differential pressure transmitter explosion-protected...

DIFP20

Differential pressure transmitter

explosion-protected, explosion-proof enclosure

B 403023.0

Operating Instructions

2014-03-18/00556414

DANGER!

Failure of the differential pressure transmitter or an instrument attached to it

could possibly lead to dangerous malfunctions! Suitable preventive measures

must be in place to prevent this from happening.

NOTE!

Please read these Operating Instructions before placing the instrument in

operation. Keep the Operating Instructions in a place which is accessible to

all users at all times.

All necessary settings are described in this manual. If any difficulties should

nevertheless arise during start-up, please do not manipulate the unit in any

way. You could endanger your rights under the instrument warranty!

Please contact the nearest subsidiary or the head office in such a case.

3.2 Order details ...................................................................................... 10

3.3 Accessories ....................................................................................... 11

3.4 Software ............................................................................................ 11

3.5 Dimensions ........................................................................................ 12

4

Technical data ....................................................................

15

4.1 General .............................................................................................. 15

4.2 Input ................................................................................................... 16

4.3 Output ................................................................................................ 16

4.4 Voltage supply ................................................................................... 16

4.5 Mechanical properties ....................................................................... 16

4.6 Ambient conditions ............................................................................ 17

4.7 Accuracy ............................................................................................ 18

4.8 Approvals/marks of conformity ......................................................... 19

5

Mounting .............................................................................

21

5.1 Before mounting ................................................................................ 21

5.2 Unscrewing the front ring or housing cover ...................................... 21

5.3 Rotating the LCD (display) ................................................................. 22

5.4 Rotating the enclosure ...................................................................... 23

5.5 Pressure connection .......................................................................... 23

5.6 Holder for wall and pipe mounting .................................................... 24

5.7 Level measurement with diaphragm seals ........................................ 25

5.8 Hazardous (Ex) area mounting .......................................................... 27

6

Installation ..........................................................................

29

6.1 Installation instructions ...................................................................... 29

6.2 Cable gland ....................................................................................... 32

Contents

1 Safety information ............................................................... 5

1.1 Warning symbols ................................................................................. 5

1.2 Note symbols ....................................................................................... 5

2 General information ............................................................. 7

2.1 Scope of application ............................................................................ 7

2.2 Scope of delivery ................................................................................. 7

3 Instrument identification ..................................................... 9

3.1 Nameplate ........................................................................................... 9

Contents

7

Operation ............................................................................

35

7.1 Display ............................................................................................... 35

7.2 Operation with rotary knob or with setup program ........................... 36

7.3 The level concept .............................................................................. 37

8

Maintenance .......................................................................

43

8.1 Eliminating errors and faults .............................................................. 43

9

Declaration of Conformity .................................................

45

10

Type Examination Certificate ...........................................

47

5

1 Safety information

1.1 Warning symbols

DANGER!

This symbol indicates that personal injury caused by electrical shock may occur if the

respective precautionary measures are not carried out.

CAUTION!

This symbol in connection with the signal word indicates that damage to assets or data

loss will occur if the respective precautionary measures are not taken.

1.2 Note symbols

NOTE!

This symbol refers to important information about the product, its handling, or additional

use.

1 Safety information

6

7 7

2 General information

2.1 Scope of application General information

The Arkon DIFP20 differential pressure transmitter combines maximum precision with

simple operation. It is used to measure the differential pressure of gases, vapors and

liquids. The integrated LCD shows measurement values and device data.

The enclosure and sensors are made from high-quality stainless steel. It is also possible to

connect remote seals for special process engineering applications (see data sheets 409772

to 409784).

The transmitter is programmable, making it readily adaptable to a variety of different

measurement tasks. A user-friendly setup program is available as an accessory, for operation

via interfaces. A rotary knob ensures highly convenient and fast local, manual operation.

Use in "Ex areas"

The differential pressure transmitter is approved for use in hazardous "Ex areas". The

instrument is explosion-proof and can be mounted in Zone 1.

2.2 Scope of delivery Operating instructions B 403023.0

Operating instructions are a guide for mounting, electrical connection, starting up and

operating the Arkon DIFP20. Calibration certificate

The differential pressure transmitter comes with a calibration certificate and a SETUP

printout. These documents contain information about the set parameters or measured

parameters for the relevant differential pressure transmitter.

