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PRESSURE AND VOLTAGETransducer

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Advanced Solutions

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< back to product type overview

Bore Hole Cell BB >

Concrete Stress Transducer BT >

Shuttering Pressure Transducer S >

Shuttering Pressure Transducer for

Earth Pressure S >

Cells for Earth Pressure E >

Earth Pressure combined with

Porewater Pressure Transducers PEP >

Cells for Earth Pressure E6 >

Pneumatic Cells Series 3 >

Cells for Porewater Pressure P4 >

Electric Stress Sensor E >

Pore Water Pressure Sensor EPKO3 >

Pressure Sensor EP3 >

Press-in Pressure Cell for Earth Pressure >

Pore Water Pressure Sensor with

ring fi lter EP4 >

Pore Water Pressure Sensor EPVW3 >

Pore Water Pressure Sensor PVM >

Waterpressure Cell EP1,2 >

Electric Stress Transducer EESK >

Version: 20.01.2003 / IG / RA / P003.00.00.00.00.001R01_engl.doc

GLÖTZL Baumeßtechnik BORE HOLE CELL

Type: BB . . . Art. No.: 03. . .

Figure 1 shows the assemblage of three cells which absorb the components. This enables the observation of the two-dimensional portion of the main stress.

The bore hole cells or stress monitoring systems (SMS) are a suggestion for determination of the principle component of stress in size and direction.

The stress is a tensorial size which is determined by 9 resp. 6 directed sizes.

The installation of such a measuring equipment is an essential problem. Normally, this equipment is installed in a bore hole.

The deepening of the boring causes a stress transposition and thus a disturbance which seems to be unavoidable.

To solve this problem, it is our suggestion to install the measuring equipment in the bore hole and then to grout the annulus with injection material.

The basis for this idea is the

effect of hard inclusion.

This means that the injection material should have a higher stiffness as the surrounding rock.

The thus effected stress concentration is acting contrary to the stress transposition by the deepening of the boring.

P003SB01.vsd

Guide skidsØ 135 mm

Valves

Ring injectionline (RI)

Pad size100x200 mm

Referencedepth

Bore holeØ 146 mm

90°

0°

45°2

3

1

Load ranges

0 - 5 bar0 - 10 bar0 - 20 bar0 - 50 bar0 - 200 bar0 - 400 bar

Oilope-ration

Air ope-ration

Figure 1


This variant – shown in fugure 2 – shows a SMS with 4 cells, where the 4th cell is only acting as indicator in the axis direction of the bore hole. 6 cells are necessary for determination of the main stress. 3 cells are inclined in a level of 0°, 120°, 240° e.g. The remaining cells are turned and inclined to record the third dimension. The evaluation and visualization are plotted resp. are shown as algorythms. Installation of the cells - fixed in a tube – is done by means of direction rods to record the angle orientation. If required, a compass equipment resp. an inclination measuring unit can or should be used.

Concreting in of Bore Hole Cell in Tube Form:

P003SB04.vsd

Retightening of bore hole cell by means of a retightening tube

P003SB08.vsd

P P P

V V V

P003SB06.vsd

P003SB02.vsd

V 0° H 0°V 90°V 45°

Ref

eren

cede

pth

240 200200

35

25

50 50 50

1234

2526510010020025

1465 mm

E-modulus concrete > E-modulus rock

Diameter 110 mm Length 900 mm

Figure 2


After injection and the complete bedding of the stress cells, stress arises. This stress structure is time-dependent and has an asymptotical course. In cooperation with the company BGR, a system has been developed to initiate this procedure resp. to speed it up. Ring injection lines around the rim of the transducer pads and also crossing the areas of the pads creates the space to pressurize the cells.

Installation in Bore Hole

- By means of guide rods for directionally oriented installation - Injection of bore hole cell by means of concrete with expanding

addition - Measurement of horizontal main stress in size and direction Stress ellipse Main stress

P003SB10.vsd

Injectionline

Guiderods

Rock

Bore holecell

Injectionsmaterial

σ 3

σ 2

σ 1

σ 2

σ 1-

-

σ 3-

Cell I

Cell II

(σ 3) = ( σ 3)-

Cell III

P003SB09.vsd

nomin.

P

(Load)

(measured stress)σ

III

III

P003SB09.vsd

Calibration in pressure vessel

P003SB03.vsd

Load

Pump

Pressure vessel

Bore hole cell


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected]

© Glötzl Gesellschaft für Baumeßtechnik mbH

Examples:

Type BB 15/25 KF50 6V/H Type BB 10/20 QF 50/3 V/H

6 bore hole cells vertical at 0°, 45° and 90° 3 bore hole cells vertical at 0°, 60° and 120° at 0°, 90°, 135°, 0°, 90° and 45° 1 bore hole cell horizontal 0° for measure- 1 bore hole cell horizontal 0° for measurement ment of stress in the bore hole axis of stress in the bore hole axis

Type BB 10/20 QF 50/3 V/H

2 bore hole cells vertical at 0° and 90° 1 bore hole cell horizontal 0° for measurement of stress in bore hole axis

P003SB012.vsd

90°

0°

H 0°

1

2

3

4

Ref. depth

P003SB13.vsd

1

2

3

4

H 0°

0°

60°

120°

Ø 100

P003SB011.vsd

Ref. depth7

6

5

4

3

2

1

45°

90°

0°

135°

90°

H 0°

0°

red colour marking


GLÖTZL Baumeßtechnik CONCRETE STRESS TRANSDUCER Type: BT . .

Art.-No.: 05. . . With direct reading The concrete stress transducer, type BT, is used for observation of stress in concrete. Principally, it is applied as an indicator for observation of stress changes. For direct measurement of total stresses in concrete, cells with compensation valves should be used which have an unchangeable filling volume of pressure pad.

Function The surrounding concrete is charging the pressure pad. The filling fluid in the pressure pad is compressed and the pressure is indicated by the installed manometer. The quantity of filling fluid of the pressure pad and manometer is very small in order to keep temperature influences as small as possible. Influences caused by installation temperature are compensated by means of the repressurizing tube. Furthermore, an eventually arising shrinking gap in the concrete is overcome by this repressurizing tube. By expansion of the Bourdon tube in the manometer and the thus arising loss in volume it is necessary to prestress the cell by the repressurizing tube.

Type BT 10/20 Q 100 N 20

Concrete stress transducer with pressure pad 100 x 200 mm, repressurizing tube, measuring range 0 – 100 bars and manometer protection cap

For fixing at the reinforcement, the pressure pad is equipped with mounting lugs at its ends.

Pressure pad dimensions: 100 x 200, 150 x 250 und 200 x 300 mm Models BT for concrete stress and FT for joint pressure Load ranges: 0 – 10 / 25 / 40 / 60 / 100 / 160 / 250 und 400 bars Manometer: Ø 63 mm, cl. 1.6 of rust- and acid-proof material Pressure pad: Material sheet steel 1203

Concrete stress transducer installed in shotcrete in a tunnel Visible: Manometer for stress indication and repressurizing tube During construction works and installation time the manometers are protected by a plastic protecting cap.




Installation The concrete stress transducers with direct reading are installed in the same way as the cells with valve, system Glötzl. Type FT for joint pressure - Fixing of pressure pad by lugs,

at the rock with nails and plugs - Intermediate layer of mortar for complete

contact - Fix connection tube of manometer and

repressurizing tube at the reinforcement. Type BT for concrete stress - Fixing of pressure pad at the reinforcement

by lugs - Fix connection tube of manometer and

repressurizing tube at the reinforcement. - Prestress all parts firmly with binding wire so

that no vibration of cell is given during injection.

- During injection of the cell please have attention that the injection jet does not directly meet the cell. Slowly inject the cells till the concrete is filled up.

- Approx. 3 days after installation, the cell is restressed. The procedure can be abandoned if the pressure indication is largely increasing. During squeezing of repressurizing tube, filling fluid is pressed into the pressure pad which results in a complete contact between concrete and cell.

Repressurizing curve of a cell Models and type keys

BT 10/20 Q 100 N20

Length of repressurizing tube, calculated from middle of pressure pad till concrete rim, approx. 20 cm

Load range of cell, e.g. 100 bars Ranges: 0 – 10, 25, 40, 60, 100, 160, 250 and 400 bars

Fluid: Q = mercury, K = oil

Pressure pad dimensions: 10/20 e.g. 100 x 200 mm, 15/25 and 20/30

BT = Model for concrete stress FT = Model for joint pressure or rock pressure

Squeezes

1 2 3 4 5 [cm]0

2

4

6

[bar]

P005BG01-Bild4.vsd


GLÖTZL Baumeßtechnik

38210

5511

0

Ø 6

0

Dimensions (mm)

10

Example: Installation dimensions and arrangement for cell S10/20Pad size 10 x 20 cm

SHUTTERING PRESSURE TRANSDUCER Type: S . . . Art. No.: 07. . .

Shuttering pressure transducers are stress cells with hydraulic compensation valve for measurement of compressive stress on an area, e.g. concrete supporting wall, control ways, tubbings, sheet piling or shuttering elements. For a surface-equal installation, a cavity is planned in the surface of the construction element to be controlled in which the cell is located by means of plastic. The valve of the cell and the connections of the measuring tubings are placed at the back. For leading of the tubings and location of the valve a boring has to be done in the construction element, dia 60 – 70 mm, according to the following drawings.

Type S 10/20 installation example:

Return line

Injection line Pressure line

Aeration line

Con-crete

Shuttering pressure cellS10/20 Plastic Elribon

foamed




Dimensions of cells and openings:

Dimensions (all in mm) S 10/20 S 15/25 S 20/30

A Length of cell A‘ Length of cavity

202 210

256 270

306 320

B Width of cell B‘ Width of cavity

102 110

156 170

206 220

C Longitudinal axis size of boring D Transverse axis size of boring

38 55

43 85

65 110

E Thickness of cell E‘ Depth of cavity

5 10

7 12

10 15

G Diameter of boring 60 60 70

CA

DBBoring for feed-

through of valve

A'

B'

Shuttering openingCavity

Pressure pad

Valve < Ø 50 mm

Return line connectionSW 14

Pressure line connectionSW 17

35

E

220

G

E'

Version: 27.07.2007 / IG / SP / P007.05.00.00.00.001R02_engl.doc


SHUTTERING PRESSURE TRANSDUCER for EARTH PRESSURE and combined with POREWATER PRESSURE hydraulic/electric

Type: S . . . Art. No.: 07. 05

The shuttering pressure transducer for earth pressure and also combined for porewater pressure is available

with flat and curved pressure pad with radii adjusted to the respective construction. Two pressure pad sizes

are available which can be equipped with the approved hydraulic/pneumatic compensation valve or with

electric pressure transducers.

Curved model combined

Iron

Pressure psdfor earth pressure

Porewater pressure

Special equipment with jacking cylinder forinstallation in reinforcements, e.g. piles ordiaphragm walls, control either hydraulic orpneumatic

P016SB01.vsd

Jacking cylinderspecial model

The figure only shows one execution possibility. For the respective application, specially constructed instruments are available. For installation of pressure pads in piles or also in sheet-pile walls, we generally recommend cells with compensation valve on account of its approved robust construction.


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com

Flat model – earth pressure

Installation example sheet-pile wall

Combined earth pressure – porewater pressure

Cell model

Protection sheet forvalve and tubing

Sheet-pilewall

Plastic insert

Pressurepad

Welded joint

Abutment15 - 20 mm

Valve

P016SB02.vsd

100 or150 mm50 5

Ø45mm

200

or25

0 m

m70

mm

ValveEarthpressure

ValvePore-waterpressure

Porewater pressureFor model without porewaterpressure this constructionpart is not necessary.

Pressurepad

P016SB03.vsd

Models: S(SP) 10/20 R...(P) K5 VHD S = Pressure pad Shuttering pres. dimensions R = Radius Load Meas. type SP = 100/200 mm in [mm] 2/5/10 Combined with 150/200 mm F = flat 20 und porewater pres. P = Jacking cylinder 50 bar Press. recording: Measurement type: Hydraulic/pneumatic compensation valve VHD Pressure transformer piezoelectric without electronics DK Pressure transformer piezoelectric with amplifier 4 - 20 mA DKV Pressure transformer with vibrating wire transducer VW Material: F (E) K(S) F = Steel St37 Combined model E = Stainless steel K = Ceramic filter S = Sintered metal filter

Order example: SP 10/20 R500 P K5 VHD E S Radius 500 mm Sintered metal filter Pressure pad size 100*200 mm Stainless steel Shuttering pressure transducer Compensation valve combined with Load 0 - 5 bars porewater pressure Jacking cylinder

Technical data – models

VHD DK DKV VW

Meas. accuracy f.s. Temperature error f.s. Application range Temperature sensor Supply Output signal

+/- 0.2 % < 0.05 %/°C

-30 up to +70 °C no

pneumatic [bar]

+/- 0.5 % < 0.1 %/°C

-20 up to +60 °C no

4 mA / 10 V DC 0 - max. 1000 mV

+/- 0.5 % < 0.1 %/°C

-5 up to +60 °C AD 590

10 – 30 V DC, 2-conductor 4 - 20 mA

+/- 0.5 % < 0.1 %/°C

-20 up to +60 °C Thermistor

VW, 4-conductor f²

· [email protected] © Glötzl Gesellschaft für Baumeßtechnik mbH


GLÖTZL BaumeßtechnikCELLS for EARTH PRESSURE

Cells for measurement of earth pressure, type E 20/30 KF 50A with corrosion protective coating

Pressure pad dimensions:

12 17 7/14 10/20 15/25 20/30 40/40 120 170 70x140 100x200 150x250 200x300 400x400 (mm)

Load capacity:

KF 20 = up to 20 bars for air operation, control accuracy 0.02 bar

KF 50 = up to 50 bars for oil operation, control accuracy 0.05 bar

KM 200= up to 200 bars for oil operation, control accuracy 0.20 bar

All models are fourfold overpressure protected at dynamic load.

Figures:

at pressure pad dimensions Ø12, Ø17, 7/14, 10/20, 15/25

at pressure pad dimensions 20/30 and greater

B

VisioDocument

A C D E F

B CA

Type: E . . .Art. No.: 15. . .


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany

+49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected]


Subject to technical alternations

For pressure pad dimensions 40/40, only "A" is available.

Type B 40/40 model A

Cell for measurement of earth pressure type E 10/20 KF 50A (model A)

Accessories / special models:

Z4 4 mounting lugs at the edges of the pressure pad

KR Plastic around the rim of the pressure pad to avoid forced stresses

KE Plastic over one side opf the pressure pad and around the rim for one-sided embedding in concrete

VA Cells with the dimensions 7/14, 10/20, 15/25 und 20/30 which are used for installation in agressivemedia, can be delivered as special models of rust- and acid-resistant steel. Designation „VA“

Type code / example for order:

15.03.04.04 = E 10/20 KF20 Z4

Accessories: with 4 mounting lugs

Model designation / measuring range: KF 20

Pad dimensions: 10/20

Product group

Load range up to max. 200 bars, X/Y pressure pad dimensions in cm, pressure pad with oilfilling

15.01 Type E X/Y KM 200, up to 200 bars, control accuracy ± 0.20 bar

.02 Type E X/Y KF 50, up to 50 bars, control accuracy ± 0.05 bar



All models are fourfold overpressure protected at dynamic load.

15.01 – 15.04 .01 .02 .03 .04 .05 .06 .07

Pad dimensions cm 12 17 7/14 10/20 15/25 20/30 40/40

15.XX.YY. .01 .02 .03 .04 .05 .06 .07

Access. KE VA KEVA Z4 KE Z4 VA Z4 KE VAZ 4

A

Zeichnung4

Stand: 22.08.2006 / RA / P016.00.00.00.00.001R02_engl.doc

GLÖTZL Baumeßtechnik PRESS-IN CELL for EARTH PRESSURE and combined with POREWATER PRESSURE

Type: PE . . . Art. No.: 16. . .

With the earth pressure cell to press in, also in com-bination with a water or porewater pressure cell, it is possible to carry out subsequent measurements at or in constructions or in possibly undisturbed under-ground. The robust model enables an application of pressing powers of up to 2 tons. The cells are available in two pressure pad dimensions, material stainless steel and with load ranges of up to 50 bars.

Some application fields: • Subsequent installation in or at constructions • Investigation and control of landfills • Installation behind supporting walls, e.g. port in-

stallations • Earth pressure and porewater pressure in dams • Pressing into soft, binding soils for control of con-

solidation at backfills • Horizontal and vertical earth pressure measure-

ments in connection with porewater pressure around tunnels

Operating principle: The pressure pad is of a very flat and spade-formed construction and only contains a small oil filling which is effecting at the diaphragm of the Glötzl compensation valve. The total earth pressure is thus transferred propor-tionally as hydraulic pressure and is measured pneumatically and in special cases also hydrauli-cally at the compensation valve. This combination of both measuring types has been constructed to enable a measurement of total stress and porewater pressure under the same installation conditions. The cells have the following special advantages: • Insensitive up to 300% overpressure during in-

jection • Extremely high zero point stability • No range drifting possible • Robust, approved and reliable system • Measuring device, function controllable • Absolutely insensitive against overstresses

Installation in borings: Normally, a boring is done till approx. 0.5 m before the installa-tion point of the cell. From this position, the cell is injected into the surrounding material by means of rods. In soft soils, also an injection is possible without rough-boring. Injection procedure is done with rods. For this, a thread G 1 ½“ or optionally a connection pivot with diameter 45 mm is fitted at the cell. After installation, the borehole is backfilled and sealed according to the respective requirements.

Stand: 22.08.2006 / RA / P016.00.00.00.00.001R02_engl.doc




1

Construction of the cell

Pressure line Earth pressure cell

Pressure line Porewater pressure cell Common return line

Connection thread 1 1/2'' or connector ø 45 mm Filling srew porewater pressure cell

Boring for pulling rope Filter in sintered metal or ceramic

Pressure pad 70 x 140 x 5 mm or 100 x 200 x 6 mm

Installation at and in tunnels

After excavation of tunnel, the cells are injected into the surrounding material from borings. Installation from surface before ex-cavation of tunnel. Recording of stress changes during excavation.

Instrumentation of dams

Subsequent installation for control of stresses and porewater pressure in packing core and supporting material.

Supporting walls, security of excavation Installation behind supporting walls and excavation securities for re-cording of the really existing earth pressure.

Models: Art. No.: 16.01 PE = Earth pressure cell 16.02 PE/P= Combined model earth and porewater pressure cell 16.xx.01 KF 50, load limit 50 bars control accuracy ± 0.05 bar 16.xx.02 KF 20, load limit 20 bars control accuracy ± 0.02 bars 16.xx.03 KF 10, load limit 10 bars control accuracy ± 0.02 bar 16.xx.04 KF 5, load limit 5 bars control accuracy ± 0.01 bar 16.xx.xx.01 70/140, press. pad size in mm 16.xx.xx.11 100/200, press. pad size in mm 16.xx.xx.xx.1 R = rods connection G 1 ½" 16.xx.xx.xx.2 Z = thread connection Ø 45mm Example: 16.02.04.01 = PE/P 7/14 KF5 Z S sintered metal filter thread connection pad size 7/14, model sintered metal filter type KF5, meas. range up to 5 bars model PE/P

Filling of pressure filter of porewater cell Remove filling screw, screw in water bottle and press the water in. After pressing-in procedure, close again the filling connection with the screw.

Accessories: Article number resp. article group see price pages and separate description 30.10.05 Triple line of Polyamid-11, semi-rigid,

consisting of 2 pressure lines Ø 6/3 mm transparent, 1 return line Ø 6/3 mm black, load limit 75 bars for pneumatic operation

31.01 Connection boxes 31.10 Change-over connection boxes 32 Change-over groups 35 and 36 Manual measuring devices 38 Assembly material 50 Automatic measuring devices and

remote control

VisioDocument

3

4


GLÖTZL Baumeßtechnik CELLS for EARTH PRESSURE load limit 20 bars

Arrangement of valves

Model C Model A

Figure: Type E6 KF20 Model A

Tubing Ø 4 mm

Filler gap

Pressure pad

Connection tube Ø 6 mm

Cell valve Ø 30 mm

Return line connection SW 12

Prefilter

SW 12

Pressure connection SW 12

Tubing connection Ø 4 mmfor return line

SW 9

Pressure pad dimensions

Type E6 Ø 60 mmType E7 Ø 70 mmType E8 Ø 80 mmType E9 Ø 90 mm

P017BG01.vsd

Type E 6 – (9)Art.-Nr.: 17.01




Cells for FORMWORK PRESSURE,

load limit 20 bars, for air and oil operation

S 6 Ø 61 mmS 9 Ø 91 mm

Pressure pad

Valve Ø 32 mmwith plastic coating

Return line SW 10 formeas. line tubing Ø 4 mm

P017BG01.vsd

Pressure line SW 12 formeas. line tubing Ø 4 mm

~ 15

6m

m

30

3

Figure .: Type S10 KF20

Type S 6 – (9)Art. No.: 17.10


GLÖTZL Baumeßtechnik Pneumatic Cells Series 3

Type P3 ER 5 Press-in Pore Water Pressure Cell

P3 SF Standard Pore Water Pressure Cell

Modular principle

Valve part Filter

Sintered metal Ceramic

Small construction

High accuracy Longevity

No zero point- and range drift

Load range 0-20 bars Stainless steel model

Press-in filter

Version: 18.05.2004 / RA / P020.00.00.00.00.001R00_engl.doc



Standard settlement transducer Press-in settlement transducer S 3 – SP S 3 – SS Earth pressure cell Press-in earth pressure cell 5/10 – 10/20 cm Type EP 3 – 5/10 Standard pressure pad circular Ø 5 – 12 cm Type E 3 – 5 Standard pressure pad 5/10 – 10/20 cm Type E 3 – 5/10


GLÖTZL Baumeßtechnik CELLS for POREWATER PRESSURE

Type E: P4 . . . Art. No.: 22. . .

Function These cells are used for measurement of porewater pressures with air or oil operation up to 20 bars, water pressures up to 50 bars.

Figure.: Type P4 KF 10L

Figure: Type P4 SF 50 L AG ER 5

Configuration The porewater pressure cell is constructed of rust- and acid-proof steel with a diameter of 40 mm. Model for air operation, standard, model for oil operation can be delivered on special request. Load limit in bar = (X)

The following models are available:

KF = Ceramic filter, air entry value 10 m water column for installation in binding soils SF = Sintered metal filter for installation in sand fillings

Cell types

Type Filter Surface

22.XX.01.01 P4 KF(X)L Ceramic filter 4,5 cm²

.02 P4 SF(X)L Sintered metal filter 12 cm²

22.XX.02.01 P4 KF(X)L AG Ceramic filter and connection thread 4,5 cm²

.02 P4 SF(X)L AG Sintered metal filter and connection thread 12 cm²

22.XX.04.01 P4 SF(X)L AG ER5 Sintered metal ring filter Ø 40 mm, l = 50 mm with injection tip and connection thread M 36 x 1

60 cm²

.02 P4 KF(X)L AG ER5 Ceramic filter Ø 40 mm, l = 50 mm with injection tip and connection thread M 36 x 1

60 cm²

22.XX.06 P4 W(X))L AG ER Water pressure transducer with fleece special filter for water level measurement in sand or gravel soils

55 cm²

22.XX.07 P4 F(X)L Water pressure transducer with tube connection EO 6 S

P022BG02-Bild 1.tif

P022BG02-Bild 2.tif


Measuring ranges

22.01 (X) = -0.6/3 load range –0.6/3 bars, control accuracy ± 0.005 bar

.02 (X) = -1/5 load range -1/5 bars, control accuracy ± 0.01 bar

.03 (X) = 10 load range 0/10 bars, control accuracy ± 0.01 bar



Type code e. g. P4 KF 10L AG E R5

P4 = P4 Porewater pressure cell 40 mm diameter

KF = Ceramic filter 10L = Load range (10 bars air operation)) AG = Connection thread E = Injection tip R5 = Ring filter

Filter SF = Sintered metal filter, filter height 50 mm, diameter 40 mm

KF = Stone filter, filter height 50 mm, diameter 40 mm

Connection sleeves and accessories

Connection sleeves 22.50.01.01 Connection sleeve for porewater

pressure cell for injection Ø 40 mm, total length L = 240 mm, for model AG with female thread and connection pivot Ø 35 mm, l = 40 mm

.02 Connection sleeve for porewater pressure cell for injection Ø 40 mm, total length L = 1 m,

for standard model to attach and connection pivot Ø 35 mm, l = 40 mm

Injection rods see group 16.10

Accessories

22.60.01.01 Sintered metal filter complete for replacement, area 60 cm²

.02 Ceramic filter complete for replacement, area 60 cm²

.03 Fleece filter complete with filter body for replacement, area 55 cm²

Possible options for press-in rods

Cell type EPKE...AG ER5 and P4...AG ER5

Ø 34,8 mm

Tota

l len

gth

1000

mm

4090

1575

0

Press in rod

45°

Transducer diameter forconnection sleeve

Frictionreducer

Taper thread

Ø 55

Ø 43

Ø 38

Connection sleeve

Cell withfilter

Pressuresensing

Ø (inside) 35 mm

245

0- 0,2+

0,1- 0+

Cable holemin. Ø 18 mm

Ø (outside) 40 mm 425


Measurement with cells for porewater pressure General remarks: The following items are important for measurement of porewater pressures:

I. The measuring unit should not effect too high volume changes by measurement at the measuring location.

II. After installation of the measuring cell, the environment of the measuring location should be restored to the initial condition of compaction with the same material, if possible.

To I. The area between outer filter boundary layer and the measuring diaphragm must be filled – possibly without air – with a hydraulic pressure medium, if possible directly before installation of the cell. Another possibility is to store the thus prepared cell, completely embedded in this hydraulic pressure medium, till time of installation

a = Filter stone a

bcd

e

b = Collecting grooves

c = Connection boring

d = Pressure area over

e = Measuring diaphragm As pressure medium, stress-relieved water is normally used

Filling procedure of the pressure connection area can be done as follows:

1) 2)

11a 2

3

4

6

5° - 10°

1) Unscrew filter (in case of ceramic filter with filter

ring) by means of screwer, width approx. 3.5 mm, and remove sealing ring (1a).

2) Fill stress-relieved water (= dipol.), free of air

bubbles, by means of small plastic can (2) into somewhat deeper positioned connection boring (3), the other cell part (4) at slight sloping position, approx. 5 – 10° inclined, till no air bubbles are escaping from the higher located connection boring (6). The air must really flush through the pressure room (d).

3) After that, keep now cell housing (4)

horizontally, fill in more stress-relieved water till it is completely covered (5) and insert sealing ring (1a) again.

4) In the meantime, fill stress-relieved water into a

flat bowl (7) till a height of 2 – 4 mm which is lower than the filter ring resp. the filter plate and insert filter (1).

5) Screw on filter (1) again at constantly horizontal

position of the other cell part (4). 3) 4)

6) In such filled condition, the cell can be stored – in case that installation should not be done immediately – in a container (8) which is also filled with stress-relieved water till time of installation in the foundation soil and can thus be transported to the place of installation.

5

47


Installation of cell P 4 at the measuring point has to be carried out according to the instructions of II so that the environment of the measuring point must be restored after installation of the cell to the initial condition of compaction with possibly the same material.

For this, first a hole of minimum Ø 50 mm (till not higher than Ø 80 mm) is bored out (in case of unstable soil by means of a tube) or – if necessary – also flushed out.

7) The cell – in the meantime equipped with its pressure and return lines -is lowered into the open borehole till ground.

4

15)

After that, it is filled and compacted with possibly the same soil which has been bored or flushed out till a height of not more than 10 cm. During this procedure, an increase of pressure indication can be recognized. That means that the cell has already to be connected to the pump during installation, a measurement should be done and controlled during the complete filling procedure till the borehole is totally filled.

8

The boring tube should be drawn up immediatly after each partial filling to the same height as the filling has been increased, e.g. after marking at the compaction rod at the level of the tube upper rim when the compaction rod is lowered down to the ground shortly after the end of the boring or flushing.

6)

With layer of the foundation soil, also the filling material may change. However, the filling material should rather be somewhat more impermeable than the natural material of the borehole extraction.

In case of high impermeable soils it may be of advantage to let the boring tube – for this type of application of plastics because of its later plastical deformability – after lifting up to 20 till 40 cm, in the remaining borehole. According to the grade of permeability of the soil, the display which should be measured permanently - during the first time up to each hour - will slowly decrease to a final value if compaction should be somewhat too high. However, it will increase if the compaction was a little bit too small.

If already during filling procedure no display could be recognized, the compaction resp. the filling and eventually also the water content of the filling material is insufficient and no usable measuring result can be expected. Therefore, a reliable control of installation is absolutely necessary which only can be done by immediate measurement at the same time.




The simplest way for control is the application of a manual air quantity regulator. However, the most indicative results can be achieved by recording instruments = electrically controlled air quantity regulator and writer, eventually with a measuring automatic device.

Survey (with pressure and return line

7)

Version: 19.09.2006 / RA /IG P068.00.00.00.00.001R06_engl.docx

GLÖTZL Baumeßtechnik Electric Stress Sensor, Model with Hydraulic Pressure Pad and Pressure Sensor

Type E . . . Art. No.: 68. . .

The electric stress sensor with hydraulic pressure pad and pressure sensor is used for measurements of earth pressure, shuttering girder pressure, concrete pressure and joint pressure up to max. 600 bars. The pressure pad connected to an electric transducer is filled with a hydraulic fluid in a closed system. When loading the pressure pad, the arising hydraulic pressure is transferred to the diaphragm of the electric transducer, and converted into a stress proportional to the loading.