If the calibration certificate is lost, or if you need another copy, this can be ordered from

Arkon. Please provide the serial number of the differential pressure transmitter ("F-Nr" on the

nameplate). Your supplier's address can be found on the back of the manual.

Setup program

The setup program is available as an accessory: Part no. 00537577

The setup program provides a convenient way to check and adjust all the parameters of the

differential pressure transmitter. It also includes additional functions such as:

• Recording measurement values

• Graphical presentation of temperature and pressure

• Extensive diagnostic messages

• Display of the complete order code and instrument configuration (for reordering).

The setup program accesses the differential pressure transmitter via

• the Arkon interface (standard)

• or the HART® interface (optional)

8 8

2 General information 3 Instrument identification

CAUTION!

The Arkon interface must not be used in hazardous (Ex) areas!

These instruments must only be operated with the rotary knob!

PC interface cable

Available as an accessory: PC interface cable including USB/TTL converter and two adapters

(USB connecting cable), part no. 00456352.

The PC interface cable can be used to connect the differential pressure transmitter to the

USB interface of a PC via the Arkon interface.

HART® modem

Available as an accessory: HART® modem for USB, part no. 00443447.

The HART® modem can be used to connect the differential pressure transmitter with the

USB® interface of a PC via the HART® interface. Remote seals

Available as an accessory: See data sheets 409770 to 409786.

Remote seals are used for adaptation to special applications, when conventional pressure

connections cannot be used.

CAUTION!

Remote seals are installed in the factory and must not be separated from the differential

pressure transmitter!

9 9

2 General information 3 Instrument identification

a

3.1 Nameplate Enclosure

Marking on the enclosure of the differential pressure transmitter:

(2)

(4)

(6)

(1)

(3)

(5)

(7)

DIFP20 403023/x TN 12345678 CAL 0...1 bar

-1...1 bar DC 11.5...36 V 4...20 mA HART

F-Nr: 0012345601010300001

II 1/2G Ex d IIC T6...T4 Ga/Gb

II 2D Ex t IIIC T105°C Db

-40°C T 60°C (T6)

/70°C (T5) /85°C (T4)

IP66 Baujahr 2010

SEV 10 ATEX 0127 X

(1)

Type

(2)

Part no.

(3) Factory setting for measuring range (4) Nominal measuring range

(5) Voltage supply (6) Output signal

(7) Seriela number

Date of manufacture

The date of manufacture (year and calendar week) of the instrument in encoded in the serial

number. Numbers 12 to 15 identify the year of manufacture (here 10 is 2010) and the

calendar week (here 30).

10 10

3 Instrument identification 3 Instrument identification

3.2 Order details

(1) Basic type

403023 Arkon DIFP20 - Differential pressure transmitter, Ex-protected,

explosion-proof enclosure

(2) Basic type extension

0 None

9 Special design

(3) Display

0 Without display

1 With display

(4) Operation

0 Without control knob

1 With control knob

(5) Nominal measuring range of input

530 -10 to +10 mbar DP

531 -1 to +1 bar DP

532 0 to 1 bar DP

533 -1 to +6 bar DP

534 -1 to +100 bar DP

(6) Output

405 4 to 20 mA two-wire

410 4 to 20 mA two-wire with HART®

(7) Process connection

511 2× pressure connection 1/4-18 NPT, to EN 837

998 Suitable for connecting to a diaphragm seal

(8) Process connection material

20 Stainless steel

80 Tantaluma

82 Hastelloy® C276, mat. no. 2.4819a

(9) Measuring system filling medium

01 Silicon oil

02 Halogenated oil

(10) Extra codes

000 None

100 Customized settingb

226 With GOST-R approval

227 With INMETRO approval

624 Free of oil and grease

633 With mounting kit for wall and pipe mounting

634 With TAG number (explain TAG no. by order)

635 With manufacturer declaration NACEc

681 Extended admissible ambient temperature

11 11


694 Increased nominal pressure PN420d

12 12


a Not for nominal measuring range 530 (-10 to +10 mbar DP). b Please specify required setting in plain text. For factory setting, see "Accuracy" section in data sheet. c Only with process connection material 82 (NiMo). d Only in conjunction with nominal measuring range 532 (0 to 1 bar) or 533 (-1 to +6 bar) or 534 (-1 to +100 bar).