Models: EB Concrete stress and joint pressure sensor EE Earth pressure sensor

ES Shuttering girder pressure sensor EX Special models on client’s specification

Types: KE Pressure sensor piezoelectric, 4-conductor system Technical data: Supply constant current 1 mA Supply optional 4 mA or 10VDC Output signal 0–250 mV Overload protection (1–50 bars) 50% f.s. Linearity incl. hysteresis < 0.5% f.s. Linearity incl. hysteresis optional < 0.1% f.s. Thermal zero drift 0.025 mV/K Operating temperature range -15 up to +80 °C Storage temperature range (dry) -40 up to +100 °C Long-term drift temperature dependent (at 0 °C up to 50 °C), typ. 0.25 mV

Connections: + Supply black (1) - Supply yellow (2) + Output red (3) - Output blue (4) Screen yellow/green Resonance > 30 KHz Meas. frequency 1 KHz

KO Pressure sensor piezoelectric as above, but with installed amplifier and optional temperature sensor

Technical data: Supply 15 up to 30 V Output signal 4–20 mA 2-conductor system Overload protection 1–50 bars, 50% f.s. Linearity incl. hysteresis < 0.5% f.s. (optional 0.1% f.s.) Temperature coefficient < 0.01%/ °C f.s. Burden (Us-9V) : 20 mA Operating temperature range -15 °C up to +60 °C Storage temperature range -15 °C up to +100 °C Initialization time after switch-on 6 seconds

Optional with temperature sensor AD 590, output signal 1µA/K

VW Vibrating wire sensor, operating frequency from 2000 cps up to 3300 cps Thermistor type BR55, T25 = 3000 Ohm

Figure.: Electric earth pressure cell EEKE 10/20 K5 A pad size 10/20 cm, model A

Version: 19.09.2006 / RA / IG/P068.00.00.00.00.001R06_engl.docx

GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0· +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]


Subject to technical alterations

Pressure pad size:

12 17 7/14 10/20 15/25 20/30 40/40 ∅ 120 ∅ 170 70x140 100x200 150x250 200x300 400x400 (mm)

Filling: Q Pressure pad with mercury filling for the material surrounding the cell, E-modulus ≥ 10.000 bars K Pressure pad with oil filling for the material surrounding the cell, E-modulus ≤ 10.000 bars

Measuring ranges: 0-2 bars 0-20 bars 0-200 bars 0-5 bars 0-50 bars 0-400 bars 0-10 bars 0-100 bars 0-600 bars

Figures: for pressure pad sizes 12, 17, 7/14, 10/20, 15/25

for pressure pad sizes 20/30 and larger for pressure pad sizes 40/40

Accessories: N Repressurizing tube

Z4 4 attachment lugs at the rim of pressure pad

KF Plastic cover at one side over pressure pad for encasing with concrete

KR Plastic cover over the rim of pressure pad

Type key (example for ordering): 68.21.04.22.4 = EEKE 10/20 K5 A Z4 Accessories: 4 attachment lugs Design pressure pad - sensor Oil filling/pressure range 0-5 bars Pressure pad size 10/20 = 100x200 mm Pressure sensor, piezoelectric Electric earth pressure sensor

Registration: − Battery-operated readout units − Intermediate amplifier for remote control

− Manually operated change-over manifolds − Automatic measuring and recording devices with

data carrier resp. memory

B C

P001BG01.vsd

A A

P001BG01.vsd

B

VisioDocument

A C D E F




ELECTRIC PORE WATER PRESSURE SENSOR

Type: EPKO 3 Art. No.: 69.02

The electric pore water pressure sensor is used for measurement of pore water pressures up to max. 50 bars. As standard model, an electric pressure sensor with connection cable and amplifyer is watertight sealed in a housing with a diameter of 30 mm and a length of 260 mm. The pore water pressure is led into the pressure sensor by a filter and converted into an output signal of 4 – 20 mA proportionally to the measured value.

Figure: Pore water pressure sensor type EPKO 3S10 R5 Filter: K = Ceramic filter, air entry value 18 m water column for installation in cohesive soils S = Sintered metal filter for installation in sand fillings

Load ranges: -0.5 up to 0.5 / 1 / 2 / 5 / 10 / 20 and 50 bars

Type code: e.g. EPK 3 S 10 (R) Model see figure with ring filter Load limit 10 bars Filter (S = sint. metal filter, K = ceramic filter) Size of sensor Ø 30 mm Electric pore water pressure sensor Technical data: Supply 15 bis 30 V Output signal 4 – 20 mA Overload security 1 - 50 bar, 50 % v. E. Linearity incl. hysteresis < 0,5 % v. E. (optional 0,1 % v. E.) Temperature coefficient < 0,01 %/ °C v. E. Burden (Us-9V) : 20 mA Operating temperature range -15 °C bis +70 °C Storage temperature range - 15 °C bis 125 °C



· [email protected]

Version: 19.09.2008 / RA / IG / P069.00.00.00.00.002R03_engl.docx

GLÖTZL Baumeßtechnik ELECTRIC PORE WATER PRESSURE SENSOR

Type: EP . . 3 Art. No.: 69. . .

The electric pore water pressure sensor is used for measurement of pore water pressures up to max. 50 bars. As standard model, an electric pressure sensor with connection cable is watertightly sealed in a housing, diameter 30 mm, length 260 mm. The pore water pressure is led into the pressure sensor by a filter, and converted into an output signal of mV (type EPKE) or mA (type EPKO) proportionally to the measured value. Figure: Pore water pressure sensor type EPKE 3 S1 F

Models: KE Pressure sensor piezoelectric, 4-conductor system Technical data: Supply constant current 1 mA Supply optional 4 mA or 10VDC Output signal 0–250 mV Overload protection (1–50 bars) 50% f.s. Linearity incl. hysteresis < 0.5% f.s. Linearity incl. hysteresis optional < 0.1% f.s. Thermal zero drift 0.025 mV/K Operating temperature range +5 up to +80 °C Storage temperature range (dry) -40 up to +100 °C Long-term drift temperature dependent (at 0 °C up to 50 °C), typ. 0.25 mV

Connections: + Supply black (1) - Supply yellow (2) + Output red (3) - Output blue (4) Screen yellow/green Resonance > 30 KHz Meas. frequency 1 KHz

KO Pressure sensor piezoelectric as above, but with installed amplifier and optional temperature sensor

Technical data: Supply 15 up to 30 V Output signal 4–20 mA 2-conductor system Overload protection 1–50 bars, 50% f.s. Linearity incl. hysteresis < 0.5% f.s. (optional 0.1% f.s.) Temperature coefficient < 0.01%/ °C f.s. Burden (Us-9V) : 20 mA Operating temperature range +5 °C up to +60 °C Storage temperature range -15 °C up to +100 °C Initialization time after switch-on 6 seconds


Version: 19.09.2008 / RA / IG / P069.00.00.00.00.002R03_engl.docx




Filter: K = Ceramic filter, air inlet value 18 m water column for installation in cohesive soils S = Sintered metal filter for installation in sand backfills or ground-water levels

Measuring range: - 0.5 up to 0.5 / 1 / 2 / 5 / 10 / 20 and 50 bars

Type key (example for ordering): e.g. EPKE 3 S 10 F Model F Flat filter R5 Ring cylinder filter, Ø 30x50 mm EOS6 Connection with thread EOS6 ½“ Connection with ½“ thread

Measuring range -0.5 up to 0.5/1/2/5/10/20/50 bars

Filter (S = sintered metal filter, K = ceramic filter)

Dimension of cell Ø 30 mm

Type EPKE piezoelectric pore water pressure sensor, standard EPKO with amplifier output 4–20 mA

Pore water pressure sensor, type EPKE 3 S1 R5

Pore water pressure sensor, type EPKE 3 S1 EOS6

Pore water pressure sensor, type EPKE 3 S1 ½“

Version: 18.09.2008/SP/JH/P068.60.00.00.00.001R00_engl.docx

GLÖTZL Baumeßtechnik PRESS-IN PRESSURE CELL for EARTH PRESSURE, combined with POREWATER PRESSURE Type EPE, EPE/P

Art. No.: 68.60/68.70 With the earth pressure cell to press in, also in combination with a water or porewater pressure cell for effective stress, it is possible to carry out subsequent measurements at or in constructions or in possibly undisturbed underground. The robust model enables an application of pressing powers of up to 2 tons. The cells are available in two pressure pad dimensions, material stainless steel and with load ranges of up to 50 bars. When loading the pressure pad, the arising hydraulic pressure is transferred to the diaphragm

of the electric transducer, and converted into a stress proportional to the loading.

Some application fields: • Subsequent installation in or at constructions • Investigation and control of landfills • Installation behind supporting walls, e.g. port

installations • Earth pressure and porewater pressure in dams • Pressing into soft, binding soils for control of

consolidation at backfills

Models: EPE Press-In Earth pressure cell EPE/P Press-In Earth pressure cell combined with porewater pressure

Types: KE Pressure sensor piezoelectric, 4-conductor system Technical data: Supply constant current 1 mA Supply optional 4 mA or 10VDC Output signal 0 – 250 mV Overload protection (1–50 bars) 50% f.s. Linearity incl. hysteresis < 0.5% f.s. Linearity incl. hysteresis optional < 0.1% f.s. Thermal zero drift 0.025 mV/K

Operating temperature range +5 up to +80 °C Storage temperature range (dry) -40 up to +100 °C Long-term drift temperature dependent (at 0 °C up to 50 °C), typ. 0.25 mV Resonance > 30 KHz Meas. frequency 1 KHz

KO Pressure sensor piezoelectric as above, but with installed amplifier and optional temperature sensor Technical data: Supply 15 up to 30 V Output signal 4 – 20 mA, 2-conductor system Overload protection 1 – 50 bars, 50% f.s. Linearity incl. hysteresis < 0.5% f.s. (optional 0.1% f.s.) Temperature coefficient < 0.01%/ °C f.s. Burden (Us-9V) : 20 mA Operating temperature range -15 up to +70 °C Storage temperature range -15 up to +125 °C Initialization time after switch-on 6 seconds


VW Vibrating wire sensor, operating frequency from 2000 cps up to 3300 cps Thermistor type BR55, T25 = 3000 Ohm

Figure.: Press-In earth pressure cell combined with porewater pressure, EPE/P KE 10/20 K5, pad size 10/20 cm

Version: 18.09.2008/SP/JH/P068.60.00.00.00.001R00_engl.docx

GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0· +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]



Installation in borings Normally, a boring is done till approx. 0.5 m before the installation point of the cell. From this position, the cell is injected into the surrounding material by means of rods. In soft soils, also an injection is possible without rough-boring. Injection procedure is done with rods. For this, a thread G 1 ½“ or optionally a connection pivot with diameter 45 mm is fitted at the cell. After installation, the borehole is backfilled and sealed according to the respective requirements.

Filling of pressure filter of porewater cell Remove filling screw, screw in water bottle and press the water in. After pressing-in procedure, close again the filling connection with the screw.

Pressure pad size: 70 x 140 mm, 100 x 200 mm, other sizes available on request 720 mm 780 mm total length

Filling: K Pressure pad with oil filling for the material surrounding the cell, E-modulus ≤ 10.000 bars

Measuring ranges: 1 bars = 100 kPa

Pressure sensor piezoelectric (KE/KO): 0 – 2, 0 – 5, 0 – 10, 0 – 50 bars Vibrating wire sensor (VW): 1.7, 3.5, 7, 10, 20, 50 bars

Connection R = rods connection G 1 ½“ Z = thread connection Ø 45 mm

Type key (example for ordering): EPE/P VW 10/20 K5 Z Thread connection G 1 ½” (Z) Oil filling, pressure range 0 – 5 bars Pressure pad size, 10/20 (100 x 200 mm) or 7/14 (70 x 140 mm) Types: Vibrating wire sensor (VW) Model (EPE/P)

Registration: − Battery-operated readout units − Intermediate amplifier for remote control

− Manually operated change-over manifolds − Automatic measuring and recording devices with

data carrier resp. memory

Version: 19.09.2008 / RA /IG/ P069.00.00.00.00.001R03_engl.docx

GLÖTZL Baumeßtechnik ELECTRIC PORE WATER PRESSURE SENSOR

Type: EP . . 4 Art. No.: 69. . .

The electric pore water pressure sensor is used for measurement of pore water pressures up to max. 50 bars. As standard model, an electric pressure sensor with connection cable is watertightly sealed in a housing of stainless steel, diameter 40 mm, length 260 mm. The pore water pressure is led into the pressure sensor by a filter, and converted into an output signal mV (type EPKE) resp. mA (type EPKO) proportionally to the measured value. For injection, the sensor model AG R5 is equipped with a thread M36x1,5, on which an injection bushing can be screwed for rods connec-tion. Figure: Pore water pressure sensor, type EPKE 4 S1 AG R5 (E)

Models: KE Pressure sensor piezoelectric, 4-conductor system Technical data: Supply constant current 1 mA Supply optional 4 mA or 10VDC Output signal 0–250 mV Overload protection (1–50 bars) 50% f.s. Linearity incl. hysteresis < 0.5% f.s. Linearity incl. hyst., optional < 0.1% f.s. Thermal zero drift 0.025 mV/K Operating temperature range +5 up to +80 °C Storage temp. range (dry) -40 up to +100 °C Long-term drift, temperature-dependent at 0 °C up to 50 °C), typ. 0.25 mV

Connections: + supply black (1) - supply yellow (2) + output red (3) - output blue (4) Screen yellow/green Resonance > 30 KHz Meas. frequency 1 KHz

KO Pressure sensor piezoelectric as before, but with installed amplifier and optional temperature sensor

Technical data: Supply 15 up to 30 V Output signal 4–20 mA 2-conductor system Overload protection 1–50 bars, 50% f.s. Linearity incl. hysteresis < 0.5% f.s. (optional 0.1% f.s.) Temperature coefficient < 0.01%/ °C f.s. Burden (Us-9V) : 20 mA Operating temperature range +5 °C up to +60 °C Storage temperature range -15 °C up to +100 °C Initialization time after switch-on 6 seconds


Version: 19.09.2008 / RA / IG/P069.00.00.00.00.001R03_engl.docx




Filter: K = Ceramic filter, air inlet value 18 m water column for installation in cohesive soils S = Sintered metal filter for installation in sand backfills or ground-water levels

Measuring range: -0.5 up to 0.5 / 1 / 2 / 5 / 10 / 20 and 50 bars

Type key (example for ordering): e.g. EPKE 4 S 10 AG R5 E Model

R5 only with ring cylinder filter, Ø 40x50 mm AG R5 with ring cylinder filter Ø 40x50 mm and

threaded connection L5 Fleece hole filter (in case of dryness of cell) E Additional injection bushing

Measuring range -0.5 up to 0.5/1/2/5/10/20/50 bars

Filter (S = sintered metal filter, K = ceramic filter)

Dimensions of cell Ø 40 mm

Type EPKE piezoelectric pore water pressure sensor, standard EPKO with amplifier output 4–20 mA

Model L5 Fleece hole filter Ø 40x50 mm (for representation purposes fleece un-covered)

Connection M36x1.5 for cell

Hollow Ø 35x40 mmfor injection rods

Pore water pressure sensor, type EPKE 4 S1 R5

Inject. bushing Ø 40x240 mm


GLÖTZL Baumeßtechnik TRANSDUCERS FOR PORE WATER PRESSURE, WATER PRESSURE AND PRESSURE. . . . Vibrating Wire Technique

Type EPVW 3 . . EPVW 4 . .

Art. No.: 69.03...

The electric pressure transducer with vibrating wire technique is used for measurement of pore water pressures and water- or liquid pressure up to max. 600 bars. These transducers are suitable for measurements of pore water pressures in dams, embankments, water level in borings and wells – only to mention some of the possible application fields – and for direct measurement of liquid pressures. The sensor consists of a housing in different models and a sensor element.This transducer is connected to a vibrating wire the pressure-sensitive diaphragm of which is getting a bending at load by the pressure to be measured and thus is discharging the prestressed vibrating wire. The here arising frequency signals of the vibrating wire which have to be measured are proportional to the applied pressure. The frequency signal is transmitted by a cable to the readout units, either portable model or automatically operating measuring devices.

Figure: Pore water pressure transducer with front diaphragm

Advantages of vibrating wire measuring system • Long-term measurement under difficult conditions • Insensitive and very robust measuring system • Long-term stability with high resolution • Proved and successfully applied system • No influence by longer cable lengths • Closed system Available models A series of modified transducers can be supplied. The described standard sensor is a very small-sized one and therefore can also be used without problems in stand-pipes, fillings, embankments and borings. Further models are transducers for pressing into the underground, combined pore water and earth pressure cells as well as cells for direct measurement of pressures with process connections. Configuration of the transducer The sensor installed in the cell corresponds to the state-of-art in the field of vibrating wire technique. All component parts are machined of stainless steel with the classification 1.4571. The inner part of the sensor is evacuated and welded together in such a way that a closed chamber is formed for the vibrating wire element. By a drop-forging technique - patented by the manufacturer - the ends of the vibrating wire are connected to the housing. Thus, a very high stability of the wire tensioning is reached. Electromagnetic coils being placed close to the wire are used for stimulation of the wire and to convert the thus produced wire vibration into an electric output signal. By pressure change, the deflection of the diaphragm and also the vibrating frequency of the wire are influenced and alterated proportionally to the pressure to be measured.


Measuring Cable Standard cable is a 4-wire shielded cable with PE-coating. Two wires are needed for the vibrating wire sensor and two wires for an optionally available temperature sensor.

For special requirements, measuring cables are available with double coating, reinforced outer casing and high temperature cable. Here we want to remark that resistance changes in the measuring cable by temperature change, contact resistances at transition points and water entrance in the measuring cable are of no influence to the operating frequency of the sensor. This fact as well as the excellent zero point stability and long-term behaviour are the reasons why vib-rating wire sensors – compared with the conven-tional electric sensors – are used for long-term measurements also under difficult conditions and furthermore in view of the impossible recovery.

Load ranges: -0.5 up to +0.4, +0.7, +2.0, +3.5, +5.0, +7.0, +10, +20, +35, +70, +100, +200, +350 and +500 bar, Negative pressures standard up to -0.5 bar

Filter stones and special connections • Sintered metal filter of stainless steel, standard • Ceramic filter with high air entry value • Special connections according to client’s

specification or standard compression-type fitting, diameter 6 mm

Configuration of Vibrating Wire Sensor

Ordering example for EPVW 3 69.03.01.02 = EP VW 3 S 2 F

Surface filter Load range 0.2 bar Sintered metal filter Sensor type 3, diameter 30 mm Vibrating wire sensor Pore water and water pressure cell Measuring devices • Connection boxes and reversing switches • Battery-operated readout units

• Automatic measuring and registration units with

data carrier, memory and remote control


Sensor Configuration Technical Data

Technical Data Standard High Temperature

Overload security of meas. range

50 % 50 %

Linearity incl. hysteresis f.s.

±0.5 % ±0.5 %

Optional ±0.1 % ±0.1 %

Resolution f.s. ±0.02 % ±0.025 %

Thermal zero point displacement

< 0.02 % °C < 0.05 % °C

Sensor-specific indications

min. typical max. min. typical max.

Coil resistance Ohm/20 °C *

170 180 190 110 120 130

Thermistor resistance Ohm/25 °C *

3000 8200

Inductivity mH * 10 13 14 8 10 14

Capacity nF * 200 300 400 250 375 600

Line resistance Ohm/5-V feed

3500 4000

Temperature range °C -20 +80 -20 +180

Current supply mAss/5V

26 28 30 38 42 46

Supply, Impulse control for coil

regulation Vss

2 5 24 2 5 24

Operating frequency 2 kHz – 3.3 kHz 2 kHz – 3.3 kHz

Option Ex-protection EEx ib IIB T4 EEx ib IIB BTI

* For Ex-versions the line lengths must also be considered.

Connection values for Zener-barriers:

Vibrating wire sensor

Thermistor

RL min. Ohm 240 1500

UZ max. Volt 24 17

IK max. mA 100 11,33

CA min. nF 620 100

LA min. mH 15 2

Conn. allocation: Vibrating wire sensor

Thermistor

Cable 4 x 0.5 mm² yellow/black red/blue

Cable PE4 x 0.5 mm²

Shrinking tube for cable sealing

Sealing screw for cable

O-ring seal. packet

Cable sealing body

Sensor housing mat. 1.4571

Conterbore for hold.part

Plastic seal.of housing

Stimulat. coil

Vibratating wiresensor

Sensor fixation

Filter body

Filter

Scale: ~1:1


Data Collection Devices:

Portable readout unit without memory, for battery operation, type SMC 2.02

Hand operated change-over manifold for 6 measu-ring points with installed air pressure sensor Housing of polyester for wall or pole fixing IP 66, type AKVW 6/LS

Multimeter with data memory and measuring point allocation, type VMG14.1; see detailed single description

Automatic measuring device, type MFM in standard- or Exx-protection version





GLÖTZL Baumeßtechnik PORE WATER PRESSURE, WATER and PRESSURE CELL . . . . Vibrating Wire Technique Type PVM 3 . . PVM 4 . .

Art. No.: 69.04… The electric pressure cell with vibrating wire technique is used for measurement of pore water pressures and water pressure up to max. 600 bars. These cells are used in dams or embankments, also to measure water level in boreholes and for the direct measurement of liquid pressure in boreholes and wells. As housing we have different models. The sensor consists of a pressure sensitive diaphragm and a wire. This diaphragm is loaded by pressure and consequently the diaphragm is deflected. This results in a discharge of the strenghtened wire and is leading to a change of frequency. This frequency signal is transmitted by a cable to a portable readout unit or an automatic data logger system.

Figure: Porewater pressure cell with front filter stone

Advantages of vibrating wire technique • Long-term measurement under difficult conditions • Practical and very robust measuring system • Long-term stability with high resolution • Proved and successfully applied system • No influencing by longer cable lengths • Closed system Available models A series of modified cells can be supplied. The shown standard sensor is a very small-sized one and can so be used in stand-pipes and also in boreholes and embankments. Further models are cells for push-in in the underground, combined pore water pressure and earth pressure cells as well as cells for direct measurement of earth pressures only. Configuration of the cells The sensor installed in the cell corresponds to the state-of-art in the field of vibrating wire technique. All parts are machined of stainless steel, classification 1.4571. The inner part of the sensor has vacuum condition and is closed by welding. A special patented welding technique connects both ends of the wire with the housing. Therefore, a very good stability of the wire tensioning is reached. Electromagnetic coils are placed close to the wire and are stimulating the wire. By this stimulation the wire is vibrating and the frequency of this wiring vibration is changed into an electric output signal. By changing the pressure deflection of the diaphragm also the frequency of the wire is influenced and alterated proportionally to the pressure which is to be measured.


Measuring Cable Standard cable is a 4-wire shielded one with PE-coating. Two wires are used for the sensor itself and two wires for an optional available temperature sensor. For special request under rough conditions, cables are available with double coating as also for high temperature. Important is that resistance changes in the measuring cable by temperature, contact resistance values at the interfaces as also water or humidity in the cable are not influencing the output signal frequency of the sensor. This fact as well as an excellent zero point and long-term stability enable a better application of vibrating wire sensors - compared with the usual electrical sensors - in case of long-term measurements as well as measurements under rough conditions Pressure ranges -0.5 up to +0.4, +0.7, +2.0, +3.5, +5.0, +7.0, +10, +20, +35, +70, +100, +200, +350 and +500 bars, Negative pressures standard up to -0.5 bar

Filter stones or special connections • Sintered metal filter of stainless steel, standard • Ceramic filter stone with high air entry values • Special connections according to customers‘

request or also standard screws; dia. 6 mm

Configuration of the Vibrating Wire Sensor

Ordering Example 69.04.01.02 = P VM 3 S 2 F

Flat filter Pressure range 2 bars Sintered metal filter Cell type 3, diameter 30 mm Vibrating wire sensor Pore water cell and water pressure cell Measuring Units • Connection boxes and manual switches • Battery-operated readout units

• Automatic measuring and registration units with

memory and remote control


Sensor Housing

Technical Data

Technical Data Standard

Overload security 50 %

Linearity including hysteresis f.s. ± 0.5 %

Optional ± 0.1 %

Resolution f.s. ± 0.02 %

Thermical drift < 0.03 %/°C

Sensor Specifications typical

Coil resistance Ohm/20 °C 480

Thermistor resistance Ohm/25 °C 3000

Inductivity mH 42

Capacity nF 135

Cable resistance Ohm 150

Temperature range °C 0 – +70

Current supply mAss/12V 25

Supply, pulse control Vss 12

Measuring frequency 0.7 kHz – 1 kHz

Wiring: Vibrating Wire Sensor

Thermistor

Cable 4 x 0.5 mm² red/blue yellow/black

Cable PE 4 x 0.5 mm²

Shrinking tube for sealing the cable

Sealing screw for cable

O-ring

Cable sealing packet

Sensor housing Mat. 1.4571

Area for fixing rod

Plastic encapsulation of the housing

Stimulation coil

Vibrating wire sensor

Sensor fixation

Filter head

Filter

Scale: ~1:1





Readout Units

Portable readout unit without memory Type SMC 2.02

Multiple function readout unit with memory, type VMG 14.1 For further information see relevant leaflet

Automatic measuring and registration unit, type MFA 6 E, in standard or ex-protection version

Hand operated distribution unit for 6 points with additional air pressure sensor Housing of polyester for wall or rod installation IP 66 Type AKVW 6/LS





ELECTRICAL MINIATURE WATERPRESSURE CELLS

Type: EP 1,2 F Art. No.: 69.05

Miniature Pressure Cell for measuring water level in small tubings and boreholes.

- Housing of special steel - Dimensions: Ø 12 mm, length- 180 mm - Measuring cable Ø 8 mm, 4-cores x 0.25 mm The measuring cable is grouted at the cell in the requested lengths. Measuring ranges:

3.5 / 7 / 14 / 21 / 35 / 70 / 140 / 210 Overload security:100 % of the measuring range Technical Data:

Current supply: 5 V DC (Standard), short time max. 30 V Output signal: approx. 18 mV / V optional with amplifier 4 - 20 mA Temperature working range: -10 to +80 °C Resolution: +/- 0.01 m Water column (as real value) Linearity and hystereses: < +/- 0.5 % f.s. Units for the registration of the cells:

Portable readout units with accumulator and charging unit with/without data stor-age

Amplifier units for remote data transfer for lengths > 300 m

Manually operated manifolds

Automatic measuring and registration equipment

Version: 15.07.2009 / IG / SP / P068.40.00.00.00.001R03_engl.docx

GLÖTZL Baumeßtechnik ELECTRIC STRESS TRANSDUCER Front Membran Cell

Type: EESK . . Art. No.: 68.40. .

The electric stress transducer is constructed for measurement of stresses and liquid pressures up to max. 600 bars. The models are designed for bulkhead assembly, e.g. applications at tunnel drilling machines, in container construction at bulkhead plates and for pressure recording in tubes during material transport.

In a pressure pad which is connected to an electric transducer, a hydraulic fluid is existing in a closed system.

When loading the pressure pad, the corresponding hydraulic pressure is transferred to the diaphragm of the

electric transducer and transformed into a stress proportional to the load.

Types

EESK 6,2/12 Pressure pad Ø 62 mm, flange Ø 120 mm

EESK 6,2/6,2 VE Pressure pad Ø 62mm

EESK 8,6/14/6,5 VE/R Pressure pad Ø 86 mm, or /RC flange Ø 140 mm, installation depth 65 mm

EESK 8,6/14/4,5 VE/S Pressure pad Ø 86 mm, flange Ø 140 mm, installation depth 45 mm

EESK 5/9 V Pressure pad Ø 49.9 mm, flange Ø 90 mm

Available load ranges

1 / 2 / 5 / 10 / 20 /50 / 100 /200 / 400 and 600 bars

Technical data Standard 4 – 20 mA

Supply voltage 4 mA

(10 V DC) 10 – 30 V

Output signal 0 – 1000 mV 4 – 20 mA

Overload security: 1 up to 200 bar 50 % f.s. 400 and 600 bars 20 % f.s.

Linearity and hysteresis: < ± 0.5 % f.s.

Special models on client’s request

The following instruments are available for recording of the transducers:

- Battery-operated readout unit

- Intermediate amplifier for remote transfer

- Manually operated change-over manifolds

- Automatic measuring and recording devices with data carrier resp. memory

Further models on request The special measuring cable with screen is sealed at the transducer for delivery in required length, max. 300 m (without amplifying unit).

EESK 6,2/12

Pressure pad size Ø 62 mm

10

2

Ø1

20

Bulkhead plate

Transducer casing

Fastening tubing

P06

8S

B0

2.v

sd

Assembly example


Type EESK 5/9 V Pressure pad size Ø 49,9 mm

Type EESK 8,6/14/6,5 VE/R Pressure pad size Ø 86 mm

Type EESK 8,6/14/6,5 VE/RC Pressure pad size Ø 86 mm

P068SB06.vsd

88

Ø 90

60,5

19,5

6,3 4,3

Ø 49,9 + 0- 0,1

M 8

30°

30°

LK = Ø 68

33

12

65

110

Ø 86

Ø 140

P068SB07.vsd

6535

60

Shrink tube

Ø 140

Standard:

Straight plug

Alternative: Rectangular

plug

33

12

65

Ø 86

47

60

P068SB08.vsd


P068SB04.vsd

12

45

21

0 m

m

26

7 m

m

Ø 140

Ø 86

Ø 30

Tra

nsd

uc

er

ca

sin

g

R 6

0

Stress Transducer for Pipe Pressure Measurement Type EESK 5/9 V Pressure pad size Ø 49.9 mm

We can deliver specially modified or adapted models after presentation of an installation sketch.

Ø 30

Ø 28

Ø 62

26

130

mm

Tra

ns

du

ce

r h

ou

sin

g

23

3xM8 120°

P0

68S

B05

.vsd

Type EESK 5/9 V

P068SB01.vsd

Ø 30

13

0 m

m10

16

Ø 62

R 4

5

Ø 120

Tra

nsd

ucer

ho

usin

g

Type EESK 6,2/6,2 VE

Pressure pad size Ø 62 mm

Type EESK 6,2/12 Pressure pad size Ø 62 mm

Type EESK 8,6/14/4,5 VE/S Pressure pad size Ø 86 mm


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected] © Glötzl Gesellschaft für Baumeßtechnik mbH

Earth Pressure Cells for Model Tests Type EESK 5/7,5/1,2 K... Pressure pad size Ø 75 mm

Available load ranges:

Absolute transducer: 1 / 2 / 5 / 10 / 20 and 50 bars

Air pressure compens. transducer: 1 / 2 / 5 / 10 and 20 bars

Technical data:

Supply voltage: (10 V DC) 4 mA Output signal: 0 – 1000 mV

Overload security: 50 % f.s. Linearity and hysteresis: < ± 0.5 % f.s.

Pore Water Pressure Cell for Model Tests Type EPK 4/7/1,5 K... Sint. metal filter Ø 40 mm

Available load ranges:

Absolute transducer: 1 / 2 / 5 / 10 / 20 and 50 bars

Air pressure compens. transducer: 1 / 2 / 5 / 10 and 20 bars

Technical data:

Supply voltage: (10 V DC) 4 mA Output signal: 0 – 1000 mV

Overload security: 50 % f.s. Linearity and hysteresis: < ± 0.5 % f.s.

Ø 55

Ø 75

13

P068SB09.vsd

Advanced Solutions

FORCE AND ANCHORING FORCETransducer F

OR

CE

AN

D

AN

CH

OR

ING

FO

RC

E


Anchor Load Cell TK >

Anchor Load Cell e KN >

Anchor Load Cell KN >

Anchor Load Cell KK >

Load Cell KLN >

Load Cell KLN e >

Load Cell KLN KE >

Load Cell KKLN >

Load Cell for Pile Instrumentation KLP >



ANCHOR LOAD CELL

Type: TK . . . Art. No.: 40. . .

The Glötzl anchor load cell consists of a piston pad of two rigid disk plates which are flexible by turned ring-dovetail grooves at the rims.

The pressure area of this piston pad is filled with a hydraulic fluid and has an exactly defined basic area which enables the conversion of stress into load. Technical data:

Measuring accuracy: +/-2 % Temperature error: 1.2 % at 20 °C temperature difference Manometer Ø 63 mm, material 1.4571, watertight protection cover On request with glycerin filling Weight with distribution plate 5 kgs Material of piston pad St. 52-3 The type TK... is a further development of the standard instruments type K....It has especially been developed for an application in tunnel constructions and therefore has a robust design and can easily be handled.

The lower layer of the sensor is constructed in such a way that no additional distribution plate is necessary. There are no special specifications in regard to the quality of the supporting area. The upper distribution plate is available in two models, with plane supporting area or with conical conterbore for a clamping nut.





Advantages:

- Hydraulic principle - Robust construction - Easy assembly - Insensitive against eccentric loads up to 5° - Direct measurement at calibrated manometer - Low temperature sensitivity - Small weight Dimensions:

- Overall height: 75 mm - Anchor hole: 35 mm - Diameter of piston pad: max. 140 mm - Overall height

with manometer: 220 mm - Load ranges: 0 - 160 / 250 / 400 and 600 kN

Models:

Type TK....A 35 M with direct reading manometer Type TK....A 35 E with electric pressure transformer 4 - 20 mA for remote control Type TK....A 35 VHD with hydraulic compensation valve for remote control Type code:

TK 250 A 35 M P

Distribution plate, P = plane (K = cone)

Model with manometer (E resp. VHD)

Anchor hole 35 mm

Load ranges 250 kN or 160/400/600 kN

Designation for anchor load cells for tunnel construction

Figure: Anchor load cell, type TK 250 A 35 M with distribution plates, plane and conical

Anchor opening and perhaps cone in the distribution plate can also be delivered according to client's request

140

5378

Dimensions in mm

25

220

140

5378

25


GLÖTZL Baumeßtechnik ANCHOR LOAD CELL Models DK, DKV and VW

Type: KN . . . Art. No.: 41. . .

The GLÖTZL-anchor load cell consists of a piston pad with two rigid ring disks which are flexible by turned ring-dovetail grooves at the rims. The annular gap between the pads is filled with a hydraulic fluid which is recording the pressure on the defined area. In case of the here presented hydraulic /electric models, the hydraulic pressure is converted into an electric signal by a piezoelectric pressure converter (models DK, DKV) resp. by a vibrating wire transducer (VW). Additionally, the cell can optionally be delivered with an installed temperature sensor (AD 590) resp. with a thermistor. The sensor and the corresponding electronics are laterally placed in a compact, space-saving stainless steel housing with cable connection.

Model DK: Equipment with piezoelectric pressure converter, 4-conductor system, supply 4 mA constant current resp. 10 V DC, output signal 0 up to 1000 mV max. For additional temperature sensor AD 590 (model DK / T) a 6-core cable is required.

Model DKV: Equipment with piezoelectric pressure converter, 2-conductor system, installed amplifier, supply 10 up to 30 V DC (calibration with standard = 24 V DC), output signal standardized 4 up to 20 MA for the measuring range 0 up to maximum load. For additional temperature sensor AD 590 (model DKV / T) a 4-core cable is required.

Model VW Equipment with vibrating wire transducer and thermistor, 4-conductor system. For this equipment, a special readout unit is required resp. the hand measuring device type SMC 2.02 or the multimeter, type VMG 14.1.

Figure: Anchor load cell, type KN 2000 A135 VW with distribution plate





Models DK and DKV with electric remote control

Load ranges and dimensions

Load [kN] Dimensions [mm] Weights [kgs] Type KN..DK(DKV), (VW)

nom. max. A B C D E Cell Cell + distribution pate

KN 250 A 35 DK 2,5 250 275 35 123 144 28 30 3.5 6.0 KN 500 A 50 DK 4 500 550 50 144 165 28 40 4.0 8.5 KN 750 A 75 DK 4 750 850 75 180 202 28 40 6.0 12.0 KN 1000 A 105 DK 4 1000 1100 105 219 240 28 45 6.5 16.0 KN 1400 A 105 DK 6 1400 1600 105 219 240 28 45 6.5 16.0 KN 2000 A 135 DK 6 2000 2200 135 265 288 30 65 9.0 28.0 KN 5000 A 160 DK 6 5000 5500 160 380 408 50 85 37.0 99.5

Additional distribution plate available on request

Digital readout unit for two meas. channels type FMG 01-2

- Load and temperature - Direct display of load in kN - Display temperature °C - Installed current supply with charger - Robust housing

Technical data (piezoelectric transducer)

Measuring accuracy +/- 0.5% Temperature error < 0.1% °C f.s. Application range -40 °C up to +70 °C Permissible tubing length max. 1000 m

Hand Measuring device for vibrating wire transducer type SMC 2.02

- Simple handling - Mains independet - Small weight - Illuminated display - Installed current supply

with charger - Display temperature °C Measuring range:0,5 - 3,5 kHz Resistance: 0 – 2200 Ω Inducing impulse: 60 V/1 ms Measuring error: 0,05 – 0,1 %

Readout unit type VMG 14.1

- Load - Pressure - Display temperature °C - All sensors with output signal 4 – 20 mA and 0 – 20 mA - Displacement transducer - LVDT, e.g. fissuremeter - Vibrating wire transducer (VW) - Resistive strain gauge (DMS) - Installed current supply with

charger - Robust housing

System and construction: 1. Piston pad 2. Hydraulic fluid 3. Anchor 4. Distribution plate 5. Electric pressure converter



HYDRAULIC ANCHOR LOAD CELL

Type: KN . . . Art. No.: 41. . .

Figure.: Type KN 1400 A 105 M

The Glötzl anchor load cell consists of a piston pad which is formed by two rigid ring disks which are flexible by turned ring-dovetail grooves at the rims.

The pressure area of this piston pad is filled with a hydraulic fluid and has an exactly defined basic area by which the transmission of strain into load is ensured.

Measurement of anchor load cell - Direct reading at calibrated manometer for models M, MF and ME - Hydraulic remote control with „GLÖTZL compensation valve“, model VHD - Electric remote control with piezoelectric pressure transformer and temperature sensor, models DK and

DKV - Electric remote control with vibrating wire transducer and thermistor, model VW

Advantages of Glötzl anchor load cell - Hydraulic principle - Easy assembly - Robust construction - Small temperature sensitivity - Small overall height - Insensitive against eccentric loads - Small weight - No calibration curve necessary as cell is linearly indicating

Technical data - Measuring accuracy +/-1 percent - Temperature error at 20 °C temperature difference: 1.2% of load range


Models M, MF and ME with directly reading manometer Construction: Model M Construction: Model MF

System and construction: 1. Piston pad 2. Hydraulic fluid 3. Anchor 4. Distribution plate 5. Reading manometer 6. Protection cap Technical data Anchor load cell and distribution plate of steel St. 52 Measuring accuracy: +/-1% Temperature error: 1.2% at 20 °C temperature difference Application range: -30 °C up to 60 °C

Reading direction

5 6

60

130

mm

B

3 4

ED

A

C

21

040 SB01.vsd

B

3 4 5 6

ED

A

C

115

8021

040 SB02.vsd

Reading direction

Figure: Anchor load cell placed on anchor plate

before loading the anchor

Model ME: Like model M resp. MF with manometer However, the manometer is additionally equipped with adjustable limit value swiches for minimum resp. maximum load. The limits can be adjusted and are indicated as signal (lamp) in a central when being exceeded. The anchor load cell is constructed for placing on a plane anchor plate. If this should not be possible, a further distribution plate must be used.

040 SB08.vsd

1 2 3 4 5

Delivery volume: anchor load cell and one distribution plate


Load [kN] Dimensions [mm] Weight [kg] Type KN . . M, ME, MF

nom. max. A B C D E Cell Cell +

distribution plate KN 250 A 35 M 2,5 250 300 35 123 144 28 30 3.5 6.0 KN 500 A 50 M 4 500 600 50 144 165 28 40 4.0 8.5 KN 750 A 75 M 4 750 900 75 180 202 28 40 6.0 12.0 KN 1000 A 105 M 4 1000 1200 105 219 240 28 45 6.5 16.0 KN 1400 A 105 M 6 1400 1600 105 219 240 28 45 6.5 16.0 KN 2000 A 135 M 6 2000 2400 135 265 288 30 65 9.0 28.0 KN 5000 A 160 M 6 5000 6000 160 380 408 50 85 37.0 99.5

Further load ranges on request


Model VHD, hydraulic remote control with GLÖTZL compensation valve

040 SB03.vsd

Model A Model B

140

mm

040 SB05.vsdB

ED

A

C040 SB05.vsd

B

ED

A

C

210 mm

The following devices can be used for recording of measured values of the anchor load cells with compensation valve:

- Hand pump with change-over manifold - Automatic measuring and recording device

- Electric motor-driven pump with change-over manifold


Load [kN] Dimensions [mm] Weight [kg] Type KN . . M, ME, MF


distribution plate KN 250 A35 VHD 2,5 250 280 35 123 144 28 30 3.5 6.0 KN 500 A50 VHD 4 500 580 50 144 165 28 40 4.0 8.5 KN 750 A75 VHD 4 750 850 75 180 202 28 40 6.0 12.0 KN 1000 A105 VHD 4 1000 1150 105 219 240 28 45 6.5 16.0 KN 1400 A105 VHD 4 1400 1530 105 244 266 30 45 6.5 16.0 KN 2000 A135 VHD 4 2000 2350 135 304 328 30 70 14.0 46.0 KN 5000 A160 VHD 4 5000 5550 160 446 474 50 85 54.0 145.0


Figure: Fixed anchor with anchor load cell Figure: Anchor load cell with tensioning device



Construction of anchor load cells

040 SB04.vsd

Compensation valve with load cell, model "B"

BuildingDistribution plate Clamping nut

Support for clamping nut

Anchor plate

Anchor

Distribution plate

Eventually necessary distribution plate below

040 SB04.vsd

Reading manometer, model "M"

Building

Supporting plate (anchor pl.)Clamping nut

Support for clamping nut

Anchor load cell

Anchor

Distribution plate



Figure: Anchor load cell in installation condition

Manual measuring device Automatic measuring device

Type MFM71



ANCHOR LOAD CELLS Models DK, DKV and VW

Type: KK . . . Art. No.: 42. . .

Like the type KN, the anchor load cell consists of a piston pad with two rigid ring disks which are flexible by turned ring-dovetail grooves. The upper ring disk is stiffened constructed and thus is acting as integrated distribution plate over the pressure area of the piston pad. The ring gap between the pads is filled with hydraulic fluid which is recording the pressure on the defined area.In case of the here presented hydraulic / electric models, the hydraulic pressure is converted into an electric signal by a piezoelectric pressure converter (models DK, DKV) resp. by a vibrating wire transducer (VW). Additionally, the cell can optionally be delivered with an installed temperature sensor (AD 590) resp. with a thermistor.

The sensor and the corresponding electronics are laterally placed in a compact, space-saving stainless steel housing with cable connection

Model DK:

Equipment with piezoelectric pressure converter, 4-conductor system, supply 4 mA constant current resp. 10 V DC, output signal 0 up to 1000 mV max. For additional temperature sensor AD 590 (model DK / T) a 6-core cable is required.

Model DKV:

Equipment with piezoelectric pressure converter, 2-conductor system, installed amplifier, supply 10 up to 30 V DC (calibration with standard = 24 V DC), output signal standardized 4 up to 20 mA for the measuring range 0 up to maximum load. For additional temperature sensor AD 590 (model DKV / T) a 4-core cable is required.

Model VW

Equipment with vibrating wire transducer and thermistor, 4-conductor system. For this equipment, a special readout unit is required resp. the hand measuring device type SMC 2.02 or the multimeter, type VMG 14.1.

Figure: Anchor load cell KK 1400 A105 DK



+49 (0)721 51 66 – 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected] © Glötzl Gesellschaft für Baumeßtechnik mbH


Load ranges and dimensions 3

4

D

A

042 SB02.vsd

B

C

21

E

5

Type KK..DK(DKV),(VW)

Load [kN] Dimensions [mm] Weights [kgs]


distribution plate

KK 250 A 35 DK 2,5 250 280 35 125 145 65 30 4.0 6.5

KK 500 A 50 DK 4 500 550 50 145 165 65 40 6.0 10.5

KK 750 A 75 DK 4 750 850 75 180 202 65 40 9.5 15.5

KK 1000 A 105 DK 4 1000 1100 105 220 242 65 45 13.0 22.5

KK 1400 A 105 DK 6 1400 1600 105 220 242 65 45 13.0 22.5

KK 2000 A 135 DK 6 2000 2200 135 265 288 80 60 23.0 43.0

KK 3000 A 135 DK 6 3000 3300 135 300 322 80 70 36.5 67.5

KK 5000 A 160 DK 6 5000 5500 160 380 408 90 80 66.5 125.5

Further distribution plate on request


- Load and temperature

- Direct display of load in kN

- Display temperature °C

- Installed current supply with charger

- Robust housing


Measuring accuracy +/- 0.5%

Temperature error < 0.1% °C f.s.

Application range -40 °C up to +70 °C

Permissible tubing length max. 1000 m

Hand measuring device for vibrating wire transducer type SMC 2.02

- Simple handling

- Mains independet

- Small weight

- Illuminated display



Measuring range:0,5 - 3,5 kHz

Resistance: 0 – 2200 Inducing impulse: 60 V/1 ms Measuring error: 0,05 – 0,1 %


- Load

- Pressure


- All sensors with output signal

4 – 20 mA and 0 – 20 mA

- Displacement transducer

- LVDT, e.g. fissuremeter

- Vibrating wire transducer (VW)

- Resistive strain gauge (DMS)


- Robust housing

System and construction:

1. Piston pad

2. Hydraulic fluid

3. Anchor

4. Distribution plate

5. Electric pressure converter


GLÖTZL Baumeßtechnik HYDRAULIC LOAD CELL

Type: KLN . . . Art. No: 43. . .

The Glötzl load cell consists of a piston pad with two rigid ring disks which are flexible by turned ring-dovetail grooves at the rims.

The pressure area of this piston pad is filled with a hydraulic fluid and has an exactly defined basic area. By this, a conversion of stress into load is ensured.

Measurement of load cell - Direct measurement at calibrated manometer, models M, ME and D - Hydraulic remote control with „GLÖTZL compensation valve“, model VHD - Electric remote control with piezoelectric pressure converter and temperature sensor, models DK and

DKV - Electric remote control with vibrating wire transducer and thermistor, model VW

Advantages of Glötzl anchor load cell - Hydraulic principle - Easy assembly - Robust construction - Small temperature sensitivity - Small overall height - Insensitive against eccentric loads - Small weight - Calibration curve not necessary as cell is linearly indicating

Technical data - Measuring accuracy +/-1% - Temperature error at 20 °C, temperature difference 1.2% of load range

Type: KLN 2000 M6


Models M, MF and ME with direct reading manometer Execution: Model M

BC

1 2 4

5

3

60 mm

Reading device

VisioDocument

Execution: Model MF

ED

80 m

m

Model ME: Like model M resp. MF with manometer. However, the manometer is additionally equipped with adjustable limit value switches for minimal resp. maximum load. The limits can be adjusted and are indicated as signal (lamp) in a central station when exceeding the given limits. The load cell is designed for placing on a plane plate. If this should not be possible, a further distribution plate should be used,

Delivery content: Load cell without distribution plate, distribution plate as accesory for loading on small basic area


Type KLN . . M, ME, MF. Load [kN] Dimensions [mm} Weight [kgs]

nom. max. B C D E Cell Cell +

distribution plate KLN 120 A M 2,5 120 140 78 98 28 30 3.0 4.5 KLN 250 A M 2,5 250 300 111 132 28 30 4.0 6.5 KLN 500 A M 4 500 600 131 152 28 40 5.0 9.5 KLN 750 A M 4 750 900 161 182 28 40 6.0 12.5 KLN 1000 A M 4 1000 1200 189 210 28 45 8.0 18.0 KLN 2000 A M 6 2000 2400 218 242 30 65 11.0 40.0 KLN 5000 A M 6 5000 6000 358 385 50 85 46.0 113.0


System and execution: 1. Piston pad 2. Hydraulic fluid 3. Distribution plate (as accessory) 4. Indicating manometer 5. Protection cap Technical data Anchor load cell and distribution plate of steel St. 52 Measuring accuracy: +/-1% Temperature error: 1.2% at 20 °C temperature difference Application range: -30 °C up to 60 °C

1 2 3 4 5 VisioDocument


Model VHD, hydraulic remote control with GLÖTZL compensation valve

Model A Model B

For recording of measuring values of load cells with compensation valve the following devices can be used:

- Hand pump with change-over manifold - Automatic measuring and recording device

- Electric motorpump with change-over manifold


Type KLN . . M, ME, MF. Load [kN] Dimensions [mm} Weight [kgs]

nom. max. B C D E Cell Cell +

distribution plate KLN 120 VHD 2,5 120 140 78 98 28 30 3.0 4.5 KLN 250 VHD 2,5 250 270 111 132 28 30 4.0 6.5 KLN 500 VHD 4 500 580 131 152 28 40 5.0 9.5 KLN 750 VHD 4 750 880 161 182 28 40 6.0 12.5 KLN 1000 VHD 4 1000 1200 189 210 28 45 8.0 18.0 KLN 2000 VHD 4 2000 2400 274 298 30 70 16.0 40.0 KLN 5000 VHD 4 5000 5500 410 438 44 85 32.0 113.0


BC 210 mm

D

VisioDocument

VisioDocument

140

mm

BC

D


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]



Mounting of load cell A. Between plane areas with the B. For loading on a small basic same area load area a distribution plate is needed according to indicated dimension.

Loading

Bearing

Load cell

Distributionplate

Manual measuring equipment Automatic measuring device

Type MFM71


GLÖTZL Baumeßtechnik LOAD CELL Models DK, DKV and VW

Type: KLN . . . Art. No.: 43. . .

The Glötzl load cell consists of a piston pad which is formed by two rigid ring disks which are flexible by turned ring-dovetail grooves at the rims. The annular gap between the pads is filled with a hydraulic fluid which is recording the pressure at the defined area.

In case of the here presented hydraulic / electric models, the hydraulic pressure is converted into an electric signal by a piezoelectric pressure converter (models DK, DKV) resp. by a vibrating wire transducer (VW). Additionally, the cell can optionally be delivered with an installed temperature sensor (AD 590) resp. with a thermistor. The sensor and the corresponding electronics are placed in a lateral, compact and space-saving stainless steel housing with cable connection.

Model DK: Equipment with piezoelectric pressure converter, 4-conductor system, supply 4 mA constant current resp. 10 V DC, output signal 0 up to max. 1000 mV. When using the additional temperature sensor AD 590 (model DK / T), a 6-core cable will be necessary.

Model DKV: Equipment with piezoelectric pressure converter, 2-conductor system, installed amplifier, supply 10 up to 30 V DC (calibration with standard = 24 V DC), output signal standardized 4 up to 20 mA for the measuring range 0 up to max. load. When using the additional temperature sensor AD 590 (model DKV / T), a 4-core cable will be necessary.


Figure: Load cell KLN 750 DK 4 P043FO01.tif


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 – 0 · +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]



Model DK and DKV with electric remote control



Type KN..DK(DKV), (VW) Nom. max. B C D E Geber Cell +

distribution plate

KLN 120 DK 2,5 120 140 78 98 28 30 3.0 4.5 KLN 250 DK 2,5 250 300 111 132 28 30 4.0 6.5 KLN 500 DK 4 500 600 131 152 28 40 5.0 9.5 KLN 750 DK 4 750 900 161 182 28 40 6.0 12.5 KLN 1000 DK 4 1000 1200 189 210 28 45 8.0 18.0 KLN 2000 DK 6 2000 2400 218 242 30 65 11.0 40.0 KLN 5000 DK 6 5000 6000 358 385 50 85 46.0 113.0






Hand measuring device for vibrating wire transducer type SMC 2.02






System and construction: 1. Piston pad 2. Hydraulic fluid 3. Distribution plate 4. Electric pressure converter

ED

BC

1 2 3

155 mmVisioDocument

4


GLÖTZL Baumeßtechnik LOAD CELL Models KE

Type: KLN . . .KE . . . Art. No.: 43. . .

Construction: Installation possibility:

The load cell, type KLN . . . KE, system Glötzl, with hydraulic-electric pressure converter is designed for con-struction and installation in support plates. The Glötzl load cell consists of a piston pad with two rigid ring disks which are flexible by turned ring-dovetail grooves. The annular gap between the pads is filled with a hydraulic fluid which is recording the pressure on the de-fined area. In the case of the here presented hydraulic / electric models, the hydraulic pressure is converted into an electric signal by a piezoelectric pressure converter (models DK, DKV) resp. by a vibrating wire trans-ducer (VW). Additionally, the cell can optionally be delivered with an installed temperature sensor (AD 590) resp. with a thermistor. The sensor and the corresponding electronics are laterally placed in a compact, space-saving stainless steel housing with cable connection.

Model DK: Equipment with piezoelectric pressure converter, 4-conductor system, supply 4 mA constant current resp. 10 V DC, output signal 0 up to 1000 mV max.

Model DKV: Equipment with piezoelectric pressure converter, 2-conductor system, installed amplifier, supply 10 up to 30 V DC (calibration with standard = 24 V DC), output signal standardized 4 up to 20 mA for the measuring range 0 up to maximum load. For additional temperature sensor AD 590 (model DKV/ T) a 4-core cable is required.


CB

160

D50

Ring cladded with platic

HatchØ 35 mm

Equilizer com-pound, e.g. lead

foil


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11· 76287 Rheinstetten · Germany +49 (0)721 51 66 – 0 · +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]





Load [kN] Dimensions [mm] Weight [kgs] Type

KLN..DK(DKV), (VW) nom. max. B C D E Cell Cell + distribution plate

KLN 120 KE DK 2,5 120 140 81 100 28 30 2.5 4.0 KLN 250 KE DK 2,5 250 300 125 142 28 30 4.0 6.5 KLN 500 KE DK 4 500 600 125 142 28 40 4.0 9.5 KLN 750 KE DK 4 750 900 158 180 28 40 6.0 12.5 KLN 1000 KE DK 4 1000 1200 184 206 28 45 7.0 17.0 KLN 1400 KE DK 4 1400 1550 218 240 28 45 11.0 24.0 KLN 2000 KE DK 6 2000 2400 218 240 30 65 11.0 40.0 KLN 5000 KE DK 6 5000 6000 350 375 50 85 45.0 112.0


Digital readout unit for two meas. Channels type FMG 01-2




Hand Measuring device for Vibrating Wire Transducer Typ SMC 2.02



Readout Unit Type VMG 14.1


charger

- Robust housing



GLÖTZL Baumeßtechnik LOAD CELL Models DK, DKV and VW

Type: KKLN . . . Art. No.: 43.30

Figure: Load cell KKLN 3000 DK 6

The Glötzl load cell consists of a piston pad which is formed by two rigid ring disks which are flexible by turned ring-dovetail grooves at the rims.The annular gap between the pads is filled with a hydraulic fluid which is recording the pressure at the defined area.

In case of the here presented hydraulic / electric models, the hydraulic pressure is converted into an electric signal by a piezoelectric pressure converter (models DK, DKV) resp. by a vibrating wire transducer (VW). Additionally, the cell can optionally be delivered with an installed temperature sensor (AD 590) resp. with a thermistor. The sensor and the corresponding electronics are placed in a lateral, compact and space-saving stainless steel housing with cable connection.

Model DK: Equipment with piezoelectric pressure converter, 4-conductor system, supply 4 mA constant current resp. 10 V DC, output signal 0 up to max. 1000 mV. When using the additional temperature sensor AD 590 (model DK / T), a 6-core cable will be necessary.

Model DKV: Equipment with piezoelectric pressure converter, 2-conductor system, installed amplifier, supply 10 up to 30 V DC (calibration with standard = 24 V DC), output signal standardized 4 up to 20 mA for the measuring range 0 up to max. load. When using the additional temperature sensor AD 590 (model DKV / T), a 4-core cable will be necessary.



Model DK and DKV with electric remote control


C

B

D

80

E

1 2

3

4



Type KKLN..DK(DKV),(VW) Nom. max. B C D E Cell Cell +

distribution plate

KKLN 120 DK 2,5 120 140 78 98 65 30 3,0 5,0 KKLN 250 DK 2,5 250 300 111 132 65 30 5,5 9,0 KKLN 500 DK 4 500 600 131 152 65 40 7,5 13,5 KKLN 750 DK 4 750 900 161 182 65 40 10,5 19,0 KKLN 1000 DK 4 1000 1200 189 210 65 45 14,5 27,0 KKLN 2000 DK 6 2000 2400 218 242 80 65 24,0 48,0 KKLN 5000 DK 6 5000 6000 358 385 90 85 72,0 150,0


Digital readout unit for two meas. Channels type FMG 01-2




Hand Measuring device for Vibrating Wire Transducer Typ SMC 2.02



Readout Unit Type VMG 14.1




GLÖTZL Gesellschaft für Baumeßtechnik mbH· Forlenweg 11· 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected]


Version: 03.08.2005 / SP / P043.50.00.00.00.001R03_engl.doc

GLÖTZL Baumeßtechnik LOAD CELL for PILE INSTRUMENTATION • Robust and simple system with small overall height • Compact equipment, finally assembled • Short installation time, small construction restraint • Hydraulic principle, meas. system free selectable • Can be equipped and retrofitted from manual

measurement up to remote control • Approved and successfully used system

Description The hydraulic load cell consists of a piston pad with two disks which are flexible by turned ring-dovetail grooves at the rims. The 2 mm high pressure area of the pressure pad is filled with hydraulic oil and has an exactly defined area. By this, a conversion of hydraulic pressure into load / charge is ensured. The load cells have the advantage of a small overall height of 16 up to 25 mm, according to the load ranges.

Application The load cells are availabe in two models: • Load cell for measurements at pile bottom

- equipped with bottom frame for welding on microcellular rubber rim - Concreted tip

• Load cell for measurements at pile top - Flat construction for installation between pile top and fundamental plate

Measurement of load cells can be done with: • Manometer with direct reading of load • Glötzl hydraulic compensation valve • Electric pressure transducer, piezoelectric • Electric vibrating wire transducer For security of measuring value recording, normally an abundant sensor equipment is selected. It optionally consists of a hydraulic compensation valve with piezoelectric sensor or vibrating wire sensor.

Figure: Load cell with 1200 mm diameter at pile bottom, installed with microcellular rubber rim, welded-on bottom frame at pile basket and concreted tip

Measuring task: Measurement of pressure at pile top which resulted from loading, reduced by cover friction The microcellular rubber rim is effecting the total loading over the load cell.

Type: KLP .....Art. No. 43.50





Art. No.: Type Pressure pad Load range [mm] Ø Höhe [MN] Cell for pile top 43.50.1W.01 KLP 500 500 16 8. 43.50.1W.02 KLP 600 600 16 12 43.50.1W.03 KLP 800 800 16 20 43.50.1W.04 KLP 1000 1000 16 30 43.50.1W.05 KLP 1200 1200 18 45 43.50.1W.06 KLP 1400 1400 18 60

Diameter and load range as above, however for pile bottom cell 43.50.2W.XX

Additional equipment for pile bottom cells: 43.50.61.XX Microcellular rubber rim 43.50.62.XX Assembly bracket for connection at reinforcement basket 43.50.63.XX Concreted tip

Variants of meas. procedure: Art. No.: Abbrev. Description 43.50.V1.XX VHD hydraulic compensation valve system Glötzl 43.50.V2.XX DK piezoelectric pressure transducer 43.50.V3.XX VW Vibrating wire transducer, frequency range 2.5 – 3.5 kHz 43.50.V4.XX VM Vibrating wire transducer, model Maihak/Glötzl, frequency range 700–1000 Hz 43.50.V5.XX VHD/DK abundant model VHD + DK Further combinations of abundant models on request

Annulus coupling withe.g. polystyrene

Balance mortar

Cell for pile top withseated on PE foil

Double plate ringwith inner elasticbitumen layer

Blinding concrete

Pile top

Electric pressuretransducer

Ø 5

00 -

1.60

0 m

mac

c. to

mod

el

16 - 20 mm

Hydraulic cell withcompensation valve

Microcellular rubber rim

Pressure pad-Ø 500-1400 mm

Transp. eye

Concreted tip

Assembly bracket forreinforcement basket

Microcellull.rubber rim

Reinforce-ment

Electric press.transducer

Hydrauliccompensation-valve

Fig.: Pile bottom cell, bottom side with concreted tip

Fig..: Pile bottom cell, upper side, with cell, assembly bracket and microcell. rubber

Advanced Solutions

SETTLEMENT AND ELEVATIONTransducer

SE

TTL

EM

EN

T A

ND

EL

EV

ATIO

N


Settlement Cell for Pressing-in T4 >

Settlement Cell SB10 >

Electric Settlement Transducer ETKE >

Electronic Precision Hose Levelling GHD >

Metal Plate Settlement Indicator >

Magnetic Settlement Plumb >

Mechanical Settlement Plumb >

Plate Settlement level >

Measuring Tube for Settlement

Levels and Piezometers >



INSTALLATION and MEASURING INSTRUCTIONS for PNEUMATIC SETTLEMENT CELL

1. Function The settlement cells are working with a compensation valve like the cells for earth pressure and pore water pressure. The valve is loaded with a fluid medium by a plastic line. This fluid pressure is changed by occuring settlements (difference between central and cell).

When measuring the cell, a small constant air quantity is led into the feed line in which a back pressure is developing. This back pressure can only increase in the cell up to the searched size, as the overpressure valve in the cell is independently limiting a further increase of the back pressure. The thus detectable back pressure in bars at the beginning of the line, that means outside of the building, randomized to the loading medium, is equal to the searched settlement.

Type: T 4Art. No.: 23.01.01

Figure: Settlement cell type TB 4/8 LF 20

Figure: Settlement cell type TE 4 LF 12

Figure: Settlement cell type TA 4 30/30 LF 20 with settlement plate


Pressure Cell combined for Settlement Measurement and Pore Water Pressure

Types: TA 4/8 LF 12 Settlement cell for mercury loading, combined with pore water pressure cell of rust- and

acid-proof steel, Ø 40 mm with settlement plate, Ø 80 mm, maximum installation depth 12 m below measuring station

Control accuracy 1 cm settlement 0.01 bar pore water pressure, load limit 10 bars Pore water pressure cell with ceramic filter, optional with sintered metal filter TA 4/8 LF 20 Settlement cell for water load, model like type LF 12

maximum installation depth 20 m below measuring station Control accuracy: 5 cm settlement 0.01 bar pore water pressure, load limit 10 bars Pore water pressure cell with ceramic filter, optional with sintered metal filter

3. Installation

For installation, you have to take care that the central is placed on a fixed point. If this is not the case, the central has to be levelled before each measurement. The lines of the settlement cell consist of the load line B1 (B2) and of pressure- and return lines. These lines have to be installed in relieving loops.