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

Order code / - - - - - - - / ...

Order example 403023 / 0 - 1 - 1 - 532 - 405 - 511 - 20 - 01 / 000

3.3 Accessories

Article Part no.

PC interface with USB/TTL convertera 00456352

HART® modem USBb 00443447

SET oval flange 1/2" NPT/accessories set 7/16-20UNF 00543775

Mounting kit, set includes 7/16-20 UNF screws 00543777

Data Sheet

Manifolds 409706

Pressure separator with milk pipe fitting DIN 11851 409772

Pressure separator with clamp connection 409774

Pressure separator with DRD flange or Varivent connection 409776

Pressure separator with ISS connection or SMS connection or RJT connection and

slotted ring nut

409778

Diaphragm chemical seals 4MDV-10 409780

Pressure separator with male thread ISO 228/1 or ANSI B 1.201 409782

Pressure separator with flange connection EN 1092-1 with sealing lip Form B1 409784

Pressure separator with flange connection to ANSI B 16.5 with sealing lip Form RF 409786

Ex-i Power supply/input isolating amplifier 707530

a The PC interface cable is the connection between the Arkon interface of the differential pressure transmitter and

the USB interface of a PC. b The HART® modem is the connection between the HART® interface of the differential pressure transmitter and

the USB interface of a PC.

3.4 Software

Article Part no.

Arkon Setup DIFP20 series 00537577

13 13


3.5 Dimensions

A

A = Cable gland M20 × 1.5

14 14


For extra code 694 (increased nominal pressure PN420)

A

deep

for mounting

A = Cable gland M20 × 1.5

3 Instrument identification 4 Technical data

14

4 Technical data 4 Technical data

15 15

4.1 General

Reference conditions DIN 16086, EN 60770 and DIN IEC 770/5.3

Sensor system

Pressure transfer medium

For measuring system 1 filling medium

For measuring system 2 filling medium

Permissible load changes

Siliziumsensor mit Edelstahl-Trennmembrane

Silicon oil

Halogenated filling oil

> 10 million

Location

Mounting position

Calibration position

Position-dependent zero point offset

Any

Device standing vertically, process connection on bottom

1 mbar

Zero point correction possible locally or via setup

Display

Alignment

Size

Color

LCD, two-line with bar graph

Display unit can be rotaded 90° at a time

Case can be rotaded ±160°

Display field 22 mm × 35 mm/font size 7 mm/5 digits

Black

Measurement unit display options

Input pressure

Measurement value

Output current

Sensor temperature

inH2O, inHg, ftH2O, mmH2O, mmHg, psi, bar, mbar,

kg/cm2, kPa, Torr, MPa, mH2O

% or scaled with a freely adjustable unit

mA

°C, °F

Additional display data Minimum pressure, maximum pressure, error, overrange,

underrange, operating hours

Operation

Local

Setup program

With rotary knob and LCD

Via interface

Interface

Standard

For output 410 (4 to 20 mA with HART®)

Arkon interfacea, socekt on front of instrument

Arkon interfacea and HART® interface

Explosion protection EC type examination certificate SEV 10 ATEX 0127 X

II 1/2G Ex d IIC T6 to T4 Ga/Gb

II 2D Ex t IIIC T105 °C Db

a Neither the Arkon interface nor the HART®

interface must be used in potentially explosive atmospheres! In

this situation, the instrument must only be operated with the rotary knob!

NOTE!

For special conditions see chapter 4.6 "Ambient conditions", page 17.


16 16

4.2 Input

Nominal pressure

Nominal measuring range

Nominal pressure (bar)

-10 to +10 mbar

DP

-1 to +1 bar

DP

0 to 1 bar

DP

-1 to +6 bar

DP

-1 to +100 bar

DP

PN2 PN210 PN210, optional PN420

4.3 Output

Analog output

For output 405

For output 410

Step responsing time T60

Damping

4 to 20 mA two-wire

4 to 20 mA two-wire with HART®

190 ms without damping

adjustable 0 to 100 s

Burden

For output 405 (4 to 20 mA)

For output 410 (4 to 20 mA with HART®)

Burden (UB-11.5 V) ÷ 0.022 A

Burden (UB-11.5 V) ÷ 0.022 A;

also: min. 250 , max. 1100

4.4 Voltage supply

Voltage supply DC 11.5 to36 V

4.5 Mechanical properties

Process connection

Material

Membrane

For process connection 20 (stailess steel)

For process connection 82 (Hastelloy®)

For process connection 80 (Tantalum)

Flange

Seal

Stainless steel 316L

Hastelloy® C276, mat. no. 2.4819

Tantalum

Stainless steel 316

PTFE

Case

Case material

Cover material

Control knob material

For operation 0 (without control knob)

For operation 1 (with control knob)

Precision casting 1.4408

Precision casting 1.4408, seal FPM

-

PA

Explosion protection EG type examination certificate SEV 10 ATEX 0127 X

II 1/2G Ex d IIC T6 to T4 Ga/Gb

II 2D Ex t IIIC T105 °C Db


17 17

Weight

For extra code 694

(increased nominal pressure)

Approx. 4.0 kg

The instrument weight increases by approx. 3.8 kg.


18 18

4.6 Ambient conditions

Permissible

temperatures

In Operation

Storage

Version Category Max. medium

temperature

Ambient

temperaturea

Extended ambient

temperature

(extra code 681)a, b

II 1/2G Ex d T6 +70 °C -40 to +60 °C -50 to +60 °C

T5 +85 °C -40 to +70 °C -50 to +70 °C

T4 +110 °C -40 to +85 °C -50 to +85 °C

II 1/2D Ex d T105 °C +100 °C -40 to +85 °C -50 to +85 °C

-40 to +85 °C

Permissible relative humidity

In operation

Storage

100 % incl. condensation on instrument outer sleeve

90 % without condensation

Permissible mechanical loading

Vibration performance

Shock resistance

2 g, 10 to 500 Hz to DIN EN 60770-3

15 g for 6 ms to IEC 60068-2-29

Electromagnetic compatibility

Interference emission

Interference immunity

To EN 61326

Class B

Industrial

Protection IP 66 to DIN EN 60529

a Restricted function below -20 °C: stationary use, increased danger of broken cable, display does not function;

below -30 °C operation is not possible. b In the range of -40 to -50 °C, the cover with the instrument viewing pane must also be protected against

mechanical shock and impact. For details please contact Arkon.


19 19

4.7 Accuracy

Differential pressure

Nominal measuring

range

-10 to +10 mbar

DP

-1 to +1 bar

DP

0 to 1 bar DP -1 to +6 bar

DP

-1 to +100 bar

DP

Factory setting

for measuring range

0 to 10 mbar 0 to 1 bar 0 to 1 bar 0 to 6 bar 0 to 100 bar

Minimum span 1 mbar 5 mbar 5 mbar 0,350 bar 2,5 bar

Turndown ratio (r) r 20 r 400 r 200 r 20 r 40,4

Linearity for a linear

characteristic

as %

of the set span

0.1 %

for r 2

0.07 %

for r 10

0.07 %

for r 10

0.07 %

for r 5

0.07 %

for r 5

r × 0.05 %

for 2 r 20

r × 0.007 %

for 10 r 400

r × 0.007 %

for 10 r 200

r × 0.014 %

for 5 r 20

r × 0.014 %

for 5 r 40.4

Accuracy at +20 °C

as %

of the set span

0.2 %

for r 2

0.1 %

for r 10

0.1 %

for r 10

0.1 %

for r 5

0.1 %

for r 5

r × 0.1 %

for 2 r 20

r × 0.01 %

for 10 r 400

r × 0.01 %

for 10 r 200

r × 0.02 %

for 5 r 20

r × 0.02 %

for 5 r 40.4

Accuracy at

-20 to +85 °C

as %

of the set span

0.5 %

for r 2

(up to +60 °C)