After installation of the cell, a zero measurement should immediately be carried out, if possible, to receive the reference value for further measurements.

The load line of the cell can be layed out in single line. When using mercury as load medium, a load return line should be used so that in case of danger the mercury can be removed out of line.

4. Measurement The measurement can either be done with a manual air quantity regulator or with an electrically controlled air quantity regulator. But first, it must be checked whether the load medium of the change-over unit is reaching the marking in the inspection glasses. Small differences can be compensated by displacement of the inspection glasses. Otherwise, the load medium has to be refilled or exhausted. For measurement, the corresponding change-over valve has to be opened and then the measurement can be carried out with the air quantity regulator (see special description).

M1 - M5 = Meas. points 1-5 with change-over valve and level indication

Load medium Nz level indicating central

LM = Display of meas. value Recording with manual air quantity regulator,

electrically controlled air quantity regulator or with an automatic measuring station

D = Compressed-air supply

Meas.points

D

LM

Return lineLoad line B1Load line B2

Cell valve

Anchor plate NS

Pressure line

NZ

M1 M2 M3 M4 M5


4. Technical Data

Load medium

Water 1 cm settlement = 0.00098 bar accuracy = 5 cm Mercury 1 cm settlement = 0.01328 bar accuracy = 1 cm

Max. meas. depth

(height difference central – settlement cell) for the above mentioned accuracy Water 16 m = meas. value 1.568 bars Mercury 7 m = meas. value 9.296 bars

Connection bushing for pressing in Ø 45 mm, length 240 mm, one side for attachment to settlement cell, other side connection pivot, Ø 35 mm, length 40 mm for rods, thread R 1“

5. Assemblage of Measuring Station with Terminal for Wall Assembly and Single

Measuring Points Connection of Measuring Lines

corresponding to assembly example (see figure) - Connect pressure line transparent and return line

black - joined together by marking tape – to settlement cell and terminal, return line is ending free in terminal.

- Connect load lines B1 and B2, two transparent lines, to settlement cell and terminal.

- -

Figure: Measuring centralFigure: Measuring station with pneumatic measuring device ALR

Marking tapesLines must not beinterchanged

Pneumaticmeas. device

ΔtMin. difference:Installation height settlementcell to central 1.5 m additional0.5 m for each 100 m offurther meas. line length

Pressure line transp. SW 17

Return line black SW 14

Load line B1 SW 14

Load line B2 SW 14

Settlement cell


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten · Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 – 30 · http://www.gloetzl.com · [email protected]


6. Construction of Measuring Device, Change-over Manifold for Settlement Cell

Marking tapesLines may not be interchanged.

Δt

Min. difference installation heightof settlement cell to central unit1.5 m, addit. 0.5 m each 100 mfurther measuring line length

Load line B2

Pressure line transparent

Return line black

Load line B1

Pressure line transparent

Fillingvessel

B2

Meas. cabinet

B1

Air quantity regulator

or compr. air cylinderB1 SW 14

B2 SW 14

Settlementcell

P023.01SB03.vsd

7. Assembly and filling instructions Connection of measuring lines corresponding to assembly example (see figure) - Connect pressure line transparent and return line black - fitted to each other by marking tape - to

settlement cell and terminal, return line is free ending in terminal. - Connect load lines B1 and B2, two transparent lines, to settlement cell and terminal.

Filling of load line - Fill filling fluid, e.g. water demineralized, water with antifreeze agent as in the coolant of a car or acid-

free highly-fluid oils in the filling vessel. - Close filling vessel and apply 0.5-1 bar compressed air with an air quantity regulator or by a compressed

air cylinder with pressure-reducing valve. Adjust corresponding pressure at the initial pressure manometer of the air quantity regulator and operate the device in the function "filling".

- Fill the load ring line by the connection of the load line B2. Pour filling fluid slowly and without bubbles. Completely rinse the load circuit once so that air inclusions can be removed. Fluid requirement 0.7 l./100 m line, e.g. for 100 m line length (50 m distance) let flow out approx. 0.7 l at the load vessel. For this, take load vessel out of holding device and collect the filling medium in a vessel.

- An outlet cock for fluid, a cock for the draught and also a filling level indicator are attached at the filling vessel. Before opening the vessel, always discharge it. Furthermore, discharge the vessel after each filling procedure so that no air is binded in the fluid. Adjust filling level by sucking away or refilling of fluid at the load vessel.






Liquid level

LBE

4

32

1

2

3

4

Measuring time and accuracy dependent on tubing length

Settlement cell indication Indication range 1 / 1,5 und 2 m 1 Fluid container 0,5 ltr. 2 Feed valve 3 Valve for liquid indication 4 Standpipe SETTLEMENT CELL SB 10 of Polyamide High 290 mm Ø 125 mm L Aeration line Ø10/7 mm (8/6) B Load line Ø 6/3 mm E Drain pipe Ø 10/7 (8/6)

Type: SB 10Art. No.: 27.01.01

SETTLEMENT CELL Principle of Hose Levelling Instrument

The settlement cell SB 10 is operating according to the principle of the communicating tube. By a specially constructed overflow in the settlement cell, a constant liquid level can be achieved with an accuracy of ± 2 mm. The cell can be used for distances up to 200 m.

SETTLEMENT CELL SBA 1F SETTLEMENT CELL SB 10

+15

- 5

0

+ 5

+10

100 6050403020

Tubing length 200 m

Tubing length 20 m

Meas. time [min]

Dis

play

[mm

]

Installation: For installation, the display and settlement cell have to be levelled to an accurate position. The tubings must carefully be installed in the ascent from settlement cell to display. Measurement : Open valve 3, let liquid flow into standpipe 4 with valve 3, approx. 100-200 mm over measured value. Close valve 2. As shown in diagram opposite, the measured value is already reached after 30 minutes. Eventually carry out control measurement.


GLÖTZL Baumeßtechnik ELECTRIC SETTLEMENT TRANSDUCER

Type: ETKE Art. No.: 69.50

The electric settlement transducer consists of a relative pressure transducer which is loaded by a plastic dublicate line with a liquid medium. These load lines are constructed as ring circuit for subsequent filling.

By arising settlements, this liquid pressure (difference between central and transducer) changes and is recorded by measurement techniques.

Models: ET xx 30/30 zz Electric settlement transducer with settlement plate, for installation in backfills ET xx Ø6 zz Electric settlement transducer with conical tip, Ø 6 cm, for pressing in

ET xx 30/30 zz Measuring range 0–6 / 10 / 20 m

Model with settlement plate / with conical tip (see above)

Type of the pressure sensor KE / KO / VW (see reverse)

Electric settlement transducer

Meas. points M1 M2 M3 M4 M5

Level indication

Socket

for readout unit

Connection unit for single- and multiple meas. pointsLoad lines

(water filling with addition forfrost protection)

Electric connectioncable

Inductive pick-up

with settlement plate 30x30 cm

Special model with conical tip for pressing in




Types: ETKE yy zz Pressure sensor piezoelectric, 4-wire system

Technical data: Supply: (10 V DC) 4 mA Output signal: 0 - 1000 mV Overload security 1-200 bars: 50 % f.s.

Linearity incl. hysteresis: ≤ 0.5 % f.s. Thermal zero point drift: 0.1 mV/K

Connections: + Supply black (1) - Supply yellow (2) + Output red (3) - Output blue (4) Screening yellow/green Resonance > 30 kHz Meas. frequency 1 kHz

ETK0 xx yy Pressure sensor piezoelectric as above, with installed amplifier and temperature sensor Supply: 24 V DC Temperature sensor AD 590: Output signal: 4 - 20 mA Output signal: 1µA/K 2-wire system

ETVW xx yy Vibrating wire sensor, operating frequency from 2000 Hz up to 3300 Hz Thermistor type BR55, T25 = 3000 Ohm

Measuring ranges:

Transd.meas.range Water column Accuracy Type designation

0 up to 0.6 bar 6 m + / -10 mm ETKE 30/30 K0.6 ETKE 6 K0,6 0 up to 1.0 bar 10 m + / -15 mm ETKE 30/30 K1 ETKE 6 K1 0 up to 2.0 bars 20 m + / -50 mm ETKE 30/30 K2 ETKE 6 K2

Recording:

- Battery operated readout units

- Intermediate amplifier for remote control

- Manually operatable change-over manifolds

- Automatic measuring- and recording stations with data carrier resp. memory

Readout unit FMG 01-2

Further models on request


GLÖTZL Baumeßtechnik ELECTRONIC PRECISION HOSE LEVELLING INSTRUMENT Hydrostatic settlement measuring system Type: GHD

Art. No. 70.10/20

Already in the ancient Egypt, a cow intestine - filled with water - has been used to align the edges of a construction with simple means to a horizontal position and to measure them. The hose levelling instrument, known up to now, - based on the physical principle of the communicating tube – has nowadays an unstoppable „comeback“ on account of a large number of new application possibilities. Today, the idea is more and more accepted to upgrade this „old“ technology by use of the most up-to-date means and to use an electronic hose levelling system for long-term control of existing constructions and foundation soil movements. The GHD system is a fundamental extension of our first hose levelling system GSA, which has already and successfully been used in the year 1988 for the first time. The idea, to close a pressure balance system at one side, and to provide it with a pressure sensor, is still older in our company than the first version of an open hose levelling instrument itself and has consequently been implemented in the mobile hydrostatic settlement measuring system HPG and has finally been transferred to the system of the hose levelling instrument. By this reason, our „hose levelling instrument“ should now consequently be designated as hydro-static settlement measuring system, also on ac-count of its physical function, which describes the principle of this measuring device more appropriate and has finally taken the place of the hose levelling system which we knew up to now.

Function specification

The functional mode of a hydrostatic hose levelling measuring system can as well be described as sim-ple and also – in connection with the most different factors – as a complex one. The gravity pressure of the filling material in the reference container is charging the single pressure sensors by a hose fitting. The indicated measured value corresponds to the height difference of a sin-gle system measuring point in reference to the open liquid surface of the reference measuring point or in the expansion vessel. For the electronic hose level-ling instrument GHD, the hydrostatic gravity pres-

sure is determined as differential value to the refer-ence measuring point, and changes in the absolute liquid level of the reference measuring point are arithmetically compensated. While doing so, the single measuring points are measuring the existing pressure by barometric pressure-compensated sensors, which is charging the system and the single transducers by the liquid level. The measuring points can be installed in the construction itself in „any“ alignment you like within the measuring range.


Assemblage of a reference station with overflow vessel for a constant liquid level

1 Reference transducer for control of liquid

level und functional control of the circula-tion pump

2 Feedpipe or reference tube as level ref-erence for the complete measuring sys-tem

3 Liquid vessel for compensation 4 Throttling screw for regulation of flow rate

within the expansion tank 5 Circulation pump for circulation of liquid

within the expansion tank from vessel into the feedpipe

6 Refilling connection for filling liquid. Used medium: Monoethyleneglycol, mixed with demineralized and degassed water

7 Electric connection box with watertight screwing of measuring cable and inte-grated temperature sensor

8 Current supply connection 9 Barometric pressure compensation line 10 Pressure line for connection of further

sensor The application of a regulated overflow pump in connection with a reference transducer is pro-ducing an additional compensation security against hydrophysical influences to the com-plete measuring system.

Maintenance and care

The precision hose levelling system GHD can be classified as „maintenance-low“. For this, ventilation windows have been provided which considerably simplify the necessary expenditures in daily han-dling and limit them to a visual inspection. The digital version of a transducer has furthermore a semi-matt inspection glass in the lower part, which makes the system density and liquid flooding visible. Additional, a light blue control LED is placed in this housing, by which the electric functional rea-diness can be recognized. During data inquiry, the installation is once flashing through in a running light chain. If a disturbance should occur within one chain, which makes a read-ing of the system impossible, then the error can optically and directly be localized on account of this signal light without any intervention from outside

Fig.: Maintenace connection to system aeration


Essential advantages of the newly-developed hose levelling system in a roundup

• Facile maintenance by visual control and system ventilation by easily accessible air discharge screws at inspection glass and also by transparent lines

• Secured and quick transfer of data delivered at the same time by minimal delays of only some millisec-onds by our approved Glötzl bus-technology

• Robust, and site-suitable execution of housing, connections and components in a completely closed sys-tem. Utilization of high grade and corrosion-resistant materials für long-term application and continuous control activities

• Measuring ranges from 200 up to 1000 mm WC with high accuracy

• Analog attenuation regulation, adjustable from 100 up to 1 Hz at, permanent or temporary ambient vibra-tions by railway operation, compaction machines, or generators. The digital version has additionally a freely-adjustable „sliding mean value“ of up to 40 measured values within one second in retrospection.

• No recalibration, normally required parameter changes and complicated compensation calculations for evaluation are not necessary, as the specific parameters of the sensor are processed in the controller it-self. The indicated measured value in mm of the controller version can directly be used for representation and evaluation.

• Nearly contemporaneous acquisition of all transducers of one system for online representation of con-struction movement possible.

Examples for application ranges and peculiarities

Heaves injections or freezings of foundation soil for underriding consisting constructions require an up-to-date online supervision for the control of corresponding machines and pumps for – among others – the proof of the efficiency of the undertaken measures and/or to observe the limit values in the construction movement.

Specific temperature dependences of the single sensors themselves are determined in an expensive platform trial over several temperature degrees, and programmed in the controller by means of pitch line function. By simultaneous temperature measurement, the arithmetical compensation is already done before the output of measured values. This is an important advantage in case of installations, which are exposed to the weather, e.g. in case of settlement controls of constructions and embankments.

An up-to-date controller technology allows a nearly simultaneous acquisition of all systems to produce a real-ity-near snapshot of height differences and to present it graphically. Application fields for this are machine control functions and online controls in most difficult and statically unstable environment.


Typical schematic assemblage of a measuring equipment:

Cable connection

housing

Overflowvessel

Hydrostatisches Setzungsmesssys

temTyp GHA 200 PR U

SN.: 05 023

GlötzlGesellschaft für Baumeßtechnik mbH

1

Hydrostatisches Setzungsmesssystem

Typ GHD 200 WSN.: Muster


n


Typ GHD 200 WSN.: Muster



Typ GHD 200 PR WSN.: Muster


Hydrostatic settlement meas. Systemwith pump and reference point

R

Central aeration line

PE 8/6 yellow

Load line PE 8/6 transparent

Measuring station

MainsIsolating valvefilling connection of system

Isolating valveoverflow vessel

Overflow edge = reference level of measuring system

Reference level of sensor

Standard instrumentation

Isolating valvehydrostatic settlement

measung system

Fig.: The graph shows the functional assemblage of the connection of single sensors with the reference. In this case, a reference vessel with distribution pump is shown, which produces a constant level of the liquid level and enables an absolute view of the single sensors. Thus, movements can be observed within the alarm limits for signalling devices. Presupposition for this is a stable positioning of the reference station in the altitude outside of the area which should be observed with geodetic survey.

Technical data : GHD-D (digital) GHD-A (analog) Sensor housing Dimensions (WxHxD) : 50x230x50 mm 50x170x50 mm Weight : 1.7 kg 1.5 kg Supply : 18 up to 36 V DC 15 up to 30 V DC Current consumption : max. 35 mA max. 20 mA Output signal : Digital (16 bit A/D-conversion) Analog: 4-20 mA RS485 galvanically separated Meas. value acquisition: MCC, MFM, MDL41 or freely selectable, or

PC-Acquisition with GLA7 MFM, MDL41 Resolution : 0.01 mm 0.01 mm Linearity : < 0.1 % f.s. (typical) < 0.2 % f.s. Long-term deviation : 0.1 %/year 0.1 %/year Temperature range : -20° up to +80 °C -20° up to +80 °C Measuring ranges : 200, 500, 1000 mm 200, 500, 1000 mm Measuring cable : 5 x 0.5 mm² + screen 3 x 0.5 mm² Temperature course : compensated Compensation by






METAL PLATE SETTLEMENT INDICATOR

Type: MSD 01 Art. No: 84.01

The metal plate settlement indicator, type MSD 01, is used for settlement measurement in borings or backfills. A measuring probe is conducted in a guide tube of plastics, by means of which the levels of settlement plates can be determined.

The settlement plates are installed with rising backfill, mounted around the tube. As soon as the probe has reached the level of the settlement plate, a measuring signal or tone is given which is indicating the position of the plate.

By repeated measurements, a mean value is yielded which can be read off at the graduated measuring tape.

Figure: Measuring equipment, consisting of:

- Indicator with accu operation - Head receiver - Measuring probe

- Transport case - Cable reel with measuring tape - Pulley guide

Settlement measurements can be done with this instrument without tuning of the measuring device. The measuring plate (measuring mark) is reached with the maximal possible pointer setting resp. with the highest sound of the accustic display. The accuracy is +/-2 mm.

The material of the measuring marks is steel, VA. However, also aluminium plates are available with a centrical boring for the guide tube. The measuring device must be adjusted to the corresponding material resp. must be calibrated.

The automatic operation of the indicator is ensuring the independence of the display from the size of measuring mark, but not from material.


Technical Data:- Readout unit with accu operation, automatic charger 230 V , battery charging 12 V - Probe Ø 30 mm, current consumption 4 - 20 mA, watertight up to 20 bars, plastic housing - Measuring tape, plastic coated metal tape with cm-graduation and grouted electric lines, cable lengths 20, 50, 100 and 200 m - Head receiver 30 Ohm - Cable reel with slip ring contacts - Pulley guide with nonius - Transport case, weight complete 22 kgs - Hole diameter of measuring plates: Steel 100 - 200 mm, aluminium 50 - 200 mm

Measuring Principle of Probe, Type MSD - S 30 The probe contains a transformer. When approaching a measuring plate – which is a short-circuit coil -, energy is extracted from the transformer. The longer the coupling becomes, that means the nearer the probe comes to the plate, the more energy is extracted of the primary circuit of the transformer.

When reaching the measuring plate, the shortest distance is reached and thus the biggest coupling, that means the biggest extraction of energy from the primary circuit.

Figure: Measuring probe MSD-S 30

Figure: Measuring equipment with guide tube Technical Data:

Output: 4 - 20 mA Lamp 280 mm, Ø 30 mm Pressure watertight max. 20 bars Weight 0.35 kg Casing of plastic POM

Readout Unit, Type MSD 01 The readout unit is placed in a robust aluminium pressure measuring casing. Power supply is done by maintenance-free NI-Cd- sintered accus which can be recharged by the installed automatic charger.

Measured value and cell voltage can be controlled with the instrument. In positions V1 and V2 the measuring size is indicated with two amplifications. The full stroke is reached with 20 mA.

Technical Data: Accu 8 V/4 Ah Operating period 10 hrs./20 °C Locating accuracy +/-2 mm Weight 4 kgs

Figure: Readout unit MSD 01


Functions: Connections and Circuits PROBE Connector LS Head receiver connection 30 Ohm VOL Sound volume regulator ACCU Socket for charge with battery 12 V MAINS Mains connection 230 V, 50 Hz CHARGE Charge control-automatic charger Lamp ON = Main charge, OFF = Recovery charge OFF/TEST/ON Main switch, TEST green operating range AUT/V1/V2 Function switch, measuring type ANG Automatic function

AUT Function When passing through a measuring plate, a definite display is reached, dependent on kind and material of plate and also on size of boring. However, in practice it is more simple to reach the same pointer setting resp. sound level at the location of the measuring mark. This is achieved with the automatic function which is always adapting the instrument amplification to the maximum measuring signal and is displaying it in a spreaded range.

Transport Case A transport case of aluminium is available for the complete measuring equipment. Dimensions: Length: 585 cm, height: 385 cm, depth: 240 cm Weight complete with instrument 22 kgs

Cable reel with Measuring Tape, Type MSD K (50) The measuring tape consists of a plastic-coated metal tape with cm-graduation. Four cores are poured in the plastic coating for current supply. The plug connector is watertight up to 20 bars. Therefore it can be removed for transport. The cable reel is equipped with slip ring contacts.

Models - MSD K 20 measuring tape 20 m - MSD K 50 measuring tape 50 m - MSD K 100 measuring tape 100 m - MSD K 200 measuring tape 200 m

Figure: Measuring tape and cable reel with

slip ring contact

Figure: Pulley guide

Pulley Guide, Type MSD-F The pulley guide MSD-F can be used for guide tubes of 50 up to 200 mm diameter with a maximum wall thickness of up to 10 mm.

The measuring tape is carefully led into the guide tube. The probe position can be read in mm accuracy. By means of a level elongation tube the cable reel can be hinged.


Measuring Plates The settlement plates are available of VA material and aluminium in different sizes. In case of own production of metal plates, it is important to know that the pointer stroke should not exceed the scale indication of 90. Admissible hole diameters for measuring plates: Steel Ø 100 - 200 mm, VA material Ø 100 - 200 mm, aluminium Ø 50 - 200 mm

Standard Plates for Embankments MSD - A 300, alu Ø 60 x 300 x 300 x 4 mm MSD - VA 300, VA Ø 100 x 300 x 300 x 3 mm Further dimensions on request

Installation in Bore Holes MSD - A 12, alu Ø 60 / 120 x 3 mm MSD - VA 15, VA Ø 100 / 150 x 2 mm

Guide Tubes As guide tube, plastic tubes with a clear diameter of 40 – 100 mm can be used. Meas. tubes PVC, NG [outer Ø in cm] NG 4 NG 5 NG 6,3 Ø 40 x 3 mm Ø 50 x 3.5 mm Ø 63 x 7 mm

Meas. tube w. threaded sleeve each 2.5 m long

89.01.01 89.10.01 89.20.01

Meas. tube w. telesc. bushing each 2.5 m long

89.01.02 89.10.01 89.20.01

Seal cap of PVC for base 89.01.11 89.10.11 89.20.11 Screw/end cap of PVC for head point 89.01.12 89.10.12 89.20.12 Screw/adhesive sleeve for shortening 89.01.13 89.10.13 Protection tubes, heavy model 6“ , length 1.5 m with seal cap 89.40.01

Figure.: Measurement with metal plate settlement indicator





MAGNETIC SETTLEMENT PLUMB Type: ML . . .

Art. No.: 84.10

Magnetic settlement plumbs are used for simple, quick and reliable measurement of settlements in inclination measuring tubes, special measuring tubes for settlement measurement or piezometer tubes. The measured value can directly be read off at the exact measuring cable.

Procedure As soon as the probe has reached the magnetic field of the magnetic ring, an electronic switch is activated by the reed contact which is releasing a light signal. As accessories, also an electronic buzzer can be delivered. By a light lifting, the signal is immediately going out. Thus, the measuring point can exactly be scanned. The measuring depth is directly read off at the cable in meters and centimeters. Smallest graduation is 1 cm. By a pulley guide with nonius, alterations can exactly be recorded in millimeters.

Cable 2-core polyethylene flat cable with high-tensile, rustproof steel strands, black cm-graduation deeply pressed into the tape, high accuracy with decimeter lettering and red meter marking

Cable Reel Light cable reel with fixing for plumb

Plumb 18 mm Ø, approx. 200 mm long, with reed contact, special sealing, tension discharge and bending protection

Electronics Completely transistorized, no current consump-tion in case of non-use Current Supply 9 V – with a commercial block battery 9 V All parts of the instrument are corrosion-resistant. The instrument is supplied ready for operation with leak-proof batteries. Figure.: Magnetic settlem. plumb with 100 m

length with light-weight hand reel

Article Nos.: Types on stock*

84.10.01 .01 .02 .03 .05 .06 .07 .08 .09 Cable length [m] 15* 30* 50* 100* 150 200 300 500 Type designation ML 15 ML 30 ML 50 ML 100 ML 150 ML 200 ML 300 ML 500

P084.10FO01.tif





For determination of settlements, magnetic rings are pushed over a guide tube. These rings are moving with the settlement and the magnetic field resp. its position change is recorded with the measuring probe by a reed contact. Under good conditions, the achieved accuracy is +/-2 mm. This system is suitable for settlement measurements in borings or embankments, in inclination measuring tubes, piezometers and special tubes for settlement measurements.

The guide tube must be sealed to avoid the penetration of dirty particles. During installation, it has to be filled with water in order to prevent an uplift in borings filled with water.

If magnetic rings are installed with the guide tube of the inclinometer, they have to be pushed over the tube and to be fixed during installation time.

Magnetic Rings 84.10.60.01 Magnetic ring, type MSK Ø 62/95 mm 84.10.60.02* Magnetic ring, type MSK Ø 62/95 mm with sliding bow 84.10.60.05 Magnetic ring, type MSK Ø 62/120 mm 84.10.60.06* Magnetic ring, type MSK Ø 62/120 mm with sliding bow 84.10.70.01 Magnetic ring, type MSK Ø 90/120 mm 84.10.70.02* Magnetic ring, type MSK Ø 90/120 mm with sliding bow 84.10.70.05 Magnetic ring, type MSK Ø 90/150 mm 84.10.70.06* Magnetic ring, type MSK Ø 90/150 mm with sliding bow * Sliding bows for attachment at measuring tube and installation in borings

Version: 10.02.2003 / IG / FGL / RA / P084.30.00.00.00.001R01_engl.doc




MECHANICAL SETTLEMENT Plumb MSM .....

Type: MSM 50(75) Art. No: 84.30

• Robust • Easily understand. system • Easlily to handle • Low-cost solution • Mechanical function • Can be used in standard • No electronics inclinatination meas. tubes The MSM settlement meter is a pure mechanical measuring instrument with which by means of a device the tube end in measuring tube cords can be scanned in reference to the head point of the measuring tube. It was the intention to develop an instrument very easily to operate which can be used for the recording of settlement in inclination measuring tubes in embankments or borings for which it is sufficent to record settlements with an accuracy of +/-1 mm. Measuring tubes are used which also can be applied for inclination measurement or simple PVC/ABS- or PE-HD-tubes. For intake of the settlement, the measuring tubes are installed by means of couplings in which the measuring tubes are assembled with the required distance for intake of the settlement. Measuring tubes are available in lengths of 1, 2 and 3 m. They are delivered with mounted coupling for settlement intake up to 50 mm or optionally 100 mm. The follow-up tube is fixed with 1 up to 4 rivets – dependent on strength – for the installation on site. The rivets are shearing when a settlement occurs resp. in case of displacement of the measuring tubes so that the shortening or lengthening of the tube tour is absorbed in the couplings. The absorption of the settlement at the coupling can still be reinforced and secured by a settlement ring. When using a plastic tube, a comparitive measurement –if required - can be carried out with a metal plate settlement indicator, type MSD, as a provable and independent system. For measurement, the plumb is led down into the deepest of the bore hole and the first measuring mark is taken as basic length for the following measuring marks. In case of non-stable underground, a geodetic altutude control of the tube head point should generally be done parallely to each measuring series. By the position of the scanning lever, the plumb is sliding into the bore hole deepest without remarkable resistance. During the drive upwards resp. during measuring drive, the lever has a blocking effect at the tube coupling and the measuring tape can be tightened for distance reading. The further drive to the following measuring mark is done by lowering of the plumb by approx. 30 cm and quick passing of the mark to be measured.

• robust • einfach bedienbar • mechanische Funktion • keine Elektronik



PLATE SETTLEMENT LEVEL - mechanical

Type: GPSP – S 40/1 - V 40/1

Art. No.: 84.90

Plate settlement levels are simple auxiliary aids for the geodetic measurements to record the settlement in the backfill body and foundation base. A well visible identification of the settlement levels is necessary for not being destroyed or damaged by construction activity. For recording of the consolidation over a longer time, this is a simple equipment to determine – in connection with the conventional surface measurements – the consolidation in the backfield area and the underground behaviour regarding settlements. The plate settlement levels are availabe with bars ½“, in models of steel, galvanized (water tube), or in stainless steel, material No. 1.4571 and can be delivered in lengths of 1 or 2 m. Assemblage and function: The assemblage is shown in the illustration opposite. The measuring level consists of a sole plate (settlement plate) with attached bars, which is elongated dependent on filling height. In order to keep away the influence of bulk material from measuring rod, a casing tube is slipped on it. This casing tube is available in two different diameters and with a length of 1 m and is inserted. By this, a telesopic-like connection is produced. This connection can absorb the settlement araising in the backfilling and ensure the free mobility of the settlement bars.

• Complete system • Bars of steel, galvanized or of stainless steel • Bars lengths 1 and 2 m with telescopic protection tubes




Measurement: The upper end of the settlement bars is included in the geodetic height measurement. By the fix length of the bars, the altitude of the sole plate can de determined and thus also the height change of the embankment. Thus it is possible to judge the consolidation of the underground and also that of the embankment by corresponding measurement of the prevailing outline. For protection during construction activities, it is recommended to put a shaft ring around, with which the measuring point is better marked and - to the greatest possible extent - is protected against influences by construction operation. For adaption of the casing tube, it can always be attached in a shortened type. Models and article numbers: 84.90 Type GPSP-S40/1, model of steel, galvanized with ½ inch bars 84.90.01 Sole plate of sheet steel, 400x400x5 mm, with protection tube 0.75 m long 84.90.02 Bars of steel, galvanized, ½ inch, in lengths of 1 m, complete with casing tube 84.90.03 Bars of steel, galvanized, ½ inch, in lengths of 2 m, complete with casing tube 84.90.04 Head point protection tube, Ø 40x2.4 mm, with cap 0.75 m long Single parts 84.90.02.01 Bars of steel, galvanized, ½ inch, in lengths of 1 m with joint bolts 84.90.03.01 Bars of steel, galvanized, ½ inch, in lengths of 2 m with joint bolts 84.90.05.01 Casing tube HDPE, Ø 32x2.4 mm , 1 m long 84.90.05.02 Telescopic casing tube, Ø 40x2.4 mm, 1.2 m long with total 200 mm overthrust length 84.91 Type GPSP-V40/1, model of stainless steel, mat. No.: 1.4301 with ½ inch bars 84.91.01 Sole plate of sheet steel, 400x400x5 mm, with protection tube 0.75 m long 84.91.02 Bars of stainless steel, ½ inch, in lengths of 1 m, complete with casing tube 84.91.03 Bars of stainless steel, ½ inch, in lengths of 2 m, complete with casing tube 84.91.04 Head point protection tube, Ø 40x2.4 mm, with cap 0.75 m long Single parts 84.91.02.01 Bars of stainless steel, ½ inch, in lengths of 1 m with joint bolts 84.91.03.01 Bars of stainless steel, ½ inch, in lengths of 2 m with joint bolts 84.90.05.03 Casing tube HDPE, Ø 32x2.4 mm , 1 m long 84.90.05.02 Telescopic casing tube, Ø 40x2.4 mm, 1.2 m long with total 200 mm overthrust length Special models on request Assembly:

- Lay settlement plate on a flat machined aera and assemble the first part of bars of 200 mm (accessories of settlement plate).