0.2 %

for r 10

0.2 %

for r 10

0.2 %

for r 5

0.2 %

for r 5

r × 0.25 %

for 2 r 20

(up to +60 °C)

r × 0.02 %

for 10 r 400

r × 0.02 %

for 10 r 200

r × 0.04 %

for 5 r 20

r × 0.04 %

for 5 r 40.4

Accuracy at -

40 to +20°C

as %

of the set span

1.0 %

for r 2

0.6 %

for r 10

0.6 %

for r 10

0.6 %

for r 5

0.6 %

for r 5

r × 0.5 %

for 2 r 20

r × 0.06 %

for 10 r 400

r × 0.06 %

for 10 r 200

r × 0.12 %

for 5 r 20

r × 0.12 %

for 5 r 40.4

Accuracy at

+60 to +85°C

as %

of the set span

2.0 %

für r 2

r × 1.0 %

for 2 r 20

Effect of static

pressure P (bar)

as % of the nominal

measuring range

1 % P ×

0.0005 %

P ×

0.0003 %

P ×

0.0025 %

P × 0.001 %

Long-term stability

as % of the nominal

measuring range

0.6 %/year 0.1 %/year 0.1 %/year 0.1 %/year 0.2 %/year


20 20

4.8 Approvals/marks of conformity

Mark of

conformity

Testing

laboratory

Certificate/

certification number

Test basis Valid for

ATEX electrosuisse SEV 10 ATEX 0127 X EN 60079-0

EN 60079-1

EN 60079-26

EN 60079-31

403023/...

INMETRO CEPEL CEPEL 13.2214X IEC 60079

IEC 60529

Extra code 227

GOST-R

4 Technical data 5 Mounting

20

5 Mounting 5 Mounting

21 21

5.1 Before mounting

DANGER!

he system must be depressurized before mounting Arkon DIFP20

differential pressure transmitter!

In potentially explosive atmospheres, only open the differential pressure transmitter once it

has been de-energized!

NOTE!

The installation location should be easily accessible, if possible in the vicinity of the measu-

ring point, and low in vibration. The permissible ambient temperature must be maintained

(note any possible heat radiation).

The Arkon DIFP20 differential pressure transmitter can be mounted above or below the

pressure tapping point.

5.2 Unscrewing the front ring or housing cover The front ring and rear housing cover can be unscrewed once the locking screws (1) have

been released. A 1.5AF hex key is required to release the locking screws.

NOTE!

Use a screwdriver, or similar, for unscrewing.

Only tighten by hand!

(1)


22 22

5.3 Rotating the LCD (display) Installation position

The nominal position of the Arkon DIFP20 differential pressure transmitter is standing

vertically.

Depending on the specific features of the measuring point, the differential pressure

transmitter can be installed in any other location. The LCD display can be rotated in 90°

increments to reach the preferred installation position.

✱ Unscrew the front ring, see chapter 5.2 "Unscrewing the front ring or housing cover", page

21.

✱ Pry out the electronics module with a narrow (small) screwdriver.

✱ Rotate the electronics module to the preferred position (in 90° increments) and reinsert it.

✱ Screw on the front ring finger-tight.

✱ Securely tighten the locking screw.


23 23

5.4 Rotating the enclosure The enclosure can be rotated ± 160°.

✱ Loosen the threaded pin with a 1.5 mm AF hex key

(approx. 1/2 revolution is enough).

✱ Rotate the enclosure to the preferred position.

✱ Retighten the threaded pin securely.

5.5 Pressure connection Seals

Operating conditions (for example material compatibility) must be considered when selecting

the seal.

Check for leaks

If the pressure connection is made, it must be checked for leaks.

DANGER!

Improper operation of the shut-off fittings can result in physical injury or cause considerable

damage to equipment!

Follow the specified order for opening and closing valves!

For use in toxic media the device must not be vented!


24 24

Differential pressure

NOTE!

The connection for higher pressure is marked "H".

5.6 Holder for wall and pipe mounting (Part no. 00543777)

Mounting example


25 25

H

h (

leve

l)

5.7 Level measurement with diaphragm seals

For DP level measurement of liquids in a closed tank with diaphraghm seals,

the DP transmitter has to be mounted according to the following graphic.