- Survey the geographic level of the plate. - Screw on the first bars in a length of 1 or 2 m. - Slip on the first casing tube and additionally the first telescopic casing tube at 2 m bars. - Back-fill a protection angle of repose of bulk material and eventually install shaft ring for protection. - Before reaching the end point of protection tube, elongate level with bars, and, if required, with casing

tube or telescopic casing tube, and record it. - In each case, fit level end with head point protection tube to prevent the dropping in of pollutants. - According to requirement, the end of bars and the filling height have to be surveyed at ground-line.




MEASURING TUBE for SETTLEMENT LEVELS and PIEZOMETERS

Type: NW . . . Art. No.: 89. . .

For determination of settlement, measuring marks are placed on top of a guide tube. The measuring marks are moving with the settlement and thus give information about the relative movement, referred to the head point of the measuring level. Head Point Configuration with freestanding tube and protection tube with oval street cap for seal cap lockable cap subsurface installation

Telescopicbushing

Screw-typesleeve

Meas. marks

Screw andtelescopicbushing

Filterpart

Seal cap

Filter tip metalfor pressing in

Inclination measuring tube PVC in connection with measuring marks, telescopic bushings for intake of settlements Further details see inclination measuring tube.

PVC tube Ø 50 mm, with screw-type sleeves for installation in embankments or borings, with filter tip for piezometers resp. water level measurements

PVC tube Ø 50 mm, with screw-type sleeves and telescoping bushing for intake of settlements Filter tip for piezometer resp. water level measurements

All measuring tubes can be equipped with different filter tips as piezometers or for water level measurement.

For installation in bore holes we recommend bore diameters from 150 mm on.


Advanced Solutions

INCLINATION AND DEFORMATION Transducer IN

CL

INA

TIO

N A

ND

DE

FO

RM

ATIO

N


Inclination for Measurements at Buildings >

Inclinometer Chain >

Plumb Wire >

Plumb Wire Deviation Probe >

Vector Plumb >

Electronic Vector Plumb >

Plump Wire Panel >

Alignment Wire Position >

Alignement 1achsig (only in German) >


GLÖTZL Baumeßtechnik INCLINATION MEASUREMENTS at BUILDINGS For registration of inclination changes at buildings, high-precision inclinometer sensors are used with a restricted measuring range of +/-10 ° and a resolution of measured values of 0.01 mm/m.

The inclination measuring equipment is either fitted with one sensor for the measuring axis X or with 2 sensors for the axes X and Y and furthermore with a temperature sensor.

The complete measuring equipment, consisting of probe and holder, is vertically fixed at the points to be measured. For an exact vertical alignment and for later controls of the stability of measured values, the probe tube is pivotally arranged in the holder for a rotation throughout 180 degrees for a turnover measurement. This function is especially important for long-term measurements to determine the drift of the sensors in definite time intervals and then to include this value in the evaluation. The measuring probes are equipped with a controller, in which the calibration values are calculated and a linearization of the sensors of 3rd order is done. The measured values are transferred by means of RS485, protocol Glötzl MFA6. This method enables the interconnection of max. 4 lines with up to 128 probes each. The transmission length is 1,000 m without intermediate amplifier.

Recording of Measuring Data For recording of measuring data the following instruments are available: 1. Manual recording with storing readout unit VMG 11-1, by switch-over

manifolds or by direct connection. In this case, normally one turnover measurement is done at each measurement. For this, the probe is turned in the holding device by 180°.

2. Automatic recording with a measuring device which is continuously recording and storing the measuring values in a fixed time scanner. It is also possible to transfer the measured values directly online to a computer and to recall them in time intervals. The evaluation is done directly after data income by the evaluation program GLA 7.

For control of limit values, corresponding alarm threshold values can be set. Furthermore, also an event-controlled data logging is possible.

Type: NMGG DArt. No.: 75.05




Technical Data:

Probe NMGG D 5/1 NMGG D 5/2 NMGG D 10/1 NMGG D 10/2 Article No.: 75.05.01.01 75.05.02.01 75.05.11.01 75.05.12.01 Vertical, measuring axes: X X and Y X X and Y Dimensions: Probe tube, length 300 mm, diameter 45 mm Weight: 1.5 kg Measuring ranges: +/-5° +/-5° +/-10° (14) +/-10° (14) Indicating ranges: +/-87.15 mm/m +/-173.65 mm/m Linearity: +/-0.2 % f.s. Hysteresis: +/-0.01 % f.s. Zero point drift: 0.009 mm/m/°C Range drift: 0.018 mm/m/°C Temperature operating range: -20 °C up to +60 °C

- Installed controller with 16-Bit-AD converter, installed data transfer via serial interfaces RS 485, protocol Glötzl-MFA6 for max. 250 instruments

Holder for Probe with Turnover Device - for assembly at buildings on vertical areas - with 2 holding devices for probe fixing, weight 2.5 kgs - below holding device with ball bearing for turning of probe during measuring operation (turnover

measurement) - upper holding device with locking lever and distortion connection - Dimensions: Height 465 x width 100 x depth 65 mm

Fixing area

Fixing bolts

Basic plate

upper fixingplate

Turnover device

1055

A -

A +

75.05SB02.vsd

21M6

17,517,565

190

2019

560

50

17,5

Crosssection A-A

Cableconnection

upper fixing

Turnover device

upper fixing platewith clamping device

Probe

lower fixing plate withball bearing

lower fixing

100

11

11

Crosssection A-A

Ball bearing

195

1047

Ø 1

50

Ø 60

Ø 44


GLÖTZL Baumeßtechnik INCLINOMETER CHAINS for vertical or horizontal DEFORMATION MEASUREMENTS

Type: SNMGD Art. No: 75.50

The inclinometer chain measuring equipment is used in those cases where working with mobile units is too expensive or when measuring value changes must permanently be available for security reasons. Application ranges are deformation measurements of buildings and their surrounding area during construction period as well as monitoring and controlling of stability over a period of several years.

Measuring Equipment The measuring equipment can consist of several chains of inclinometer probes (max. 128 probes) which are connected one to each other by universal joints in lengths of 1 up to 5 m. The measured deviation referred to the measuring direction of the individual probes results – by addition of all sensors – in the total deformation in the measuring section related to a precedent first measurement. Available for this purpose are vertically measuring probes with one or two measuring axes as well as horizontal probes with one measuring axis which is measuring vertically. The probe is installed in a stainless steel housing which is impermeable to presswater.The probe is equipped with a connector on both ends for connection of the following probe or to a central data recording unit.The probes are connected one to each other by rods equipped with universal ball joints, whereby also the basic measuring length is determined. Using the standard type, the probes are led by guiding wheels in the inclinometer tube with grooves or in simple tubes with special self-centering three-point mechanism.

Measuring Value Recording Connection of the probes is done by a 5-core cable. The measuring values are recorded by an internal 16-bit-AD-converter, calculated by a microcontroller and transferred to the recording station via a bus-capable RS485-interface.


Construction of the Inclinometer Chain Equipment - Application in inclinometer tubes for horizontal and vertical deformation measurements

Article Nos. - Description 75.50.10.10 Hanging bolt 75.50.10.20 Cardan joint 75.50.10.30 Head piece

with guiding wheels 75.50.xx. Measuring probe 75.50.10. Horizontal probe, 1 measuring axis,

type SNMGD HP1/5, semiconductor sensor 75.50.20. Horizontal probe, 1 measuring axis,

type SNMGD HQ1/30, accelerometer 75.50.30. Vertical probe, 1 measuring axis, type SNMGD VP1/5, semiconductor sensor 75.50.31. Vertical probe, 1 measuring axis, type SNMGD VP 1/10, semiconductor sensor 75.50.40. Vertical probe, 1 measuring axis, type SNMGD VQ1/30, accelerometer 75.50.41. Vertical probe, 2 measuring axes, type SNMGD VQ2/30, accelerometer

75.50.10.50 Basic connection

1 Hanging bolt

2 Cardan joint

3 Head piece w. guiding wheels

4.1 Upper probeconnection

4 Meas. probe

4.2 Lower probeconnection

5 Basicconnection

6 Basic rods

2 Cardan joint

4 Meas. probe

5 Basicconnection

6 Basic rods

7 End piece with guiding wheels

3 Head piece w. guiding wheels

P075SB01.vsd

75.50.10.60 Basic rods 75.50.10.61 1 m probe 75.50.10.62 2 m probe 75.50.10.63 3 m probe 75.50.10.64 4 m probe ) only for vertical 75.50.10.65 5 m probe ) measuring equipment

75.50.10.70 End piece with

guiding wheels 75.50.10.80 Connection cable 75.50.10.81 1 m probe 75.50.10.82 2 m probe 75.50.10.83 3 m probe 75.50.10.84 4 m probe 75.50.10.85 5 m probe 75.50.10.90 Cable for probe – measuring station 75.50.10.95 Suspension device for measuring

equipment, specified according to client’s request


Application Ranges for Inclinometer Chain Equipment

Vertically measuring units Horizontally measuring units - Deformations in retaining dams - Stability control of embankments, - Settlements in embankments slopes and street dams - Settlements in landfills - Construction-accompanying measurements - Deflection of mains supply lines in excavations, on diaphragm walls and in tunnel tubes

75.50.10 75.50.20 75.50.30 75.50.32 75.50.40 75.50.41Article No.:

Technical data 75.50.11 75.50.31 75.50.33

Type SNMGD....... HP1/5 HQ1/30 VP1/5 VP2/5 VQ1/30 VQ2/30

HP1/15 (HP1/10)

VP1/15 (VP1/10)

VP2/15 (VP2/10)

Model Horizontal Vertical

Measuring axes 1 1 1 2 1 2

Probe diameter [mm] 38 30 38 38 30 30

Basic rods Ø [mm] 20 20 20 20 20 20

Measuring lengths [m] 1-3 1-3 1-5 1-5 1-5 1-5

Measuring range 5 30 5 5 30 30

± ....° 15 (10) 15 (10) 15 (10)

Max. operating range 5 90 5 5 90 90

± ....° 15 15 15

Linearity ± ...% f.s. 0.2 0.005 0.2 0.2 0.005 0.005

TC in zero point 0.01 0.005 0.01 0.01 0.005 0.005

± ...% f.s./K 0.005 0.005 0.005

TC in measuring range 0.02 0.006 0.02 0.02 0.006 0.006

± ...% f.s./K 0.01 0.01 0.01

TC in operating range / °C -40 up to 85

-5 up to 60

-40 up to 85

-40 up to 85

-5 up to 60

-5 up to 60

Lateral sensitivity ± ...g/g < 0.3% * 0.002 < 0.3% * < 0.3% * 0.002 0.002

Hysteresis ± ....% f.s. 0.002 0.0005 0.002 0.002 0.0005 0.0005

0.005 0.005 0.005

Diameter of 48 - 75 48 - 75 48 - 75 48 - 75 48 - 75 48 - 75

guide tube (mm)

Special model Three-point guiding mechanism for standard tubes, diameter 50 up to 150mm

* = up to ±10 % lateral inclination



Data Recording Units:

Multimeter with data memory and measuring point allocation,

type VMG 14.1 (see detailed single description)

Automatic measuring station type MCC

(see detailed single description)




GLÖTZL Baumeßtechnik PLUMB WIRE MEASUR. SYSTEMS

Type: GA . . . Art. No.: 82.01/05

Measuring principle Pendulum plumb type GAGL Floating plumb type GARS • Fixed point of plumb wire: at the top • Fixed point of plumb wire: at the bottom • Strain of plumb wire by traction to bottom • Strain of plumb wire by traction to top In both cases, the plumb wire is aligning along the gravity effective at the measuring location, namely independently from environmental influences (temperature-, humidity-, barometric pressure changes a.s.o.).

9

8

6

4

3

1

2

7

5

Scheme of a weight plumb device 1 Anchoring console 2 Plumb wire clamp 3 Plumb wire 4 Plumb wire meas. device el./opt. 5 Console for pl. wire meas. system 6 Drop screen 7 Weight 8 Dampening fluid 9 Dampening vessel

For barrages, it is generally the objective to unite the pendulum plumb measurements with the geodetic measurements. For this purpose, the horizontal displacement of the wall top is recorded with a weight plumb, whereby the elongation of the measuring line is done with a floating plumb for getting an undisplaceable reference point in the underground. Floating plumb-plumb wires are anchored in the stable underground in stainless steel pipings, the most appropriate exchangeable ones. The spatial bending line of piping in the underground can be recorded for an installed plumb wire by means of a plumb wire deviation probe with the existing optical or electrical plumb wire measuring instruments. Plumb devices are operating with a high accuracy because its mecha- nisme are nearly not subject to friction- and temperature influences. Inclination movements of a construc-tion can be recorded without any problems by measurement of the horizontal displacement of the con-struction - relatively to the free hanging plumb wire. A continuous bending line can be determined if the relative displacements are measured in several storeys. Normally, the movements in two directions (horizontal) are measured at a measuring station so that a spatial bending line e.g. in tower constructions can be determined in case of several measuring points.

Scheme of a floating plumb device 1 Float vessel 2 Float

3 Console for float vessel 4 Tension lock with hook and eye 5 Plumb wire clamp/ screw-type sleeve 6 Plumb wire meas. device el./opt.

7 Console for pl. wire meas. system 8 Plumb wire 9 Drop screen

10 Plumb wire anchor 11 Tight closure of piping 12 Plumb wire deviation probe 13 Reel for tape measure

1

2

3

4

5

7

8

5

11

12

10

6

13




Console for float vessel Console for plumb wire meas. system

Anchoring console pendulum plumb

Plumb wireclamp

250

250X = _______500

X = ______500

450

Float vessel

60 x 60 x 3

Thread bar

60 x 60 x 3

870

Meas. range ±30 mmUpdrift 20 kg

370

480

Ø540

ca.

600

Dampening vesslwith 3 weights

Dampening vesselwith 1 weight 11

50

300

250

750

Drain cock

Weight 10kgseach, Ø 90 x 250

Weights 10kgseach, Ø 50 x 650

Drain cock

Mea

s. ra

ngeh

± 5

0 m

m

55mm. Meas. range ± 75 mm 55mm.

Distance 150mm.

Mes

sweg

100

mm

.

340mm.

50m

m.

50mm.

300m

m.

Ref

lekt

or

60m

m. Reflector

100m

m.

100m

m.

300mm.

50mm.

25m

m.

280mm.Apron

Rangevector

plumbot

Mittelpunkt Drahtlauf

Dampening vessel GPDB


GLÖTZL Baumeßtechnik PLUMB WIRE DEVIATION PROBE GLAS-1

Type: GLAS-0.5 (1) Art. No.: 82.90

• robust • easy to handle • mechanical function • no electronics

• comprehensible system • high precision • can be used in tubes up to

Ø150mm

The plumb deviation probe GLAS has been developed for recording of horizontal movements and deformations of pipings of deeply founded floating plumb anchorings. Floating plumbs in adequate execution can be measured in several levels. A number of electronic and manual measuring instruments are available for this purpose. As result, you will get the statement of construction movements in the two measuring axes, referred to the anchoring point of plumb wire. When using a floating plumb, however, the movements arising below the foundation base of construction, are and remain unknown. For this reason, the anchorings for floating plumb are arranged deeply below the foundation base, up to 1.5-fold of the wall height and iin geologically secured range below boundary surfaces and interference areas. By the arrangement of inclination measuring levels, it is possible to record the movement course in the underground for compensation purposes, for which – however – a further boring is required which must not really correspond to the presuppositions and influence of the plumb boring. In order to separate the behaviour and influence of underground from pure construction deformation, it is absolutely necessary to record the deforma-tions by measuring method from foundation base till anchor point of plumb wire. The plumb deviation probe has been developed for this application which allows to record the arised horizontal movements in the plumb wire piping by means of inclination sensors. By centrical, precise guide of the plumb wire in the probe, it is also possible to record the plumb wire deviation by means of the installed electronic- or manual measuring instruments. Figure 1: The assemblage of measuring equipment is shown in the presentation opposite. The plumb deviation probe is following the position of piping. The thus resulting inclination measuring values are recorded as traverse in measuring steps of same length. Thus, the position of piping and its change during sequence measurements can be represented with high precision. At the same time, the deviations at plumb wire can also be recorded with the electronic measuring device, either abundantly or as single solution.

Floating vessel

Electronical plumb wire

Plumb wire positionmeasuring device

Measuretape reel

Probe

Constr.base

Anchor point

measuring device

Interfer. area

Rock

Rock




Description: The plumb wire deviation probe is available in lengths of 0.5 and 1 m. The probe is equipped with two triple roller guides which are operating restricted guided. By this, it is secured that the probe is guided exactly concentrically and also is leading the plumb wire centrically in the piping. For this purpose, the probe is notched so that the plumb wire is passing the probe unimpededly and is only guided and deviated by the centrical roller guide according to deformation of piping. Measurement: The probe is inserted into the piping guided by plumb wire. The guide rollers of the plumb wire, which have to be correlated to the diameter of wire, are closed and the probe is lowered down to the boring base by measure tape. For probes with inclination sensors, this is done by the measuring cable. The first measuring point is located in a selected depth and is displaced by a probe length towards the top after recording of deviation. The damping of measured value can be followed up at the inclination sensors resp. at electronic plumb wire measuring device. In order to receive a higher measuring accuracy, it is recommended to repeat the measurement, if possible in the same measuring direction. Technical data: Probe length without inclination sensors type GLAS 86/140/ 0.5 m long type GLAS 86/140/ 1 m long Probe as before, but equipped with inclination sensors, with the designation GLASN (N as addition) Tube diameter standard from 86 up to 140 mm; further dimensions on request Meas. accuracy at repeated double measurement better 0.2 mm each meas. step at high quality and correctness of piping Material of probe brass chromium-plated Weight approx. 3.5 kgs Required tube excess length to fixing of measure tape reel 200 mm Measure tape reel with gear reduction and locking brake equipment Measure tape length 50 m Figure 2, on the left: Plumb wire deviation probe complete with 2 pcs. triple roller guides forced centered

Figure 3: Head part of probe with roller guide for centering of plumb wire

Figure 4: Head point of probe with triple roller guide and traction rope connection

Figure 5: Base of probe with triple roller guide


GLÖTZL Baumeßtechnik VECTOR PLUMB SYSTEM, biaxial Model with permanent output of measured values Art. No.: 82.50 Type: CL50 Model with additional data storage unit Art. No.: 82.55 Type: CLS50 CL50/CLS50 • High measuring accuracy and long-term stability • Resolution 0.01 mm • No counter-effect to plumb wire • No restriction of manual meas. • Outputs:

- RS485-bus - optional 4...20 mA or Vibrating wire compatible - Alarm outputs

• Integrated temperature meas. • Illuminated local display

CLS50 • Operation mode programmable • Storage for 4.000 measured values • Time start program from 10 seconds on up to daily • Internal XY adjusting to construction axis Application The optoelectronic vector plumb is used for automatic measurement of conventional (wire) pendulum- and floating plumb systems and furthermore for wire alignments which are normally measured manually (optically). A particular advantage is the use at difficultly accessible locations, e.g. at shafts. The system can be used as simple local measuring instrument with display on site or it can be connected to a central measuring station. The utilized output signals are allowing large line lengths without measuring errors. Optionally, it is suitable as mobile measuring device for temporary applications. The electronic unit can be fitted without any problem with a distance of up to 20 m from sensor head.

Description The plumb measuring device is operating two-dimensionally contactfree and without counter-effect according to a vectorial measuring procedure on the base of optoelectronic sensors. The plumb wire serves as measuring object. An additional measuring hull is not necessary. By the low overall height, the sensor head is not disturbing the manual measurement by means of coordimeter. By means of a microcomputer, the measured values and state information are gained from the

optical signals, and the exact x- and y-coordinates of the plumb wire are computated in the measuring level. The indication of the coordinates is done on display on site. Following, the values are con-verted into a vibrating wire compatible frequency signal (or 4...20 mA signal) and can then be measured with a hand measuring device like a conventional vibrating wire transducer on site (or 4...20 mA sensor), or can be transmitted to a measuring station via cable connection.

Additionally, a bus-compatible RS485 connection is existing. By this, it is possible to interlink the instruments. The CLS50 is carrying out its measurements time-controlled and in an independent way. The measured values can be read out by bus (GMS7 – Glötzl-system), or Laptop/Palmtop, optionally by modem, and at any time also during running measurements. The current supply can be done either via mains (230 VAC) or by a collecting line (24 V).




Measuring head CL50 / CLS50

1-wire acquisition unit 2-wire models

By the low overall height, also 2- and 3-wire acquisitions with small wire distance are possible without any problem.

Technical data type CL50 I CLS50 Measuring range 50x50 mm Resolution 0,01 mm Accuracy under reference conditions ± 0,05 mm Operating temperature range 5-35 °C Output RS485, GMS7-sensor bus VW, 642...1.000 Hz vibrating wire compatible (option) 4-20 mA (option) Alarm: 2 potential free contacts All outputs installed galvanically separated Overvoltage protection 2,5 kA Maximum cable length VW: max. 5.000 m I ----------- RS485: max. 1.200 m 4-20 mA: max. 2.000 m Storage for meas. values ----------- I 4.000 meas. values with date and time ----------- I Automatic time start program Supply/current consumption 230 VAC/80 mA, optional 24 VDC/500 mA Weight: Sensor unit approx. 6,0 kgs Electronic unit approx. 1,2 kg Dimensions: Sensor unit approx. 180x180x100 mm Electronic unit approx. 250x220x120 mm Options ----------- I with integrated temperature measurement


3-wire model

180mm.80

180m

m.

Console

50

65 50

Receiver

Sender

100m

m.

Top view

Lateral view

Meas. rangefor plumb

wire

Unit 1

Unit 2 Unit 3

Insruments arranged on top of each other

60

50

50

Unit 2Unit 1

Unit 1 Unit 2

160

Instruments arranged side by side

Instruments arranged on top of each other

Wire distance minimal

Wire distance minimal


GLÖTZL Baumeßtechnik ELECTRONIC PLUMB MEASURING SYSTEM two axes

• High measuring accuracy and long-term stability

• Resolution 0.01 mm • Automatic tangential correction • No restriction of manual

measurement • Outputs:

- Vibrating wire compatible - RS485-Bus - 4...20 mA (optional)

• For cable lengths up to: - 2 km (vibrating wire comp.) - 1.2 km (RS485)

• Illuminated local display

Application The electronic plumb measuring system is used for automatic measurement of conventional (wire) pendulum and floating plumb systems which are otherwise measured manually (optically). Of special advantage is theapplication at not easily accessible locations, e.g. shafts. Several measuring levels at one plumb wire can berealized. The system can be used as simple local measuring system with on site display or can be connectedto a central measuring station. The used output signals are allowing large tubing lengths without measuringerrors.

Type: LL02-25Art. No: 82.60.01

The plumb meas. system isoperating acc. to the triangula-tion procedure by means oflaser. A measuring body(Ø 100 ... 200 mm) which hasto be clamped to the plumb wireis rectangularly scanned by two sensors and the distance ismeasured. The meas. body isconstructed in such a way that itdoes not disturb an add. opticalcontrol by coordimeters.

By a micro-computer the dia-meter and angle portions areeliminated from the raw valuesand the exact x and y coordi-nates of the plumb wire areobtained in the measuring level.The indication of the coordi-nates is done on a display onsite. Then the values are con-verted into a frequency signalwhich is vibrating wire com-patible (or into a 4...20 mA signal) and can then be

measured like a conventional vibrating wire transducer (or 4...20 mA sensor) by a manual measuring instrument on site or can be transferred to a measu-ring station by means of a sensor cable. Additionally, a bus-capable RS485 connection is existing. Thus, the instru-ments can be used cross-linked. The power supply can either be done by mains (230 VAC) or by collecting line (24 V).

Description




Measuring Principle Laser Plumb

Meas. body

Plumpwire

Laser y

Sensorunit

Laser x

Measuring principle laser plump

Pendulum plump measuring point with electronic plump measuring system

Technical Data Type LL02-25

Measuring range 20 x 20 mm (opt. 40 x 20 mm)

Resolution 0.01 mm

Accuracy 0.1 mm, opt. 0.05 mm

Operating temperature range 0 ... 60 °C

Output - VW, 642...1000 Hz vibrating wire compatible

- RS485, bus capable - 4 ... 20 mA (option) all outputs galvanically

separated

Overvoltage protection built-in, 2.5 kA

Maximum cable length VW: 2000 ... 5000 m RS485: max. 1200 m

Supply/current consumption 230 V / 40 mA, optional 24 V DC / 250 mA

Weight: Sensor unit 3.0 kgs Electronic unit 1.2 kgs

Dimensions: Sensor unit approx. 255 x 255 x 80 mm Thickness of basic plate: 15 mm Thickness of laser sensor: 30 mm Electronic unit approx. 250 x 220 x 120 mm Combined floating and pendulum plump measuring point

with electronic plump measuring system type LL02-25



PLUMB WIRE POSITION MEASURING DEVICE optical

Type: GLPM-ODL 100/150 Art. No.: 82.70

• Digital display • Capacitive, absolute meas. system • Installed illumination • Glötzl hanging system

The GLPM-ODL is used for measurement of X- and Y-directions of a plumb wire. A console, mounted at the construction, serves as basis on which the GLPM is precisely fitted in a ball attachment for measurement. The plumb wire is optically recorded and the position is measured at digital caliper gauge. An automatically switching off illumination is installed for measurements at not sufficiently lighted measuring points. The caliper gauge has a unique adjustment of the zero point position till battery change. String plate The string plate is offering several possibilities to localize the plumb wire:

• Vertical axis for adjustment of the optics parallel to plumb wire (1) and plumb wire recording by central point determination

• Meas. key, centrically adjust plumb wire (2)

• Meas. strip for determination of central position (3)

• Labelling for exact focussing of optics (4)

Technical data Meas. range: X100 mm / Y150 mm Display: digital Resolution: 0.01 mm Accuracy: 0.1 mm Installed illumination: Spare battery type 3 V CR2477N Caliper gauge: Permanent zero point position, spare battery type 1.5 V SR44 Reading: metric Standard optics: X-angle optics Y-straight optics .

124 3 1 2 3 4

BaumeßtechnikGlötzl

2 3

41

2




150mm.

250m

m.

Centre wirecourse

340mm.

250m

m.

105mm. 105mm.

205m

m.

25m

m. 15

5mm

.

140mm. 140mm.

22mm.

Fig. 1: Assemblage of meas. console Fig. 3: Attachment of meas. console Fig. 5: Attachment of meas. console Fig. 6: Top view

Fig. 02: Calibration console GLK 280PK3

Fig. 04: Meas. console GLK 280K

Mea

s. ra

nge

± 50

mm

55mm. Meas. range± 75 mm 55mm.

Meas. distance150mm.

Mea

s. d

ista

nce1

00m

m.

340mm.

50m

m.

50mm.

300m

m.

Ref

lect

or

60m

m. Reflector

100m

m.

100m

m.

300mm.

50mm.

25m

m.

280mm.Apron

Areavectorplumb

Centre top view

max. 200mm.

Compound anch. rod M20

Stabilizing plate

100mm.

to max. 400mm.

100mm.X100mm.



ALIGNMENT WIRE POSITION MEAS. DEVICE 1 Measuring axis, optical with Glötzl suspension system

Type: ALPM-ODL 150 Art. No.: 82.75

• Digital display • Capacitive, absolute meas. system • Installed illumination • Glötzl suspension system

The ALPM-ODL is used for measurement of X-axis of a a plumb wire. Basis is a console mounted at the construction, on which the ALPM is precisely hinged in a ball casing. The plumb wire is optically recorded and the position is read off at the digital caliper gauge. For measurement at not sufficiently illuminated measuring places, an illumination is installed which is automatically switched off. The caliper gauge has an unique adjustment of zero point position till battery change. String plate The string plate is offering several possibilities to localize the plumg wire:

• Vertical centre line for adjustment of the optical device parallel to plumb wire (1) and plumb wire recording by determination of central point

• Measuring key, adjust plumb wire centrically (2)

• Measuring strip for determination of central position (3)

• Labelling for exact focussing of the optical device (4)

Technical data Measuring range: X ±75 mm (150 mm) Indication: digital Resolution: 0.01 mm Accuracy: 0.1 mm Installed illumination: Spare battery type 3 V CR2477N Caliper gauge: Constant zero point position, spare battery type 1.5 V SR44 Reading: Metrical Standard optics: X-angle optics .

124 3 1 2 3 4


2 3

41

2




250

Maße in mm

15,5

17

260

250

5510

0

100 100

17

15,5

30

17 45

30

25

5

20

20

M12

Fig. 1: Assemblage of measuring console

Meas. range 150mm.100mm.

± 75 mm

Centre lens

372mm.

Min. distance to object 78 mm

Fig. 2: Lateral view ALPM-ODL 150 Fig. 3: Front view ALPM-ODL 150

17

17

1 2 431234

Baumeßtechnik Glötzl

225mm.

130m

m.

52mm.

25x25mm.

Centre lins

260mm.

250m

m.

Min. distance toobject 78 mm

Version: 23.07.2004 / SP / P082.00.00.00.00.004R01.doc



( +49 (0)721 51 66 - 0 · Ê +49 (0)721 51 66 - 30 · ü http://www.gloetzl.com · � [email protected] © Glötzl Gesellschaft für Baumeßtechnik mbH

ALIGNEMENT-DRAHT-POSITIONS-MESSGERÄT 1 Messachse, optisch für Freiberger Konsolensystem

Typ: GLPM-1AF 170 Art.-Nr.: 82.80

• Digitale Anzeige

• Kapazitives, absolutes Messsystem

• Eingebaute Beleuchtung

25436

190

60

250

90

60

Messweg 170mm

Abb: Vorderansicht

Abb: Draufsicht

Abb: Seitenansicht

Lotdraht

110

65

124 3 1 2 3 4


Advanced Solutions

DISTANCE AND EXPANSIONTransducer D

ISTA

NC

E A

ND

EX

PA

NS

ION


Plastic Rod Extensometer GKSE >

Plastic Rod Extensometers GKTE >

Packer Anchor of Fleece GKSE >

Plastic Rod Extensometers GDEX >

Plastic Rod Extensometers GRSE >

Fissurometer F >

Plastic Rod Extensometers for rock >

Fissurometer 3D >

Displacement Transducer GWW >

Mechanical Fissurometer for Remote

Monitoring in Rock MFS >

Displacement Transducer GWD22 >

Displacement Transducer GWD >

Displacement Transducer GWD20 >

Displacement Transducer GWLO22 >

Fissurometer GFD >

Displacement Transducer GWW Ex >

Vibrating Wire Strain Transducer for

Concrete GFVM >

Fissurometer GSFW >

Measuring Anchor MA >

Steel Strain Gauges GFVM >

Measuring Anchor for Swellex >

Measuring Head for Measuring Anchor >



PLASTIC ROD EXTENSOMETERS

Type: GKSE 16 Type: GKSE 12 Art. No.: 60.01 Art. No.: 60.02

The plastic rod extensometer, system GLÖTZL. type GKSE 16 (12), is a further development of the conventional rod extensometer. A new technology and mainly plastics as material have been used to develop an instrument which is adapted to the operation on site. Construction: The plastic rod extensometer mainly consists of the following components: - Measuring head with adjustable connection - Measuring rods, glass fibre rod with plastic coating, PEHD casing tube - Anchor point of ribbed steel (standard) - Optional fleece packer anchor or hydraulic anchor system Super Swellex Figure.: Single extensometer GKSE 16 Function: The relative movement between anchor point and measuring head is measured. For this, these

parts are normally anchored in the borehole by means of an injection. Application: Measurement of settlements, displacements and deformations in

- Tunnel construction - Mining - Slope stabilization - Dam construction - Underground control - Construction control

Advantages: Delivered in completely assembled condition

- No assembling work at the extensometer necessary on site - Low costs for installation - Very short installation time - No transport problems - Detacheable measuring head for recovery - High measuring accuracy by small friction losses of the glass fibre rod and insensitivity against differential settlements - Measuring head foldaway in borehole - Elongations and shortenings, e.g. for expansion in tunnel construction - Small weight, e.g. for overhead assembly

Figure: Measuring head

Figure.: Extensometer in packed cond., mounted for installation, winded up in a reel of approx. 1.2 m dia.


A

CD

Protection cap Ø 26 mm Ø 20 mm

GKSE 16 GKSE 12

Meas. head:

2. Assembl. plate for single-/ multiple heads

3. Measuring connection, adjustable with adjustment sleeve

1. Counter nut

4. Extensometer head, hexagon, SW =

5. Threaded rod

6. Grooves for concrete compound

7. Connection sleeve

A. Meas. point

B. Measuring length adjustable with threaded rod

C. Measuring rods

D. Dimension

+/- 60 mm +/- 25 mm

27 mm 17 mm

M 8

P060.01SB01.vsd

M 5

B

Measuring rods

1. PEHD casing tube

3. Protection cover2. Glass fibre rod

Anchor point1. Elastic connection casing tube - anchor

2. Anchor rod Ø = length = of ribbed steel

Ø 22 mm500 mm

Ø 14 mm500 mm

Measurement manual

1. Depth gauge with nonius, resolution2. Mechanical dial gauge, resolution

3. Electric displacement transducer with digital measuring device

Remote control

4. Electric remote control with displacement transducer

0 - 1000 mmstandard

50 / 100 and 250 mm

+/- 0.1 mm+/- 0.01 mm

0 - 250 mm

Glass fibre rod and PEHD casing tubewinding diameter 1 m +/- 60 mm

Total length = measuring lengthMin. length 1 m, max. length = 30 m50 m

Ø 16 mmØ 9 mmØ 11 mm

Ø 12 mmØ 5 mmØ 7 mm

Construction of Plastic Rod Extensometer


Figure: 6-fold extensometer with assembly plate and plastic holders

Figure: 6-fold extensometer head, type GKSE 6/16, consisting of single extensometers with assembly plate for installation in boreholes

Figure: 6-fold extensometer head, type GKSE 6/16, consisting of inclination measuring tube with 6 single

extensometers, foldaway assembly plate for installation in boreholes. For fixing the extensometers around the inclination measuring tubes, corresponding plastic holders are available.

Figure: 6-fold extensometer GKSE 6/16, consisting of 6 single extensometers with assembly plate

1. Technical data – Rod Extensometer

Recommended installation position max. executed

GKSE 16 100

(250)

GKSE 12 30

(50) 1.1 Extensometer rods glass fibre core with plastic covering,

thermal expansion coefficient 5x10-6/ K K

Ø11 mm Ø7 mm

1.2 Casing tube PEHD Ø16x2 mm Ø12x2 mm1.3 Measuring length standard min. 1 m max.

100 m max. 30 m

1.4 Adjusting range of measuring connection +/-60 mm +/-25 mm 1.5 Transmission accuracy 1–20 m

up to 50 m up to 100 m

0.02 mm 0.10 mm 0.30 mm

0.02 mm - -

1.6 Extensometer head SW 27 SW 17 1.7 Assembly plates 2–13-fold in foldaway and placed-on execution 1.8 Necessary borehole diameter (clear installation

diameter) without consideration of injection and aeration lines

1 2-3 4

5-7 8-13-fold

≥ 35 mm ≥ 60 mm ≥ 86 mm ≥ 101 mm ≥ 131 mm

≥ 25 mm ≥ 50 mm ≥ 60 mm ≥ 75 mm ≥ 110 mm

1.9 Weight of extensometer rods, PEHD casing tube and glass fibre core, 1 m 0.3 kg 0.2 kg

2. Technical Data – Readout Units 2.1 Depth gauge with nonius, meas. range 50 mm resolution 0.1 mm Accessories: Key for counter nut, adjusting tool for measuring connection

2.2 Mechanical dial gauge, meas. range 30 mm resolution 0.01 mm

Accessories: Calibration standard, key for counter nut, adjusting tool for measuring connection, transport case

2.3 Digital readout unit, meas. range 50 mm resolution 0.01 mm

Accessories: Calibration standard, key for counter nut, adjusting tool for measuring connection, transport case





Standard Measuring Equipment GEM 30 - Mechanical dial gauge, resolution 1/100 mm - Measuring range 0–30 mm - Calibration standard, adjusting tool for measuring

connections - Key for attachment of measuring head - Key for protection cap

Transport case of aluminium with foamed plastic inlet

Digital measuring device GED 50 The digital readout unit is battery-operated and equipped with a LCD display. The main advantages, comparedwith a mechanical dial gauge,are:

- Reading errors are avoided. - At difficultly accessible places, the position of the measuring connection is recorded, the instrument is

removed and read.

Technical data: Measuring range 0–50 mm, resolution 1/100 mm Accessories: Calibration standard, adjusting tool for measuring connection and protection cap,

transport case of aluminium

Fig: Head plate for extensometer GKSE16 with assembled displacement transducer GWW (single extensometer) with protection tube cover ∅ 90 mm, length = 46 cm

Fig: Head plate with displacement transducer GWW for multiple extensometer with protection tube cover ∅ 126 mm, length = 53 mm (up to 5-fold extensometer)

Extensometer and Accessories

Assembly plate, lockable in sizes for: 1 - 6 heads 7 - 9 heads

Figure: Shows complete extensometer, ready for installation, length 30 m, weight 12 kgs

Extensometer ready for delivery, winded up with a diameter of 1–1.2 m



PLASTIC ROD EXTENSOMETER COMPACT MODEL FOR TUNNELS AND CAVERNS System Glötzl

Type: GKTE 16 Art. No. 60.10. .

Technical data, type GKTE 16 Extensometer rods glass fibre core Ø 11 mm with plastic covering of polyamid Thermal coefficient of expansion 5 x 10-6 / K Casing tube PE Ø 16 x 2 mm Measuring lengths 0.5 to 100 m Measuring range ± 50 mm Adjusting range standard ± 70 mm Transfer accuracy 0.5 to 20 m appr. 0.02 mm up to 50 m appr. 0.10 mm up to 100 m appr. 0.30 mm Weight of rods with casing tube 0.3 kg / m Available diameters of measuring head Ø 70 / 90 / 114 mm

Figure: 4 pcs. of totally assembled extensometers with telescopic measuring head, aeration and cementation lines and metal packer for setting and sealing of measuring heads. Connection-change-over boxes with connection lines and electric displacement transducers in the measuring heads.

Description The extensometer is used for measurement of relative movements between anchor point and measuring head. Models are availabe for borehole diameters of 70, 86 and101 mm. The measuring heads can be equipped from one upto six measuring points and with cementation and aerationlines dependent on kind of installation. Measurement of extensometer can be done: Manually with a dial gauge or digital measuring unit or byremote control with electric displacement transducers. Measuring job: Measurement of settlements, displacements and deformationin tunnel construction, mining, cavern construction, slopesecurity, retaining dam construction, underground control andgeneral construction survey.

Application The plastic rod extensometer GKTE 16 as compact measuring unit is a modified further development of the wellknown Glötzl standard glass fibre rod extensometer, type GKSE 16. This extensometer has especially been developed for a quick installation in tunnel and cavern constructions. Different models are available according to field of application.

• Compact model with different measuring heads • Measuring rods of glass fibre with PE casing tube • Supply of totally assembled model • Short installation time, by this only small construction impediment • Corrosion-resistant with high measuring accuracy • Model tight against pressure water • Measuring head immersed in borehole and integrated displ. transducer • Can be equipped/upgraded from manual measurement to remote control • Proved and successfully used system


,

Figure above: Installation of an extensometer in a tunnel, horizontal and vertical Figure left: Extensometer 3fold, head point telescopic model for insertion of

displacment transducers for remote control and hydraulic packer

Article No. Type Meas. head Kind of Borehole/ Extensom. Meas. Core-Ø model [mm] Extensometer Ø 70 mm, max. 3fold model 60.10.0X.00 GKTE16SM70 standard manual 86/72 1 – 3fold 60.10.1X.00 GKTE16PM70 packer manual 86/72 1fold 60.10.0X.WW GKTE16SW70 standard displ.transd. 86/72 1 – 3fold 60.10.1X.WW GKTE16PW70 packer displ.transd. 86/72 1fold Extensometer Ø 90 mm, max. 5fold model 60.10.4X.00 GKTE16SM90 standard manual 116/102 1 – 5fold 60.10.5X.00 GKTE16PM90 packer manual 116/102 1 – 4fold 60.10.4X.WW GKTE16SW90 standard displ.transd. 116/102 1 – 5fold 60.10.5X.WW GKTE16PW90 packer displ.transd. 116/102 1 – 4fold Extensometer Ø 114 mm, max. 6fold model 60.10.6X.00 GKTE16SM114 standard manual 131/117 1 – 6fold 60.10.7X.00 GKTE16PM114 packer manual 131/117 1 – 6fold 60.10.6X.WW GKTE16SW114 standard displ.transd. 131/117 1 – 6fold 60.10.7X.WW GKTE16PW114 packer displ.transd. 131/117 1 – 6fold .X Acc. to borehole diameter indication of measuring rods 1 up to max. 6fold, 1, 2, 3, 4, 5 and 6 .00 for manual measurement with dial gauge or electric tracer .06 for WW, displ. transducer with 60 mm measuring distance .10 for WW, displ. transducer with 100 mm measuring distance .25 for WW, displ. transducer with 250 mm measuring distance


Connection unit with complement resp. expansion elements

AKE1

E2

E3

E4

MQ E1 till E4

Field officeConnection box (AK) formanual measurement andoptional extension withmultiplexer

MFA

Modem Expert

GLA7Evaluation software

ModemPC

Telephone lineGlass fibre

Summary of somemeasuring cross sections

GLA7 Evaluation software

ModemPC

1 20

01 10

11 20

MU 20 D

C

Connection box for manual measurement type AKE20 for max. 20 measuring points Measurement with readout unit VMG14.1 or FMG01-2 Meas. points individually to be plugged-in

Additional unit for connection box Manual selector for 20 meas. points attach-able

Multiplexer unit as additional equipment for connection box for remote control by automatic measuring device MFA6 or direct operation with field measuring station

AMFF field measuring station as complement of the connection box with independent data recording and battery mains operation – net-work capable model available

Design configuration of a data remote transfer to field office and to expert/joint venture

Figure above: Readout unit FMG01-2 without data storage, to the left Readout unit VMG14.1 with data storage, to the right Figure right: Automatic measuring device Typ MDL 41, fieldversion with accu operation and modul GSM




Subject to technical alternations!

Figure.: Measuring head with hydraulic packer and protection tube for insertion of displacement transducers, immersed model in borehole

Extensometer head with splash-proof displacement transducers, special model for extensometer, type GKSE16

Figure: Displacement transducer for extenso-meter, low-price model, splash-proof Mechanical control measurement at tracer finger possible and provided Resistance strip 4,7 kOhm Measuring accuracy ± 0.1 mm Meas. value resolution ± 0.05 mm Art.No.: Type Meas. distance 65.12.10 GWLO 22/60 60 mm 65.12.20 GWLO 22/100 100 mm 65.12.30 GWLO 22/250 250 mm

For a pressure water-proof model of measuring head the extensometer head is filled with an elastic plastic ass hydraulic barrier. The possibility of adjustment and the exchange of displacement transducers are preservedd without limits.

Extensometer head standard for electric field measurement without metal packer

Extensometer head standard for manual measure-ment without metal packer

EX-Lötschbergtunnel.vsd

Extensometer head with metal packer for manual measurement


Extensometer head with metal packer for electric remote control


Available extensometer models for borehole diameters 70, 90 and 114 mm


GLÖTZL Baumeßtechnik PLASTIC ROD EXTENSOMETER System GLÖTZL, Packer Anchor of Fleece

Type: GKSE 16 Art. No.: 60.01.06

Functional Mode: The packer anchor consists of a thin-walled steel pipe, length 1000 mm, with fleece coating. By ce-ment injection of the annulus between steel tube and fleece material, the fleece coating is expanded and thus pressed tensionally locked against the bore hole wall. By the filter effect of the fleece, the compact cement parts are retained in the packer and set, while the water of the injection material can flow off by the fil-ter. The fleece avoids the loss of injection material in the fissured rock. The rods and injections lines of the deeper posi-tioned anchor points are led through the interior of the packer.

Filling of Bore Hole: Despite of contrary philosophies of other manufac-turers, we recommend the filling respectively the in-jection of the bore hole between the extensometer head and the anchor points with suitable material. An open bore hole run the risk of dipping so that - over some time - uncontrolled cross movements of the free measuring rod may occur and therefore may also impair the measuring results.

Anchor point in grouted condition

Extensometerhead withassembly plate

Anchor packer

Fleece coatingexpandable

PVC casing tubeØ16 mm inner,Glass fibre coreØ11 mm

Injectiontube

Fleece

Extensometerrods

Steeltube

Technical Data of Tube fleece packer anchor

Tube fleece packer anchor Opening for

measuring bars [quantity] Ø

[mm] Length [mm]

Required borehole diameter

[mm]

1 70 700 86 max. 3 90 1000 114 max. 5 114 1000 131

All Tube fleece packer anchors can optionally be supplied with a tube fleece diameter of 100/160/200/250 mm.





[bar]

HYDRAULIC ANCHOR for EXTENSOMETER SYSTEM GLÖTZL (GKSE 16)

Type: SEA Art. No.: 60.06

Basing on the system of the SWELLEX anchor of AtlasCopco, Glötzl has developed a new instru-mentation technology which includes the advan-tages of this anchor system. The basic principle is a folded tube which has been modified for the meas-uring and installation instruments of Glötzl which are important for tunnelling.

Main advantages compared with conventional in-struments:

- Immediate availability resp. measuring standby

- Uncomplicated installation in all measure-ment positions and directions

200

100

0

F A VP092BG01.vsd

Guiding values: F - Filling of anchor part A - Expansion of anchor till contact with rock V - Injection to the rock

- Shortest installation time in minutes without mortar or plastics

- Standard boreholes acc. to instrument 32-52 mm

Tunnel profile

Inject head point or installwith quick-setting cement

Pump

Dial gauge

Water

Anchor point

Conception of the SWELLEX system uninjected injected

Load diagram for SUPER-SWELLEX

Hydraulic anchors in connection with the Glötzl glass fibre rod extensometer GKSE 16 are optimal instrumentations for installation on site with imme-diate measuring standby. This is most important in case of strong water entry and a high degree of fissures of the rock where common cementations may be problematic. For strongly aggressive water up to a pH-value of 14, coated anchors in special construction are available.

Grouting line Super-Swellex-anchor Head part

Gouting length

Extensometer-rod connection

BLALFL

Models L = BL FL AL Drill. Ø Weight Article

[mm] [mm] [mm] [mm] [kg] No.:

SEA 32/700 700 200 300 32-39 1,2 60.06.01

SEA 32/900 900 200 500 32-39 2,4 60.06.02

SEA 43/700 700 200 300 43-52 1,4 60.06.11

SEA 43/700 900 200 500 43-52 2,8 60.06.12

The anchor part consists of a folded steel tube which is expanded after installation in the borehole by water pressure. Thereby, the outer casing get in contact with the rock and is deforming itself corre-sponding to the unevenness. Thus, a high-resistant and permanent contact with the rock is granted. An essential advantage compared with the already known procedures is the immediate application readiness without cement and plastics or working procedures as tensioning and striking.

Installation instruction: The hydraulic anchor is screwed on the completely assembled and delivered extensometer. Insert anchor part in borehole to required position. Press on anchor part by special connection with hand pump or motor pump. Required pressure see diagram at the left. After reaching the final pressure, a secured and high-loadable compound is given by the inherent stiffness of the expanded steel rube and contact to the unevenness of rock.

Version: 15.01.2003 / IG / RA / P060.60.00.00.00.001R01_engl.DOC

GLÖTZL BaumeßtechnikWIRE EXTENSOMETER

Type: GDEXArt. No.: 60.60

The wire extensometer is used for movement and convergence measurements in a free area between fieldand rocky fissures resp. also between construction parts.

Measuring principle:

A stainless steel wire is prestressed betweentwo fixed points (e.g. cemented bolts) by meansof a tension weight. The changes in length anddistance between the fixed points are recordedby a distance measurement at the tensionweight.

Normally, an electric displacement transducerwith remote control and with option of an auto-matic recording is used for measurement. Alter-natively, also a manual measurement with a dialgauge is possible if the anchor point is accessi-ble in the area and a continuous measurementis not necessary.

By the simple principle of the wire extensometera recording of large movements in the ranges ofdecimeters and meters are possible as thelength of wire can be adapted quickly and dy-namically.

Ro

ck

ab

utm

en

tr

Ro

ck

ab

utm

en

t

P060.60-Dr-Ext.vsd

Tension lock with

hook and eye

Fixing anchor

VA steel rope

Return

pulley

Displacement

transducer

Security

screwBasic tube

Fixing anchor

Ro

ck

ab

utm

en

t

Ro

ck

ab

utm

en

t

P060.60-Dr-Ext_engl.vsd

Tension lock with

hook and eye

Fixing anchor

VA steel rope

Return

pulley

Displacement

transducer

Security

screwBasic tube

Fixing anchor

Version: 15.01.2003 / IG / RA / P060.60.00.00.00.001R01_engl.DOC

GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten·Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected]


Information for ordering

60.60.01 Basic tube of VA steel Ø 102 / 94 mm,length=1000 mm for housing and guidanceof tension weight, housing of displacementtransducer, mounted movable and inclinableanchoring head with return pulley for steelrope, adjusting device for height adjustmentof displacement transducer

60.60.11 Fixing anchor for basic tubel= 500 mm, Ø 20 mm(opposite side),l= 350 mm, Ø 20 mm

60.60.11 Fixing anchor with eye for steel rope

60.60.13 Tension weight of VA material, Ø 90x200 mm,with suspension hook for steel rope

60.60.14 VA steel rope Ø 3 mm, availabe in required lengths,with eyes and snap hook for hanging

60.60.15 Tension lock with hook and eye

65.xx.yy Displacement transducer with resistivity element on requestin different measuring ranges from 40 up to 400 mmas passive model or also with installed amplifier

74.01.11 Readout unit FMG 01-2 with accu operationand charger, 2 channel instrument for displacementand optional temperature

50 / 51 Automatic recording device as field versionwith accu operation or mains operation onrequest


GLÖTZL BaumeßtechnikTUBE – ROD EXTENSOMETERfor temporary and stationary installation in constructions

Type: GRSE 86/60Art.-No.: 60.50..

Regainable system with mechanical clamp

anchor, setting by means of measuring rods

Compact execution, 1-6fold extensometer

Measuring rods of stainless steel tube

Short installation time, small construction

impediment

Corrosion resistant and high meas. accuracy

Measuring head on the borehole or

submersible

Can be equipped or upgraded from manual

measurement up to remote control

Proved and successfully used system

DescriptionThe tube rod extensometer can be used formeasurement of relative movements betweenanchor point and measuring head. Transfer otmeasuring values is done by stainless steel tubeswith different diameters sliding into each other.By turning of single anchor rods, the anchors arewired or released when dismantled. A model forborehole diameter of 86 mm is available. Themeasuring heads can be equipped from 1 up tomax. 6 measuring points.

Measurement of extensometer can by done:Manually with dial gauge or with digital measuringunit or by remote control with electric displacementtransducers of our multiplex delivery program.

Figure:3fold extensometer, type GRSE 86/60, with clampanchor for boring Ø 86 mm. Measuring head withassembly< plate inclusive 3 electric displacementtransducers

Technical data, type GRSE 86/60Boring diameter Ø 86 mmExtensometer rods of stainless steel tube mat. 1.4571

1st anchor 0.60 kg/m Ø 14 mm2nd anchor 0.90 kg/m Ø 20 mm3rd anchor 1.40 kg/m Ø 30 mm

4th anchor 1.90 kg/m Ø 40 mm5th anchor 2.40 kg/m Ø 50 mm6th anchor 2.90 kg/m Ø 60 mm

Thermal extension coefficient 5 x 10-6 / KMeasuring length up to max. 50 m

Anchor with clamping wedge 30° self-locking Ø 82 mmAnchor length 200 mmAnchor with rods unit length 500 mm

Measuring head – anchor plate ofstainless steel Ø 240 x 10 mm

Leading pillars for displ. transducer length 700 mmMeasuring range +/- 50 mmAdjustment range standard any

Transfer accuracy 0.5 up to 20 m approx. 0.05 mmup to 50 m approx. 0.10 mm

bis 100 m ca. 0.30 mm

Application

Main application of the tuberod extensometer is thetemporary use.

By system of regaining, theinstallation is done in non-concreted borings. By this,also a quick installation issecured.

Another important advantagebesides the regaining is theimmediate measuring avail-ability after execution ofboring and installation of theextensometer.

Supposition for the use ofthese extensometers and theregaining is a stable boringresp. surrounding/rocks.Especially for the applicationin tunnel and cavern con-struction this extensometerhas been modified for a quickavailability of meas. values.All construction elements arepreconstructed in the factoryso that a quick installation issecured.In the standard range themeasuring rods of stainlesssteel tube have a basis lengthof 3m.In case of special conditionsshorter tube length areavailable.

Measuring task:Measurement of settlements,displacements and deforma-tion in tunnel construction,mining, cavern construction,slope security, retaining damand general control ofconstructions.


GLÖTZL Gesellschaft für Baumeßtechnik mbH · Forlenweg 11 · 76287 Rheinstetten·Germany +49 (0)721 51 66 - 0 · +49 (0)721 51 66 - 30 · http://www.gloetzl.com · [email protected]


Figures:

Above: Clamp anchor with assembly reels

Right: Measuring head with anchor plate3fold, measuring connections andmounted electric displ. transducer

Displacement transducersee single prospectus

Simple solution with resistance element 5 KOhm65.15.11 Type GWD 22/25 25 mm meas. displ.65.15.21 Type GWD 22/50 50 mm meas. displ.65.15.31 Type GWD 22/100 100 mm meas. displ.

Below: Meas. head of an extensometer withprotection cap

Art. No.: Type Model Tube length Anchor tube

Complete model, anchor with measuring rods

60.50.10.XX GRSE86/60/1 single XX = [m] Ø 60 mm

60.50.20.XX GRSE86/50/2 twofold XX = [m] Ø 50 mm

60.50.30.XX GRSE86/40/3 threefold XX = [m] Ø 40 mm

60.50.40.XX GRSE86/30/4 fourfold XX = [m] Ø 30 mm

60.50.50.XX GRSE86/20/5 fivefold XX = [m] Ø 20 mm

60.50.60.XX GRSE86/14/6 sixfold XX = [m] Ø 14 mm

Anchor tubes – Measuring rods and rods connections

.11.XX GRSER6 Stainless steel tube single 0.5 up to 3 m

Ø 60 x 2 mm

.12 GRSEM6 Rods connection Ø 60 mm

.21.XX GRSER5 Stainless steel tube 2fold ditto Ø 50 x 2 mm










Head plate

.70 GRSEK6 Stainless steel plate up to 6fold 240x10 mm

.70.01 GRSEF2 Leading pillar Ø 20 x 700 mm long, 3 pcs.

.70.02 GRSEW1 Holding device for displ. transd. up to 6fold

Measuring stops

.81 GRSEA6 Meas. connection for anchor tube Ø 60 mm






Protection tube

.90 GRSES1 PVC protection tube for measuring head

Ø 250 and 800 mm long

Fig.Automatic measuring device in mining for recording of displacementtransducers for extensometer, electric and hydraulic stress cells,temperature cells and further sensors

Version: 08.05.2007/ IG / SP / P064.01.01.00.00.001R02_engl.doc

GLÖTZL Baumeßtechnik FISSUREMETER for CONSTRUCTION FISSURES

Type: F . . . Art. No.: 64.01.01

The fissuremeter for construction fissures consists of two stainless steel angles which are dowelled at both sides of the fissure. By means of a dial gauge, measuring range 50 mm, the change of fissure resp. the distance of both angles is recorded. The standard range between the angles which can directly be recorded with the dial gauge is between 10 and 60 mm. When using an elongation of the trancer finger, a measurement between the angles of 50 up to 100 mm is possible.

30 m

m

Dial gauge0-50 mm

Dowel 6 mm

10-60 mm

(50-100 mm)

60 m

m

P064.01.01SB01.vsd

For fixing of measuring angles, standard Hilti segment anchors, type HSMA 6x65, are used with a borehole diameter of 6 mm and a borehole depth of 60-70 mm. The drilling of dowel holes is done in connection with a drilling template which is available for different system distances.

Technical data: Dial gauge Measuring range 0–50 mm, resolution 0.01 mm Measuring accuracy 0.02–0.05 mm

Article Nos.: 60.01.10.03 Dial gauge, measuring range 0–50 mm, resolution 0.01 mm with transport case 64.01.01 Set of measuring angles, consisting of dial gauge transducer and trancer finger stop with 4

dowels 64.01.01.01 Drilling template for 30/50/70 and 90 mm distance 64.01.01.02 Drilling template for 20/40/60 and 80 mm distance



Type: SKE Type: TEX 16Type: SSME

Art.-Nr: 63.01

P063.01FO01.tif

SPECIAL INSTRUMENTATION in mining for deformation in rock and backfilling

- CONVERGENCE MEASURING INSTRUMENTS - MULTIPLE ROD EXTENSOMETER - SETTLEMENT MEASURING DEVICE

These measuring instruments have been developed for an application under extremely difficult conditions in an underground large-scale test in the „Schachtanlage Asse“ in connection with the „Institut für Tieflagerung*)” in Braunschweig. Requirement was the interpretation of all compo-nents for:

• Rock pressure up to 20 MPa • Centrifugal backfilling with max. grain size

≤ Ø 60 mm • Alkaline solutions up to 160 °C • Temperatures up to 160 °C

Interpretation of test The test TSS thermical simulation of routing bearing is carried out for investigation of thermomechanical effects for direct final disposal of flame-cut LWR fuel elements.

In two parallel routes each three dummies of Pollux containers have been electrically heated. After as-sembly of containers and measuring instruments

the routes have been treated with salt fines in cen-trifugal procedure. Instrumentation with deformation measurement The settlements of the centrifuged backfilling under own weight und later on by convergence pressure are recorded by settlement measuring instruments as distance changes of up to four discrete points in the backfilling referred to the roof ridges. The horizontal and vertical convergences of the backfilling routes are measured with convergence measuring instruments of especially stable construc-tion type. For control of the deformation field in the rock in the surrounding area of 30 m multiple rod extensometers are used with submerged extensom-eter heads. For the computationable temperature compensation, the temperatures at all instruments are recorded.

Recording of meassured data The tubings of all transducers are led through the backfilling into one conduit to the measuring room in which the measured values are recorded by an automatic measuring and recording unit.

*) An institute of the „GSF-Forschungszentrum für Umwelt und Gesundheit“ in Munich


HEAVY STATIONARY CONVERGENCE EQUIPMENT SSKE 40

The heavy stationary convergence measuring equipment consists of solid steel tubes shiftable into each other. The movement of these parts is re-corded by displacement transducers and registrated as electrical signal.

All movable parts are protected by O-ring seals against penetration of fluids and pressure-tight con-structed dependent on requirement. The anchoring is done optionally by anchors solidi-fied in the rock or dowelled anchor plates. The measuring equipment is protected against pre-loading caused by movements of the rock by ball joints between anchor and measuring instrument. By the threaded rod at one side of the instrument the basic length and also the basic alignment of the displacement transducer can be adjusted. The stability of the equipment is ensuring the func-tional security also in case of penetration of the centrifugal set and at static pressure of the backfill-ing material.

Technical data: Measuring lengths: 2/2.5/3/3.5/4/4.5/5/ 5.5 and 6 m Adjusting range: +/-0.25 m Material: Steel ST 52

Temperature ranges Standard: -30 up to +70°C Extended: -10 up to +105°C Maximum: -10 up to +180°C

Measuring ranges for displacement transducers 40/100/200 and 400 mm Measuring signals see data sheets of displacement transducers

P063.01FO02.tif

P063.01SB01_engl.jpg


GLASS FIBRE ROD EXTENSOMETER TEX 16

EXTENSOMETER as special model Application - in ranges with higher temperatures - in unconsolidated border region

Construction of extensometer Pressure-tight measuring head for max. 4 dis-placement transducers, diameter 120 mm, neces-sary borehole diameter 180 mm. The measuring head at the deepest point of borehole as well as the anchors are fixed by means of expansion device.

By positioning of the measuring head in regions apart from the heated routes the influence of tem-perature to the electronics in the measuring head is minimized.

If the joint is only less suitable for the installation of an extensometer anchor by unconsolidation, the anchoring of the head at the deepest point of the borehole ensures that at least the reference to all further anchor points will not be lost.

The preadjustment of the displacement transducers is done by expansion anchors by which also the compound of anchor-rock is ensured. These works are carried out by settlement rods from borehole mouth to any installation direction.

The completion at the borehole mouth is an at-tached anchor plate for the longest resp. the last anchor. Through this plate also the necessary injec-tion and aeration lines as well as the electric meas-uring cable are led.

The measuring rods consist of high-tensile glass fibre rods in a casing tube which can be selected for temperate range up to 80°C of PVC material and for higher ranges of a metal corrugated pipe.

Technical data: Measuring lengths: up to 50 m Material: Steel St 52 Temperature ranges: Standard: up to 70 °C Max. range: up to 130 °C Measuring ranges for displacement transducers 40 / 100 / 200 and 400 mm Measuring signals see data sheets of displacement transducers Diameter of measuring head: Ø 120 mm Necessary boring: Ø 180 mm P063.01SB02_engl.jpg




SETTLEMENT MEASURING EQUIPMENT IN BACKFILLING SSME

The settlement measuring equipment is a modified extensometer with anchor points in the backfilling.

All anchor plates are free movable to each other and without mutual influence.

The 1st anchor plate is used for control of settle-ments in the roof ridge area.

The anchor plates 2 and 3 are recording the settle-ments of the backfilling in two levels of the backfill-ing.

With the 4th anchor plate the route convergence is measured at the floor.

Technical data: Measuring length 2.5 up to max. 6 m Temperature ranges Standard: -30 up to +70 °C Extended: -10 up to +105 °C Maximum: -10 up to +180 °C Measuring ranges for displacement transducers 40/100/200 and 400 mm Measuring signals see data sheets of displacement transducers Measuring head: Ø 120 mm Necessary boring: Ø 180 mm

Measuring lines/electric connection cables for special instrumentation Temperature ranges -30 up to +80 °C -10 up to +105 °C -10 up to 180 °C standard range extended range max. range Temperature max. for a short time +100°C +120°C +200°C Material PVC basis special PVC Silicon Trade mark Ölflex-100 CY Lapptherm 120 Silflex-SiHFP Test voltage 3.000 V 2.500 V 2.000 V Quantity of wires 5-20 wires acc. to numbers of transducers x 0.5 mm2 Cable diameter 5-core 10 mm 20-core 22 mm

P063.01FO04.tif

P063.01SB04_engl.jpg



FISSUREMETER

Type: F 15/3D MBE (C) / MWE (C) Art. No.: 64.02

The three-dimensional fissuremeter is used for recording of spatial movement of two construction parts from one another. The measuring console and the quare of the measuring instrument are fixed, then cemented at rough broken stone by means of bolts or screwed by holding plates on plane surfaces with dowel attachments. The movements are manually recorded with a dial gauge or electrically with displacement transducers in X, Y and Z directions.

Assembly: When using the model F15/3D MB, the fixing is done by means of jointing anchors of threaded rods M12. For an accurate placing, the borings are done by means of a template. For insulating of the anchors the two parts of the fissuremeter are coupled with a holding device. The model F15/3D MW is equipped with plates for dowelling on plane underground.

Technical data: • Jointing width up to max. 100 mm acc. to fixing • Measuring range +1 up to 15 mm in X, Y and

Z direction • Material stainless steel, e.g. MBE (MWE) • Brass, chromium-plated e.g. MBC (MWC) • Measuring accuracy ± 0.02 mm • Resolution of measuring value 0.01 mm

Accessories: + Dial gauge in transport case with calibration standard + Eletric displacement transducer with readout unit or automatic data recording + Exchange elements for enlargement resp. expansion of measuring range




Fissuremeter F15/3D – Technical data and construction Assembly: The fixing for model F15/3D MB is done by four jointing anchors of threaded rods M12.

1. The underground of the installation point must be plane and clean (dimensions of recess min.: H=30 cm, W=45 cm, depth of countersink = 10 cm).

2. On the provided underground the drilling template (assembly template) is placed in plane position and the four drill-holes are marked. Then the holes are drilled with the planned diameter and depth.

3. The assembly template is then positioned in the recess together with the prefitted anchor rods (threaded rods).

4. The anchor rods are fixed with a sealing compound.

5. Injection is done by prefitted tubings and with a syringe which is available as accessories.

After hardening of the injection compound, the assembly template is exchanged by the fissuremeter and can be provided with a protecting cap as protection against external influences. Technical data: Example: Accessories • Jointing width up to max. 100 mm dependent on fixing • Measuring range ±15 mm in X, Y and Z directions • Material stainless steel • Measuring accuracy ±0.02 mm • Resolution of meas. values 0.01 mm • Dial gauge in transport case with calibration standard

• Electric displacement transducer with readout unit or automatic data recording

• Exchange elements for enlargement resp. elongation of measuring range

• Syringe • Protecting cap • Assembly template

Wall assembly model F15/3D MW

Attechment with wall plate by dowels


GLÖTZL BaumeßtechnikELECTRIC DISPLACEMENT TRANSDUCERwith resistivity element

Type: GWW 30/. . .Art. No.: 65.01

The displacement transducer, type GWW, is encapsulated in an eloxed aluminium casing and is equippedwith a plug connector of protection class IP 67 (splash-proof).

The material of the tracer tip is chromium-plated brass. The tracer finger is of rust- and acid-proof materialand led in a brass bushing with an additional ring-type oil sealing.

The complete displacement transducer is constructed as splash-proof model and also partly splash water-and submerging-tight.

For fixing at a structural part the transducer is equipped with a thread M 18 * 1.5.

By means of a screw socket (see figure) the displacement transducer is directly screwed at the measuringhead of the plastic rod extensometer for electric remote control.

Function:

The displacement transducer consists of a conductive plastic resistivity element with shiftable scanning con-tact. The element is operating as an unloaded potential devider and is converting a displacement into a pro-portional voltage. The signal is converted and amplified into a standardized signal by an electronic circuit. It isfed to the output for remote transmission or analog recording. The power supply can be varied in a largerange without influencing the measuring value as voltage references are internally installed.

The displacement transducer GWW has a voltage and current output as standard. When placing an order,please indicate which output has to be calibrated exactly. The second output is automatically existing with anaccuracy of approx. 1% and can be used if required. The displacement transducer GWW is constructed in a2-conductors technique and therefore can only be used as transducer with current signal.

The type GWW has a bipolar output (±2 V, ±20 mA, 4-conductors).

The type GWW I has the measuring signal 4-20 mA (2-conductors circuit).

Accessories:

- Readout units (mains and battery operated)

- Manual change-over manifolds

- Manual change-over manifolds with digital display

- Automatic measuring devices

(mains and battery operated)

- Special models on clients’ specification

Options:

Measuring lengths up to 1000 mm

- Digital output RS 485

- Linearity 0.1% f.s.

- Temperature protocol

- Casings as special models

- Current-output signal on clients’ specification

Figure.: Displacement transducer, type GWW 30/40 with screwsocket for rod extensometer

P065FO02.tif




Technical data: GWW 30/40 GWW 30/100 GWW 30/40 I GWW 30/100 I

Measuring range [mm] 20 50 40 100

Linearity [] 0.15

Resolution [mm] 0.01 (0.001 tendency in one direction)

Temperature coefficient [ / °C f.s.] < 0.01 < 0.01 < 0.01 < 0.01

Supply [V] 20 up to 40 V DC 15 up to 30 V

Current consumption [mA] max. 10 (+20) 4 up to 20

Output signal full meas. length [V] 2 V 2 V --- ---

Burden [K min.] 100 100 --- ---

Output signal full meas. length [mA] 20 20 4 up to 20 4 up to 20

Burden [ max.] ( Us - 9 V ) : 20 mA

Operating temperature range [°C] -15 °C up to +70 °C

Storage temperature range [°C] -15 °C up to +125 °C

Dimensions: GWW 30/40 GWW 30/100 GWW 30/40 I GWW 30/100 I

Casing [mm] 29 29 29 29

Casing length [mm] 245 335 245 335

Total length incl. trancer finger [mm] 295 445 295 445

Installation length incl. plug [mm] 350 450 350 450

Pin assignment: GWW 40 GWW 100 GWW 40 I GWW 100 I

Pin 1 +Meas. value [mA] +Supply

Pin 2 +Supply [V] -Supply = meas. value

Pin 3 +Meas. value [V]

Pin 4 -Meas. value [V]

Pin 5 -Supply [V]

Pin 6

Pin 7 -Meas. value [mA]


GLÖTZL Baumeßtechnik MECHANICAL FISSUREMETER FOR REMOTE MONITORING IN ROCK

Typ: MFS 20/3 Art.-Nr: 64.50

The fissuremeter for remote monitoring, type MFS 20/3, is used for acquisiton of rock movements in horizontal and vertical directions. The measuring device is operating according to the principle of a wire extensometer, whereby movements are me-chanically transferred to a special dial gauge by a tight stainless steel rope and are there indicated.

The maximum length change of 20 mm is indi-cated at the dial gauge with a resolution of 0.1 mm. In case of movements exceeding the indica-tion range, the measuring length can be shortened or elongated if required.

The development of the favourably priced measur-ing device has been done in common with the engineering firm

Ingenieurbüro, geo-international, Prof. Dr. E. Krauter & Dr. J. Feuerbach, Beratende Ingenieurgeologen, Mainz,

with the idea of an acquisition of movements at not easily accessible rock slopes, and at the same time to be able to take readings from a larger dis-tance in a simple kind, e.g. by means of binocu-lars.

Assembly can very easily be done by means of dowels on the rock slope. The bars of the measuring device can be adapted and adjusted to the spacious con-ditions in all possible directions.

The dial gauge allows the recording of length change of the Z-axis, and the direc-tional panel – dependent on adjustments -the influence of X- or Y-axis.





Technical data: - Meas. length from 0.5 m up to max. 3 m - Material aluminium and stainless steel - Measuring range Z-axis 20 mm,

maximal 30 mm - Meas. range for X- or Y-axis +/- 7° - Diameter dial gauge 180 mm - Resolution 0.1 mm - Practical accuracy under site conditions

+/- 0.25 mm The installation possibilities are shown in the figures opposite. The measuring device can easily be assem-bled and needs no maintenance. The most appropriate way to collect the measured val-ues is the use of binoculars, with which the dial gauge can be read off in a distance of approx. 50 m. The influence of snow or ice in wintertime can only be avoided, if required, by a correspond-ing cover of the measuring device.






ELECTRIC DISPLACEMENT TRANSDUCER with resistivity element, passive

Type: GWD 22/. . . Art. No.: 65.10

The displacement transducer GWD 22 consists of a conductive plastic linear potentiometer on an stainless steel substrate. A scanning device connected with the tracer finger is scanning the measuring value. The connection of the displacement transducer is done in 3- or 5-conductors technics, according to requirement. The casing is constructed of stainless steel tube V4A. The displacement transducers of series GWD 22 are designed for the installation in boreholes or other inaccessible application fields. Therefore, the installation of electronic measuring amplifiers has intentionally not been foreseen. As standard ver-sion, connection is done by connection cables in-fused in the displacement transducer. As option, also plug and socket connections are available.

Evaluation electronics for processing of the meas-uring values 0 - 10 V, 0 - 20 mA, 4 - 20 mA a.s.o. are availabe in different casing types on request of client. All casing connections are sealed with o-rings against environmental influences. At the tracer finger, the casing is protected against penetration of dust and liquids by a radial gland ring.

Technical data of standard types

Technical data GWD 22 / 50 GWD 22 / 100 Voltage supply 1 - 60 V DC 1 - 60 V DC Temperature range -40 up to +80 (125) °C -40 up to +80 (125) °C Scanning current max. 10 mA max. 10 mA Potentiometer resistance 50 kOhm 50 kOhm Resistance tolerance ±10% ±10% Insulation resistance > 1000 MOhm, 500Vss > 1000 MOhm, 500Vss Disruptive strength 500 Veff50Hz 500 Veff50Hz Linearity 0.1% 0.1% Measuring range 50 mm 100 mm Resolution 0.01 mm 0.01 mm Casing ∅ 22 mm 22 mm Overall length 287 mm 417 mm Casing length with cable elongation without tracer finger 190 mm 270 mm Installation length with cable elongation 230 mm 310 mm Further connection types available on request. To obtain measuring values with only a very small distortion, the measuring value should be scanned high impedantly. The supply voltage of the potentiometer should not exceed 10 V.

Accessories: - Battery-operated meas. devices - Change-over manifolds - Change-over manifolds with readout units - Automatic measuring devices - Special instruments on clients’ request

Figure: Displacement transducer, type: GWD 22/50 P065.15F O01.tif




ELECTRIC DISPLACEMENT TRANSDUCER with resistivity element, passive

Type: GWD 30/35/ . . . Art. No.: 65.10

The displacement transducer GWD 35 consists of a conductive plastic linear potentiometer on an aluminium substrate. A scanning device connected with the tracer finger is scanning the measuring value. The connection to the displacement transducer is done in 5-connectors technics.

Electric Displacement Transducer Type GWD 35/400

The displacement transducers of series GWD 35 are designed for the installation in boreholes or other inaccessible application fields. Therefore, the installation of electronic measuring amplifiers was intentionally not foreseen. By use of aluminium substrates in the aluminium casing no danger exists for distorting the measuring element also in case of higher temperatures effects. As standard version, connection is done by Teflon wires infused in the displacement transducer. As option, also plug and socket connections are available. Evaluation electronics for processing of the measuring values 0 – 10 V, 0 – 20 mA, 4 – 20 mA a.s.o. are available in different casing types on request of client. All casing connections are sealed with 0-rings against environmental influences. At the trancer fin-ger, the casing is protected against penetration of dust and liquids by a radial gland ring. Technical data of standard types

Type: GWD 30/100 GWD 35/250 GWD 35/400 Unit Meas. length: 100 250 400 mm Casing length: 225 375 525 mm

Casing ø35 mm Tracer finger ø8 mm Tracer finger connection thread M4 inner* Displ. transducer connection thread M28x15* Potentiometer resistance 50 kOhm Resistance tolerance ± 10% Linearity< ± 0.2%

Resolution/ Reproducibility 0.01 mm Scanning current max. 10 mA Max. operating voltage 60 V Insulation resistance >1000 MOhm, 500 Vss Disruptive strength 100 Veff 50 Hz Temperature range -40 °C up to +125 °C

* Further connection possibilities available on request

To obtain measuring values with only a very small distortion, the measuring value should be scanned high impedantly. The supply voltage of the potentiometer should not exceed 10 V.








Textile strain measurement with Electrical Displacement Transducers with passive resistive element The displacement transducer GWD 20 consists of a flexible insulated foil with a resistive track inside. The foil itself is assembled to a carrier of special steel. A slider connected to a tracer pin is charging the foil and working as voltage divider. Load value is proportional to the measuring displacement with regards to the position of the slider. Connection of the displacement transducer is made in 3-wire-technique.

The displacement transducers of the series GWD 20 are foreseen for installation in boreholes or also other application ranges where access is difficult. For this reason we did installation without electronic measuring amplifiers. When using the standard version, connection is made via Teflon wires which are grouted in the displacement transducer. Optionally, plug connectors are available. Evaluation electronics for processing of

measured data 0 - 10 V, 0 - 20 mA, 4 - 20 mA etc. are available in various housing types according customers‘ request. All housing connections are sealed by 0-rings against environmental influences. At the tracer pin the housing is protected against penetration of dust and fluid by a radial shaft-sealing ring

Technical data of standard types Type GWD 20/6 displacement 60mm housing length 170mm GWD 20/60 displacement 100mm housing length 210mm GWD 20/250 displacement 250mm housing length 280mm Housing dia. 20mm Tracer pin dia. 6mm Max. power-handling capacity 0.5 W at 40° Potentiometer resistance 4.7 kOhm Resistance tolerance +/- 10% Linearity > +/- 2% Resolution/Reproducibility 0.1mm Sliding current max. 1 mA

Max. operating load 10 V Factory-made calibration with supply 1 V meas.output: mV/V Temperature range -30 °C, +70 °C Max. operating pressure 1.5 bar Protection class IP 66 protected against dust

and water jet

In order to achieve slightest possible measuring values corruption, measuring values should be measured on high impedance. Current supply of the potentiometer should not exceed 10 Volts.

GWD 20/60 is a special model with fixation angle for strain measurement at the geotextile grid with a measuring basis of 200 mm, with tracer pin elongation of a flexible fibre glass rod (yellow protection tube of dia. 4.5mm).

GWD 20/250 is a special model assembled on a holding device of special steel for measurement of fibre glass extensometers.

Type GWD 20 / . .Art.-No.: 65.15


GLÖTZL Baumeßtechnik ELECTRIC DISPLACEMENT TRANSDUCERS with resistance element passive

Typs: GWLO 22/. . . GWLG 22/. . .

Art. No.: 65.12 Type GWLO with open casing for extensometer head Type GWLG with closed casing The displacement transducers GWLO 22 and GWLG 22 are equipped with a flexible insulated foil with internal resistance strip. The foil itself is attached on a carrier of brass (casing is nickel-plated). A scanning device connected to the tracer finger is loading the foil which is operated as potential divider. The recorded voltage value is reacting proportionally to the measuring distance, defined by position of scanning device. Connection of the displacement transducer is done in three-conductor technics.

Figure: Displacement transducer type GWLO 22/60 with dial gauge and socket spanner

The displacement transducers of series GWLO 22 and GWLG 22 are assigned for an installation in boreholes or other inaccessible fields of application. Therefore, we wilfully decided against an installation of electronic measuring amplifiers. In standard version, connection is done by teflon wires sealed in the displacement transducer. As option, also plug connections are available. Evaluation electronics for measured value processing of 0-10 V, 0-20 mA, 4-20 mA a.s.o. can be delivered in different casing designs on client’s request.

At tracer finger, the casing of model GWLG is protected against penetration of dust and fluids by a radial gland ring. A mechanical control measurement at the displacement transducer can be carried out in installed condition, if an access is possible. Acquisition is done by dial gauge whereby the distance from casing end to position of scanning device is recorded. Assembly is done by screwing in of displacement transducer casing in a carrier by hexagon connection at casing end. The shaft of displacement transducer (tracer finger) is rotatable resp. adjustable by means of socket spanner.

Figure: Displacement transducer at the top, type GWLO 22/60, displacement transducer at the bottom, type GWLG 22/100


Article Nos. GWL 22/60 GWL 22/100 GWL 22/250

Type GWLO with open casing for extensometer head 65.12.10 65.12.20 65.12.30

Type GWLG with closed casing 65.12.11 65.12.21 65.12.31

Technical data of types GWLO and GWLG

Technical data GWL 22/60 GWL 22/100 GWL 22/250 Voltage supply 1 V DC 1 V DC 1 V DC Measuring output mV/V mV/V mV/V Temperature range -30 up to +70 °C -30 up to +70 °C -30 up to +70 °C Scanning current max. 1 mA max. 1 mA max. 1 mA Potentiometer resistance 4.7 KOhm 4.7 KOhm 4.7 KOhm Resistance tolerance ±20 % ±20 % ±20 % Reproducibility 0.05 mm 0.05 mm 0.05 mm Max. operating pressure 1.5 bar 1.5 bar 1.5 bar Linearity ±1 % ±1 % ±1 % Measuring range 60 mm 100 mm 250 mm Resolution 0.01 mm 0.01 mm 0.01 mm

Protection class IP 66 Dust- and jet water protected

Dust- and jet water protected

Dust- and jet water protected

Dimensions displacement transducer GWLOCasing Ø 22 mm 22 mm 22 mm Tracer finger Ø 5.5 mm 5.5 mm 5.5 mm Overall length 155 mm 195 mm 345 mm Length of casing without tracer finger 130 mm 170 mm 320 mm Length of connecting cable 300 mm 300 mm 300 mm Dimensions displacement transducer GWLGCasing Ø 22 mm 22 mm 22 mm Tracer finger Ø 5.5 mm 5.5 mm 5.5 mm Overall length 210 mm 250 mm 400 mm Length of casing without tracer finger 155 mm 195 mm 345 mm Length of connecting cable PE 4 x 0.5 mm² - Cable length on client’s request

To obtain measured values with only a very small distortion, the measured value should be scanned by using high impedance. The supply voltage of potentiometer should not exceed 10 V. Further connection types available on request.

Accessories: - Battery-operated meas. devices, e.g. FMG 01-2 - Change-over manifolds - Change-over manifolds with readout units - Automatic measuring devices - Special instruments on client’s request

Fig.: FMG 01-2 Fig.: VMG 14.2







V066SB01.vsd

PRECISION DISPLACEMENT TRANSDUCER FISSUREMETER available in 4 meas. lengths, 2 meas. ranges and 4 models

Type: GFD . . . Art. No.: 66.01

The precision tranducer GFD ... is used for measurement of smallest displacements with highest precision. Different models are available and therefore the fissuremeter can be used as a multi-purpose instrument.

For recording of dilatations and upsetting deformations at or in buildings, the transducer is

annexed or embedded in the building material. Changes in length are recorded by high-resolution inductive displacement transducers.

Furthermore, a temperature measurement can be carried out for recording the course of temperature and – if necessary – to make a corresponding compensation.

The zero position which can be adjusted over the full measuring range, is fixed by a compression-tension spring and the movement of the anchor points is precisely transferred by a linear ball bearing to the displacement transducer. By this constructive solution, a displacement change can be recorded without considerable inherent resistances by system. All transducers are encapsulated against spray and light pressure water and manufactured of stainless steel.

Fundamental component parts: 1 Connection cable with temperature transducer 2 Displacement transducer with shiftable core 3 Jacked rod and linear ball bearing 4 Zero position – adjusting spring 5 Casing with anchor points 6 Corrugated pipe of steel or plastic dependent on

model for mechanical protection and sealing Measurement can be done with manual, semi-automatic or automatic measuring devices.

Model A

Fissuremeter for precise measurement of fissure movements. The instrument is fixed above the fissure by means of two anchor rods.

Transverse movements are uncoupled by ball-bearing.

Application examples:

Measurement and observation of rock fissures, movement of construction elements, observation of fissures at buildings

2

31

5

4 6

V066SB01.vsd




V066SB01.vsd

V066SB01.vsd

Model B Precision displacement transducer for measurement of dilatation and upsetting deformations at building components Application examples: Fabric foils, steel parts for buildings, brickwork and concrete elements The instrument is attached to building parts by screwing or welding. Model C Special transducer for displacement measurement in cast or filled-up building components Application examples: In plastics, grounds, brickwork, concrete and shotcrete. The special models of anchor points are ensuring a good adhesion in the embedded medium.

Art. No. Model Meas. length Displacem. Model Total length Distance max. [mm] [mm] [mm] [mm]

66.01.01.01 GFD 150/2,5 150 2.5 A/B/C/D 180 3.5 66.01.01.02 GFD 150/5 150 5 A/B/C/D 180 7.5 66.01.02.01 GFD 200/2,5 200 2.5 A/B/C/D 230 3.5 66.01.02.02 GFD 200/5 200 5 A/B/C/D 230 7.5 66.01.03.01 GFD 300/2,5 300 2.5 A/B/C/D 330 3.5 66.01.03.02 GFD 300/5 300 5 A/B/C/D 330 7.5 66.01.10.01 GFD 1000/2,5 1000 2.5 A/B/C/D 1100 3.5 66.01.10.02 GFD 1000/5 1000 5 A/B/C/D 1100 7.5

Code for ordering:

66.01.XX.YY.Z GFD 150 / 2.5 A Model A / B / C or D Displacement 2.5 or 5 mm, further ones on request Measuring length 150, 200, 300 or 1000 mm Precision displacement transducer - fissuremeter Art. No.: Model A=1, B=2, C=3 or D=4 Order ref.: Model, e.g.: GFD 200/2.5 or 200/5 Order ref.: Type, e.g.: GFD 150 or GFD 20 Technical data: Inductive displacement transducer Meas. ranges nominal 2.5 / 5 mm Non-linearity ±0.3% f.s. Carrier frequency 2.4 kHz Nominal output signal 130 / 263 mV/V Sensitivity 98 / 102 mV/mm/V Temperature range -45 °C up to +120 °C Resolution of meas. value infinite Resolution of meas. values with manual standard recording devices 10-5

Further recording possibilities with automatic meas. device MFA 6 E or field measuring device Special models an request

Temperature sensor Transducer AD 590 Supply 6 - 30 V DC, 1mA Current output 1 µA / K Absolute accuracy ±1°C at 25 °C Shielded meas. cable standard PVC 100 CY 6x0.5 mm², -30 °C up to +80 °C Special cable P120 6x0.5 mm² -10 °C up to +120 °C

Accessories

Change-over manifolds in groups of 5 / 10 / 20 and 30 measuring points

Subject to technical alterations.


GLÖTZL Baumeßtechnik ELECTRIC DISPLACEMENT TRANSDUCER intrinsically safe EEx ia IIC T4 with resistivity element Type: GWW 30/. . Ex

Art. No.: 65.20 The displacement transducer type GWW ...Ex, is encapsulated in a stainless steel casing and has a splash-proof plug connector. Model explosion-protected „intrinsically reliability “ EEx ia IIC T4. The tracing tip is provided with a hardened ball. The tracer finger is of rust- and acid-proof material and is led in a brass bushing. For fixing at a construction part, the transducer is equipped with a thread M 18x1.5. By means of a threaded bushing (see figure) the displacement transducer is directly threaded on the measur-ing head of the plastic rod extensometer for electric remote transmission.

P065.20FO01.tif

Figure: Displacement transducer , type GWW 100 Ex for rod extensometer

Function: The displacement transducer consists of a conductive plastic resistivity element with shiftable scanning con-tact. The element is operating as potential divider and is converting a displacement into an analog, electric voltage. The signal is fed – amplified by an electronic circuit – to the output as standardized signal 4-20 mA in 2-conductors technics. Thus, it can be used for remote transmission and also for analog recording.

Technical data GWW 30/50 Ex

GWW 30/100 Ex

GWW 30/200 Ex

Voltage supply ± Volt DC Current consumption mA Temperature range °C Temperature coefficient f.s. % / °C Linearity % Measuring range mm Resolution mm Output signal mA/mm Output signal full meas. range mA Casing diameter mm Overall length mm Casing length without tracer finger and plug connector mm Installation length with connector mm

10 - 30max. 20- 15...70

< 0.010.15+500.010.324-20

30325275380

10 - 30 max. 20 - 15...70

< 0.01 0.15

+100 0.02 0.16 4-20

30 450 350 460

10 - 30max. 20- 15...70

< 0.010,15

+2000.050.084-20

30765565580

Accessories: - Battery-operated measuring devices - Change-over manifolds - Change-over manifolds with readout unit - Automatic measuring devices - Special instruments on clients’ specification

Version: 25.03.2008/ IG / SP / P065.20.00.00.00.001R02_engl.doc

The displacement transducer, type GWW 30/... Ex is measuring distance changes which are recorded with the conductive plastic resistivity displacement transducers and is converting them into a standardized meas-uring signal 4 - 20 mA. The displacement transducers must be operated with intrinsically-safe electric circuits. Example:

Zener barrier

Zener barrier

Meas. station

24 V

MW

GND

Electronics

+ Input 10 - 30 V

- Output4-20 mA GWW 30/50 Ex (100, 200)

Tracer finger

Meas. distance 50 mm (100,200)

Zone 1

Connection values of current supply Uz = 28 V I = 98 mA P = 688 mW Resistance bar: 50 KOhm (+/-10%) total resistance Supply: 0.5 V constant voltage is taken at input 0 - 0.5 V. Measuring value: Amplifier output 4 - 20 mA Registration:

EEx ia IIC T4 PTB Nr. EX_92.C.2165






Type: GFVM 250/0.6Art. No.: 66.80

VIBRATING WIRE STRAIN TRANSDUCER for CONCRETE System Maihak (corresponding to MDS 53 a)

• High measuring accuracy under difficult conditions

• Long-term stability with high resolution

• Frequency meas. procedure, insensitive and robust

• Remote transmission with larger cable lengths • Approved and successfully used system

Application The transducer GFVM 250/0.5 isused at barrages, water buildings,high constructions, linings oftunnels, galleries and shafts,bridges, piles and power plants formeasurement of dilatation andupsetting movements in the interiorof concrete. By its high stability,overall length and big anchor platesit can also be used formeasurements in concrete withcoarse additives.

Description The dilatation or upsetting move-ments, occuring in the concrete buil-ding, are absorbed by the stronganchor plates and transferred by themeasuring body to the vibrating wireexisting in the interior of thetransducer. For temperature measurement, thesensors are equipped withthermistors; optional PT 100. The strain transducer is directlyplaced into the concrete duringbackfill or fixed at the reinforcementby means of wire via the drilled holesat the anchor plates.

The transducer is constructedbending-insensitive and robust.

The connection of the measuringcable is normally done in the factorywith 2-components epoxy resin,pressure watertight with strain relief atthe meas. cable. Additionally, themeasuring wire is protected againstwater entry by a wire protection tube.

Furthermore, all interior spaces of thesensor are sealed with a plasticsynthetic material.

Technical data, type GFVM 250/0.6 Meas. range standard 2x10-3 (0.5 mm / 250 mm base)Meas. range option 3x10-3 (0.6 mm / 250 mm base)Meas. range allocation approx. 25% strain/75% pressureMeas. length standard / optional 250 mm / 500 mmModulus of elasticity 22.000 N/mm²Operating frequency of meas. wire approx. 700....1.000 HzResolution of measuring value < 0.02%Accuracy under calibration conditions FSO < ±1%Linearity under calibration conditions FSO < ± 0.5%Thermal expansion figure of meas. wire 11.8 E 10-6

Operating temperature range -20...+70 °CWeight approx. 0.8 kgTemperature sensor standard / optional thermistor / PT100

Figure: Installation example in the reinforcement of a lock construction

Figure: Strain transducer for concrete with anchor plates, standard, 250 mm long





50 mmLänge 500 mm

Figure: Model AS with anchor plates for installation in concrete and attachment to reinforcement iron Example: In concrete piles for attachment at the reinforcement in probe length 500 mm, meas. range 0.6 mm

Art.. No.: Type Distance Anchor [mm] Type

66.80.01.XX GFVM250/0.6A 250 A 66.80.11.XX GFVM500/0.6A 500 A

66.80.02.XX GFVM250/0.6AS 250 AS 66.80.12.XX GFVM500/0.6AS 500 AS

66.80.03.XX GFVM250/0.6C 250 C 66.80.13.XX GFVM500/0.6C 500 C

66.80.04.XX GFVM250/0.6E 250 E

Figure: Model „AS“ with anchor plates for concrete

50 mmLänge 250 mm

Figure: Model „AS“ with anchor plates for attachment at reinforcement iron

50 mmLänge 250 mm

01 with thermistor, cable connection, cable PE with PVC inner sheath and copper screen, cable wires 4x0.5 mm², Ø 10 mm

02 with temperature sensor PT100 DIN B, cable connection, cable PE with PVC inner sheath and copper screen, cable wires 6x0.5 mm², Ø 10 mm

03 with thermistor, cable connection, cable PE without inner sheath, copper screen, cable wires 4x0.5 mm², Ø 7.5 mm

04 with thermistor, cable wall socket, Lemosa 4-pole, pressure watertight 05 with temperature sensor PT 100 DIN B, cable wall socket Lemosa 6-pole,

pressure watertight 06 Option for plug-in connection Lemosa foreseen at the unit 0X Standard meas. range 0.6 mm / 250 mm (500 mm), approx. 25% dilatation and

75 % upsetting movement XX Special models and measuring ranges on clients’ specification

Length 500 mm

Length 250 mm

Length 250 mm

Installation example with three-dimensi-onal arrangement of sensors On a basic body of PVC, art. No. 66.80.95,3 and max. up to 6 pieces of sensors,art. No. 66.80.01.01, are screwed ondirectionally oriented.

Figure: Model „E“ for attachment at steel construction part with welding lashes

Length 250 mm 20

Figure left: 2 strain transducers with a meas. base of 500 mm, connected to an integral element with 2x500 mm measuring base, max. displacement 2x0.6 mm

50 mmLength 250 mm

Figure: Model „C“ for attachment at concrete or steel construction part with cable connection


GLÖTZL Baumeßtechnik Fissuremeter – Heavy Type with Electric Displacement Transducer GSFW : :

Art. No. 66.05 The heavy-type fissuremeter is used in order to measure longitudinal misalignments in displacement. For decoupling of the anchor plates the connections are equipped with universal joints. By these joints the longi-tudinal displacements which should be measured are transferred and eventual mechanial horizontal dis-placements will be deflected. The fissuremeter is consisting of two telescopic special-steel tubes with sealings which are movable one into the other. Inside there is a displacement transducer installed which is sensing the displacement of the pecial-steel tubes and is transferring it as measuring value.

25 3 7

1

8

4 5

6Design

1. Displacement transducer with tracer pin2. Cable connection area 3. Telescopic inner tube Ø 50mm 4. Telescopic outer tube Ø 60mm 5. Universal joints 6. Anchor plate 7. Sealing and protection tape Type GFSW

for settlement measurements

The following displacement transducers are available: GWW........ with Resistive bar, measuring output 4 – 20 mA

Usually, the electronics are placed outside the installation posi-tion - for better access.

GWD........ with Passive resistive element 5 kΩ,

Order no.: Displacement Measuring signal Measuring length [mm] 5kΩ 4 - 20 mA [mm]

66.05.01.XX.YYY 40 01. 02. 300 – 1500 mm to be specified66.05.02.XX.YYY 100 01. 02. 400 – 1500 mm 66.05.03.XX.YYY 200 01. 02. 600 – 1500 mm 66.05.04.XX.YYY 400 01. 02. 800 – 1500 mm Measuring ranges and technical data are shown in the relevant leaflets for the displacement transducers, type GWW and GWD.




Application Examples

P06605 Skizze 01R00.vsd

Shaft

Sole

Settlement celltype GFSW

Installation between two abutments for sens-ing of convergency Anchoring by anchor plates which are fixed at the joint Installation between joint and sole Anchoring at the joint and at the sole Installation by anchor plates in displace-ments resp. in embankments In shafts for sensing settlements in filling material and convergencies Other models on customers‘ request:

- Meas. length up to 5m - Meas. length from 20mm to 800mm- Material: special steel or steel

Technical data: Max. power-handling capacity 0.5 W at 40° Max. operating load 10V Temperature range -30 °C to 70 °CPotentiometer resistance 4.7 kΩ Linearity <± 1% Resolution 0.01mm Reproducibility 0.05mm Resistive tolerance ±10%



MECHANICAL MEASURING ANCHOR

Type: MA 25 Art. No: 92.01.02

Application For all underground repository constructions for which the formation of a rock supporting ring should be achieved by system anchoring. The measuring anchor is a combination of anchor and extensometer. Is it its task to determine the deepening ranges in which the load discharge is given by the breaking up of the rock. Therefore, the anchor is suitable for determination of the most favourable anchor lengths. By three advantages the instrument is a low-cost, but recommendable device for practice: Firstly the possibility of an installation in each borehole which can also be used for system anchors, secondly the fact that is replaces an anchor and thirdly the simply operatable mechanical reading.

Instrument Description The mechanical measuring anchor consists of a hollow anchor rod (1), the cross-sectional area and material of which correspond to a 26-mm anchor. Inside of this rod, measuring rods can permanently be connected with the anchor rod at four free-selectable points. From these anchor points (2) miniature measuring rods (3) are conducting to the anchor head (4). By means of a suitable mechanical dial gauge, longitudinal deformations by elongations between the single anchoring points can be determined. Thus, the stress of the anchor rod can be controlled in the single deepening ranges.

Technical Data Overall length: maximal 6 m

Measuring lengths: Any four lengths up to 6 m

Measuring accuracy: 0.01 mm

Installation direction: Any inclination between horizontal and vertical installation

Reading: Manual reading of dial gauge

4

1

3

2

P092

.01.

02SB

01.v

sd


Evaluation of Field Measurement Technical Data

Application

For all underground repository constructions for which the formation of a rock supporting ring should be ach-ieved by system anchoring. The measuring anchor is a combination of anchor and extensometer. It is its task to determine the deepening ranges in which the load discharge is done by the breaking up of the rock. Therefore, the anchor is suitable for determination of the most favourable anchor length. By the following advantages - replaces a system anchor - no special boring necessary - simple mechanical reading the instrument is a low-cost, but indicative measuring device for the underground mining. Instrument Description The mechanical measuring anchor consists of a hollow anchor rod (5), the cross-sectional area and material of which correspond to the concerned anchor. Inside of this rod, measuring rods can permanently be connec-ted with the anchor rod at any four points. From these anchor points (4) miniature measuring rods (3) are conducting to the anchor head. By means of a suitable mechanical dial gauge (1) longitudinal deformations by elongations or upsettings between the single anchor points can be determined. Thus, the stress of the anchor rod can be controlled in the single deepening ranges.

Technical Data Overall lengths: 2, 3, 4 or 6 m, in special cases more

Measuring lengths: 0.5 to 6 m, in special cases more

Reading accuracy: 0.01 mm with dial gauge

Installation direction: Any inclination between horizontal and vertical installation is possible. Mortared in complete length.

Model: Hollow anchor with or without welded knobs

Type MA20: Nominal size Ø 26 mm (Ø incl. welded knobs Ø 33 mm) for system anchor 200 kN breaking load

Type MA25: Nominal size Ø 28 mm (Ø incl. welded knobs Ø 35 mm) for system anchor 250 kN breaking load

Further load steps on request

60

010

20

30

4050

70

80

90

2

2

X

3

4

5

6

A B

Cross sectionA-B

x: 4-fold meas.head

1

2 4

3

1 Dial gauge2 Protection cap3 Miniature rod4 Fixed points5 Hollow anchor6 Injection tip

P092.01.02SB02.vsd


Evaluation of Field Measurement Definitions In case of mechanical measuring anchor in standard version, the anchor is subdivided in four measuring sections with the same length. The mean value of the absorbed load in each measuring section is calculated by use of the anchor point displacement determined by means of the mechanical dial gauge. The parameters and variables indicated on the attached data sheet, protocol and evaluation of field measurements have the following meaning: X = Index for identification of measuring section, of the measuring rods and the accompanying fixed point x = (1, 2, 3, 4) t = Index for identification of the time of measurement t = (0, 1, 2, ....., i) A (x, t) = Reading of dial gauge at measuring rods x at time t, in mm M (x, t) = A (x, 0) - A (x, t) = Displacement of fixed point x between time and zero measurement (t = 0), in mm P (x, t) = Mean value of anchor load, recorded by measuring section x at time t, in kN L (x) = Length of measuring rods, in mm E = Elasticity module of mechanical measuring anchor in kN/mm2 F = Cross-sectional area of mechanical measuring anchor in mm2

P (x, t) = ( ) ( )( ) ( ) L

MxFxExLxLtxMtxMxFxE

ΔΔ=

+−+−1

,1,

By definition is L (5) = M (5, t) = 0 The above mentioned evaluation formula is only valid for the elastic range of the mechanical measuring anchor. 1. Allocation of variable indexes For simplification of calculation, a combination has been done between the variables of the formula indicated in data sheet No. 5.5, page 1 C and the instrument parts of data sheet No. 5.5, page 1 with the index X. The prevailing meaning can be seen in the sketch.

X = 4 X = 3 X = 2 X = 1

X = 5 X = 4 X = 3 X = 2 X = 1

X = 5

X = 4

X = 3

X = 2

X = 1

X allocated for:

P (x, t) Anchor load-mean value in measuring cross section X

M (x, t) Displacement of fixed point X

L (x) Length of measuring rods X

Anchorhead

2. Technica Data

Measuring anchor Measuring anchor Measuring anchor Measuring anchor type nominal diameter cross section E-modulus

MA20 26.0 mm 417.8 mm2 201.036 kN/mm2 MA25 28.0 mm 502.6 mm2 201.036 kN/mm2




Mechanical Measuring Anchor MP 92.00 Records and Evaluation of Field Measurements

MP 9201100 Mechanical Meas. Anchor.doc COPY Site: Measuring Cross Section: Name of Resp. Person:

Station No.: Anchor No.: Anchor

Length: Standard Measure:

Anchor Diameter: Page No.:

m 25.00 mm 26.0 mm (MA20) 28.0 mm (MA25)

A (X,t) Dial Gauge Reading [mm] __ __ , __ __

M (X,t) Fixed Point Displacement [mm] __ __ , __ __

P (X,t) Anch. Load in Section X [kN] __ __ , __ __

Curr.No.: Date: Time: X = 1 X = 2 X = 3 X = 4

A (X,t)

M (X,t)

Δ M

P (X,t)

A (X,t)

M (X,t)

Δ M

P (X,t)

A (X,t)

M (X,t)

Δ M

P (X,t)

A (X,t)

M (X,t)

Δ M

P (X,t)

A (X,t)

M (X,t)

Δ M

P (X,t)

A (X,t)

M (X,t)

Δ M

P (X,t)

Remarks:

MP920000.doc ©´98 JGL • 76287 Rheinstetten

Stand: 03.06.2009 / SP / P066.85.01.00.00.001R00_engl.docx




Subjekt to technical alterations

Type: GFVM 250/0.5 ESArt.-No.: 66.85

STEEL STRAIN GAUGES, VIBRATING WIRE TYPE Maihak System

Application The Strain Gauge GFVM 250/0.5 ES is used for the measurement of strain and compression on girder constructions, sheet pile walls, bridges and other steel structures.

Description Strain and compression which are occurring in steel structures are taken by the welded holding devices and transferred via the measuring body to the vibrating wire inside the gauge. Measuring basis is 250 mm and it is precisely adjusted by a thread.

For temperature measurement, the sensors are equipped with thermistors; alternatively equipment by PT 100 is possible.

The gauge is inured against bending and therefore robust.

Connection of the measuring cable is usually made tight against pressurized water with a 2‐components resin and it is equipped with a traction relief at the measuring cable. Additionally the measuring wire is protected by a protection tube against water intake.

Furthermore, the internal space of the sensor is sealed by plastic material.

Technical Data Type GFVM 250/0.5 ES Installation Example Meas. Range standard 2 x 10‐3 (0,5 mm / 250 mm basis)

Meas. Range sectioning ca. 50 % tension / 50 % pressure

Meas. Length standard / optional 250 mm

Elasticity modulus 22.000 N/mm²

Working frequency of the meas. wire ca. 700....1.000 Hz

Measuring value resolution < 0,02 % Accuracy under calibration conditions FSO < ± 1 % Linearity under calibration conditions FSO < ± 0,5 % Coefficient of thermal expansion of the meas. wire 11,8 E 10‐6

Range of operating temperature ‐20...+70 °C

Weight ca. 0,8 kg

Temperature sensor standard / optional thermistor / PT100

• High measuring accuracy under rough conditions

• Long‐term stability with high resolution

• Frequency measuring method, inured and robust

• Remote transfer with large‐distance cables

• Well‐proven and successfully used system

Ill.: Steel Strain Gauge with holding devices for assembling for welding, heavy type, basic distance 250 mm

Version: 05.01.2005 / SP / IG / P092.10.00.00.00.001R00_engl.doc

GLÖTZL Baumeßtechnik MEASURING ANCHORS for Swellex anchor system

Type: SMA . . . Art. No: 92.10

Based on the system of the SWELLEX anchors of Atlas Copco, Glötzl has created a new instrumentation method which includes the advantages of this anchor system. The basic principle is a folded tube which has been modified for the measuring- and installation instruments of Glötzl which are important for tunnel advance.

Essential advantages compared with conventional and still known instru-ments: • Immediate availability resp.

standby for measurement after installation

• Uncomplicated installation in all meas. positions and -directions

• Very short installation periods in minutes, without mortar

• Standard boreholes, dependent on anchor 32-52 mm

For an application of the SWELLEX anchor systems in tunnelling, we have developed this measuring anchor for measurement technique support. It consists of a standard SWELLEX anchor, which is modified by us to a measuring anchor. For this, pull bars are fitted in the interior, the length change of which is recorded at the head by measurement technique.

The anchor models are available in standard lengths of 2, 3, 4, 6 and 9 m, according to the anchor types SWELLEX and SUPER-SWELLEX. Further lengths on request.

Supplementary for the system, the measuring anchors are equipped with load cells.

Meas. headMeasuring Anchor

Clearance tube

P092BG01.vsd

Figure: Measuring anchor , cutaway diagram, with arrangement of pull bars

Version: 05.01.2005 / SP / IG / P092.10.00.00.00.001R00_engl.doc




The anchor part consists of a folded steel tube, widened by waterpressure after installation in the borehole. By this, the outercovering gets into contact with the rock and is deformed accordingto its ruggednesses. Thus, a high-tensile and permanent com-pound is ensured. The essential advantage – compared with the already knownprocedures – is the immediate readiness to work without use ofcement and plastics or working steps like strain and striking.

A Measuring anchor with load cells B Bottom surveying points C Hydraulic convergency bolts for mechanical and geodetic measurement D Extensometer with hydraulic anchor points

Models Load [kN]

L [m]

Drill. Ø [mm]

Wgt. [kg]

Article Nos.:

SMA 11/2 110 2 4 92.10.01.02SMA 11/3 110 3 32 6 92.10.01.03SMA 11/4 110 4 up to 8 92.10.01.04SMA 11/6 110 6 39 12 92.10.01.06SMA 11/9 110 9 18 92.10.01.09SMA 15/2 150 2 8 92.10.02.02SMA 15/3 150 3 43 12 92.10.02.03SMA 15/4 150 4 up to 16 92.10.02.04SMA 15/6 150 6 52 24 92.10.02.06SMA 15/9 150 9 36 92.10.02.09SMA 22/2 220 2 8 92.10.03.02SMA 22/3 220 3 43 12 92.10.03.03SMA 22/4 220 4 up to 16 92.10.03.04SMA 22/6 220 6 52 24 92.10.03.06SMA 22/9 220 9 36 92.10.03.09

REMARK: SWELLEX is a registered trademark of the company ATLAS-COPCO. The products of Glötzl based on the SWELLEX systems, are independent instruments which are manufactured on the basic material of the SWELLEX anchors. Each liability for the instruments presented in this prospectus, is on the part of Glötzl Gesellschaft für Baumeßtechnik mbH.

T = Kalibrieranschlag1 - 4 = Messpunkte

QuerschnittSWELLEX-Rohr

T 123

4

M5

Wegaufnehmer

Wegaufnehmer

Fig.: Dial gauge set for mechanical or digital meas. value recording

Abb.: Assembly of meas. head with displ. tranducer

Anchor load cell with attachment piece and clamping nut f. SWELLEX anchor, mechanical model with manometer, or elec-trical output signal

Fig.: Anchor load cell

1 2 3 4

Anch. boring

Swellex anchor

Manometer w. prot. cap

Anchor load cell Distributionplate

Anchor nut

Meas.head

Anchor plate


GLÖTZL Baumeßtechnik MEASURING HEAD with DISTANT READING (displacement transducer) for measuring anchor MA25

Type: MF4/10-MA25 Art. No: 92.01.21

General The standard measuring head of the measuring anchor MA25 (see fig-ure 1) with its fourfold bars can optionally be equipped with a measuring head for distant reading with miniature displacement transducers. The mounting housing has a diameter of 50 mm, the overall length is 210 mm (see figures 2 and 3). For remote measurement, potentio-metric displacement transducers with a measuring distance of 10 mm are used. Connection of the displacement transducers to a connection box for manual measurement (FMG), or to an automatic measuring de-vice (e.g. MDL41) is done by a collecting cable 12 x 0.5 mm².

Figure 1: Standard measuring head MA25 for measurement with a dial gauge

Assemblage of the measuring system

Figure 2: Assemblage of measuring head with distant reading (cross section)

Figure 3: Measuring head with distant reading, completely mounted





Displacement transducer GWD 10/10, Art. No.: 65.30.01 Technical data Potentiometric displacement transducer, potential divider, 3-conductor Resolution max. 0.001 mm Reproducibility <0.01 mm Supply 1 up to 5 VDC, constant Measuring output mV/V Dimensions Diameter 10 mm Overall length 45.5 mm Measuring length 10 mm (optional 20 or 30 mm)

Figure 5: Measuring head connection with guide cylinder and threaded spindle before assembly

The guide cylinder is attached to the standard measuring head by guide pins.

Digital indicating instrument for two measuring channels, type FMG01-2

Automatic micro measuring station, type MDL41/20

Figure 4: Displacement transducer, type GWD10/10

Advanced Solutions

TEMPERATURE AND CLIMATETransducer

TE

MP

ER

ATU

RE

AN

D

C

LIM

ATE


Barometric Pressure Transducer LL >

Temperature Transducer T >

Temperature Transducer GPT >


GLÖTZL Baumeßtechnik BAROMETRIC PRESSURE TRANSDUCER Electronic barometer

• High measuring accuracy and

temperature stability

• Frequency meas. procedure

• For large transfer distances

• Robust model

Application The barometric pressure transducer type 1302 is used as electronic barometer for recording of the barometric pressure at the measuring point over automatic measuring stations. The automatically measured barometric pressure values can also be used by con-version in height indications for elimina-tiobn of the influences by barometric pres-sure on the measuring values of further transducers installed at the measuring point. This concerns above all hermetically tight pressure transducers in subsoil or in water. The barometric pressure transducer LD02 is constructed for mounting in accessible constructions and works maintenance-free.

Type: LL02Art. No: 59.01

The barometric pressure trans-ducer has a compensated sen-sor element and a microproces-sor for control and linearizationof the pressure curve. By meansof a frequency synthesizer, aquartz-stable sine signal is ef-fected which gives a vibratingwire compatible measuring sig-nal by a gal-vanically separatedtransmitter.

Thus, the barometric pressuretransducer can be measuredlike a common passive vibratingwire transducer by means of ahand measuring device or by anautomatic measuring station.

Power supply is done by a small supply unit (12/24/42 V DC or 230 V AC) or in case of several active transducers by a collect-ing line.

Description





Technical data type LD02 ___

Measuring range 850 mbars-1.050 mbars Further pressures as option Overload factor 1.5 Operating frequency 700 ... 1.000 Hz galvanically separated Resolution under calibration conditions 0. 25 mbar Accuracy under calibration conditions 5 mbars Operating temperature range -15 ... + 60 °C Max. cable length till meas. device 2000 ... 5.000 m (acc. to cable type) Overvoltage protection installed 2.5 kA Supply 24 V DC or 230 V AC Current consumption max. 10mA Weight approx. 0.4 kg Dimensions approx. 120x200x60 mm

Version: 06.11.2008 / RA / IG / P067 01 00 00 00 001R03_engl.docx

GLÖTZL Baumeßtechnik ELECTRIC TEMPERATURE TRANSDUCER

Type: T . . Art. No.: 67.01

The temperature sensors TAD and TAD-E contain an electronic circuit supplying an electric current which is proportional to the absolute temperature. The sensors are very robust and suitable for an application under rough conditions. According to temperature range and required accuracy, the sensor TAD can be used, for higher requirements the sensor TAD-E is more suitable.

For applications in an extended temperature range, a special cable is required.

Besides the standard version, the sensors are also available as special models which are suitable for press-ing into the underground. Either the FMG 01-2, or the multimeter VMG 14.1. can be used for manual reading of single measuring points. The necessary supply for the temperature sensors is placed in the measuring instruments.

Type codes: TAD Sensor AD590 with 2-conductor system, IC temperature sensor TTE Thermistor with 2-conductor system, NTC resistance TPS PT100 with 4-conductor system, temperature-dependent resistance TPH PT1000 with 4-conductor system, temperature-dependent resistance - B DIN B model - A DIN A model

Option: - 4-20 mA Converter with current output 2-conductor system - E Sensor with extended temperature range - P Sensor to press in, connection thread R ¼“ - EP Sensor to press in, extended temperature range, connection thread R ¼“ High-temperature cable for sensors -60 °C up to +180 °C

Accessories: Readout unit VMG 14 or field measuring device FMG 01-2

Figure: Temperature transducer in standard housing and press-in housing

Version: 06.11.2008 / RA / IG / P067 01 00 00 00 001R03_engl.docx




ELECTRIC TEMPERATURE TRANSDUCER for MEASURING CHAINS

Type: T. . . Art. No.: 67.11

Technical data AD590 (TAD) Thermistor (TTE) PT100 (TPS) PT1000 (TPH)

Temp. application range -25 °C up to +70 °C

-25 °C up to +70 °C -25 °C up to +70 °C -25 °C up to +70 °C

Temperature error at 0°/25° ± 1 K at 25°C 0.2 K at 0 °C ±0.3 K at 0 °C ±0.3 K at 0 °C

Temperature error at 70°/100° ± 3 K at 100 °C 0.2 K at 70 °C ±0.8 K at 0 °C ±0.8 K at 100 °C

Nominal resistance - 3 kΩ at 25 °C 100Ω at 0 °C 1000Ω at 0 °C Supply 6 up to 30 VDC 0.1 mA 1 mA 1 mA Output signal 1 µA/K ΔR 0.385 Ω/K 3.5 Ω/K Line system 2-conductor 2-conductor 4-conductor 4-conductor

Cable ÖlflexClassic 110 CY25x0.5 mm²

Distance piece

Shrink hose

Sleeve VA1.4305


Shrink hose

Shrink hose

Ø 20mm.

Shrink hose

Sleeve VA1.4305


Shrink hose

Shrink hose

Ø 20mm.

110m

m.

Endpiece


GLÖTZL Baumeßtechnik ELECTRIC TEMPERATURE TRANSDUCER

The temperature sensors GPT have a temperature-dependent platinum resistor PT 100 with a nominal resistance of 100 Ohm at 0 °C. For compensation of line restistances, they are constructed in three- or four-conductor technics. The sensors are very robust and suitable for application under rough site conditions. According to temperature range and required accuracy, the sensor GPT is used, for higher requirements the sensor GPT-E is more suitable.

For application in an extended temperature range, a special cable is required.

Figure: Readout unit FMG 01-2

Figure: Readout unit VMG 14.1

Besides the standard version, the sensors are also available in special models which are suitable for pressing into the underground. Furthermore, the standard version can also be delivered with additional cable screwing and strain relief. For manual reading of single measuring points, the FMG 01-2, or the multimeter VMG 14.1 can be used. The necessary supply for the temperature sensors is placed in the measuring instruments. The used measuring instruments contain a line compensation in four-conductor technics and also a linearization of measured values according to DIN 43 760.

Technical data:

Absolute accuracy: acc. to DIN 43760 class A, B, 1/3A Standard temperature range: - 25 °C up to + 75 °C Extended temperature range: - 55 °C up to +180 °C Special temperature range: - 100 °C up to +260 °C

Higher accuracy ranges can be quoted on request.

Type codes:

GPT Standard sensor GPT-E Standard sensor with extended temperature range GPT-P Temperature sensor to press in, connection thread R 1/4“ GPT-EP Temperatur sensor to press in, extended temperature range, connection thread R 1/4“

Figure: Temperature transducer in standard housing and in press-in housing

Type: GPT . .Art. No.: 67.02




Class AClass B

Temperature in °C

Perm

issi

ble

devi

atio

n in

Ohm

Class B

Temperature in °C

Perm

issi

ble

devi

atio

n in

Ohm

Class A

0 0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

-200 -100 0 100 200 300 400 500 600 700 800 -200 -100 0 100 200 300 400 500 600 700 800

Permissible deviation from basic values acc. to DIN

Sensor:Construction Standard transducer

GPTwith extended temperaturerange GPT-E

Lapptherm 120, 5x0.5 mm²screenedSpecial insulation onPVC baseTemperature range-10 °C up to +105 °Cshort-time +120 °CNominal voltage 500 V

Siflex 4x0.5 mm² screenedRefined wired cord of galvanizedE-Cu wires, insulating cover andouter casing silicone baseTemperature range-10 °C up to 105 °Cshort-term +120 °CNominal voltage 500 V

PG-screwing and mechanicalstrain relief

Sealing material 0-ringPerbunan temp. up to +100 °C

Sealing material 0-ringViton temp. up to +200 °C

Intern. casing

Sealing compound epoxyresinApplication temperature-20 °C up to +100 °C

Sealing compoundsiliconeApplication temperature-40 °C up to +180 °C

Cable connectionMeas. cable transducersoldered

Sensor PT 100acc. to IEC 751 resp.DIN class B

Casing stainlesssteel 1.4305

Advanced Solutions

OTHER TRANSDUCERSTransducer

OTH

ER

TR

AN

SD

UC

ER

S


Wirebox for Leakage Water Measurement >

Leakage Water Volume

Measuring System SWP >


GLÖTZL Baumeßtechnik WEIRBOX for LEAKAGE WATER MEASUREMENT

Type: GWK 552 Art. No.: 88.01

The weirbox for leakage water is used for measurement of free floating water volumes in the dimension of 0.0001 – 2.0 l/s (12 l/s).

Figure:

Weirbox, consisting of: - Inflow reservoir - Outflow reservoir with

measuring orifice - Measuring reservoir with

water level indication - Cleaning flap

Two measuring orifices are available for measurement of water volumes. The level of dammed-up water – dependent on inflowing water volume – is read in mm at the water level indicator and the flow rate is determined by a calibration table. With the water level measuring device GWS A 250 a remote control can be done up to 150 m distance by means of the pearl procedure or a registration of the measured value with an automatic measuring device. Determination of the water volume by a calibration table

Orifice A 0.001-0.25 l/s Orifice B 0.02-1.00 l/s

Flow rate l/s Flow rate l/s





Function: The water is entering the inlet reservoir 1 and is calmed by the orifices 1.1 as well as by the separating plate 1.2. The outflow is done by the orifice 2.2, whereby a water level is built in the outflow reservoir 2. This level is transferred to the measuring basin by means of the opening 3.3 and calmed. The measured water level in the measuring basin is registered in the calibration table where the searched water volume can be read in l/sec.

Models: 1) Type GWK 552-A1 Remote control and automatic registration by means of pearl procedure

at connection 3.1

2) Type GWK 552-1 Direct measurement from water level indication 3.2

Orifices: A. 0.001 – 0.25 l/sec. B 0.02 – 1.00 l/sec. Resolution over 200 mm measuring distance C 0.2 – 2.00 l/sec. Further measuring ranges on request D. 0.2 – 12.00 l/sec.

Description: 1. Inlet reservoir 3. Inlet reservoir 1.1 Orifices 3.1 Measuring connection for remote control 1.2 Separating plate by means of pearl procedure 1.3 Metal guide (only for type 552-A1) 1.4 Cleaning flap 3.2 Water level indication for 2 Outflow reservoir direct measurement (type 552-1) 2.1 Interchangeable orifices 3.3 Separating plate with intake borings for water calming

Technical Data: Material: V2A sheet, 1.5 mm mat. No.: 1.4571 Dimensions: Length 500 mm, height 500 mm, depth 200 mm Weight: 15 kgs For orifice D (dependent on location) a special model of box is required.

2.1

3

3.2

3.3

3.1

2

1.2

1.1

1

1.3

1.4 P088SB01.vsd


GLÖTZL Baumeßtechnik LEAKAGE WATER VOLUME MEASURING SYSTEM

Type: SWP02Art. No: 88.10.10

• High measuring accuracy and long-term stability

• Clear measuring procedure • Configuratable for weir or

pump operation • Measuring range:

- Flow rate 0.1...150 l/s - Level of 20...100 cm

• Outputs: - Vibrating wire compatible - RS485-bus - 4...20 mA (optional)

• For cable lengths up to - 2 km (vibr. wire comp.) - 1.2 km (RS485)

• Illuminated local display

Application The leakage water volume measuring system can be used for automatic measurement of smallest up tolarge leakage water volumes. Furthermore, a direct water level measurement can be done up to appox. 1 m(optional 2 m). Of special advantage is the application in case of not-easily accessible locations, e.g. shafts.The system can be used as simple, local measuring system with on-site indication or can be connected to acentral measuring station. The applied output signal allow large line lengths without measuring error. In caseof bus-operation, several instruments can be operated by a common two-wire circuit.

The leakage water volumemeasuring system is operatingwith ultrasonic. The US sensoris temperature compensated.By means of a mirco computer, level and flow values can becalculated from the distanceraw values and the stored cali-bration data. In flow operation,the results of the laboraty cali-bration are used for it. In pump operation, additionallythe circuit control commands foran external pump and it’s con-trol are generated form the leveldata. In this operation

mode, the leakage water flow iscalculated by filling time andvolume of the measuring box.The indication of the measuring values flow and water level isdone by display on site. Thenthe values are converted into avibrating wire-compatible fre-quency signal (or 4...20 mAsignal) and can now be mea-sured on site like a conven-tional vibrating wire transducer (or 4...20 mA sensor) by man-ual measuring device or can betransferred to a measuring sta-tion by sensor cable.

Additionally, a bus-capableRS485 connection is existing. By this, the instruments are interlinkable. By means of a service instru-ment, measured data and cali-bration values can be read and changed in case of a corre-sponding necessity. The system is operating with 230 V. The pumps are fed and secured by an independen

t closing switch. The supply is done with 230 or 380 V de-pendent on the necessary pumping capacity.

Description


Measuring Principle of Leakage Water Volume Measuring System

Beruhig

ungs

strec

ke

Auslau

fstrec

ke

Venturi-Wehr

Durchflussbetrieb

Pumpbetrieb

Beruhigungs-kammer

Messkastenmit Pumpe

V-Wehr

Beruhig

ungs

strec

ke

30/60/90°

Pumpe

US-Sensor US-Sensor

US-Sensor

zur Elektronik

zur Elektronik zur Elektronik

Messprinzip Sickerwassermengenmesssystem

to electronics

to electronics to electronics

Calming pathFlow operation

Calming path

Venturi wire Venturi wire

Meas. boxwith pump

pump

outflow path

Calmingchamber

Pump operation

meas. principle of lekage water volume meas. system

Models • Weir operation, with or without measuring box • Pumping operation with external control box for pump • Level measuring device

Technical Data Type LD02 ___ Measuring range water level 20 cm ... 1 m, (opt. 2 m) Measuring range flow 0.01 ... 150 l/s, depend. on size meas. box/weir Resolution 0.5 % Accuracy measurement water level 1 mm, opt. 0.5 mm Operating temperature range 0 ... 60 °C Output - RS485, bus-capable - VW, 642...1000 Hz vibrating wire compatible (option) - 4 ... 20 mA (option) all outputs galvanically separated Overvoltage protection installed, 2.5 kA Maximum cable length RS485: max. 1200 m VW: 2000 ... 5000 m Supply/current consumption 230 V / 40 mA Weight: Electronic unit 1.2 kg Measuring box acc. to model 2.5 kgs ... 50 kgs Dimensions: Electronic unit approx.250 ٱ x 220 x 120 mm Measuring box acc. to model, e.g. 50 x 50 x 35 cm or 50 x 200 x 50 cm (also Venturi possible)



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