• PLUS input side at top

• MINUS input side at bottom

• DP transmitter between top and bottom, or at bottom.

The exact position of the DP transmitter is not relevant.

diaphr. seal

+ h (4..20 mA) I

p -

mounting bracket

5.7.1 General notes

A pressure transmitter with capillaries and diaphragm seals forms a closed system, which is

filled with oil under vacuum.

• This closed system must not be opened.

• Do not clean or touch the membranes of the diaphraghm seals with hard or sharp tools.

• Remove the membrane protection just before installation.

• Bending radius for capillaries: 100 mm.

• Avoid vibrations during operation as much as possible.

• The capillaries on both sides should have the same temperature during operation.

If necessary, use isolation in cool or warm environment.


26 26

5.7.2 Configuration Configuration without level input (blind setting)

Range Start (4 mA):

Set P5 [mbar]

=

H × oil × g × 0.01

Range End (20 mA):

Set P6 [mbar] = (H × oil - hmax × liq) × g × 0.01

Explanation:

H [mm] = vertical spacing of diaphragm seals

hmax [mm]

oil [g/cm3]

=

=

maximum level of measured liquid, 0<hmaxH

0.96, density of oil in capillary

liq [g/cm3] = density of measured liquid

g [m/s2] = 9.81, gravitational acceleration

Example:

Tank height = 10 m

H [mm] = 9000

hmax [mm] = 8000

liq [g/cm3] = 1.00, density of water, 4 °C

Set P5 [mbar] = 9000 × 0.96 × 9.81 × 0.01 = 847.6

Set P6 [mbar] = (9000 × 0.96-8000 × 1.00) × 9.81 × 0.01 = 62.8

Result:

The ouput signal of the DP transmitter is proportional to level h:

4 mA for empty tank

20 mA for full tank

Configuration with level input

Range Start (4 mA):

When tank is empty:

Set P2 [mA] = 4.00

Range End (20 mA):

When tank is full:

Set P3 [mA] = 20.00

Result:

The ouput signal of the DP transmitter is proportional to level h:

4 mA for empty tank

20 mA for full tank


27 27

5.8 Hazardous (Ex) area mounting

(2) (3)

(4) (5)

+

-

(1)

(1) Hazardous (Ex) area Zone 0 / 21

(2) Hazardous (Ex) area Zone 1 / 21

(3) Non-hazardous area

(4) Burden (optional for the HART® interface)

(5) Power supply

5 Mounting 6 Installation

28

6 Installation 6 Installation

29 29

6.1 Installation instructions

GEFAHR!

The electrical connection must only be implemented by suitably qualified personnel!

Ground the instrument!

Only use cable entries or glands, blanking plugs, etc., that are suitable for the "explosion-

proof enclosure d" protection type!

The cables or leads must be suitable for the ambient conditions!

Connection openings on the instrument that are open must be closed with suitable

blanking plugs!

General

Applicable requirements must be followed for the electrical connection, especially in a

potentially explosive atmosphere:

Regulation concerning electrical systems in areas with an explosion hazard (Elex V).

Requirement for project planning, selecting and setting up electrical systems in areas with an

explosion hazard (IEC 60079-14:2007).

EC type examination certificate

Electromagnetic compatibility meets the requirements of EN 61326.

Der Messumformer ist für den Einsatz in SELV- oder PELV-Stromkreisen nach Schutzklasse 3

geeignet.

Apart from faulty installation, incorrect settings on the instrument may also affect the proper

functioning of the subsequent process or lead to damage. You should therefore always pro-

vide safety equipment that is independent of the instrument and it should only be possible for

qualified personnel to make settings.

Conductor cross-sections and ferrules

Permissible cross-section

Without ferrule (for rigid cable only)

0.2 to 1.5 mm2

AWG 24 to 16

With ferrule (for rigid or flexible cable)

0.25 to 0.75 mm2


30 30

Danger

The Arkon interface must not be used in potentially explosive atmospheres!

The differential pressure transmitter power supply must neither exceed nor fall below the

following values:

DC 11.5 to 36 V

NOTE!

Connecting the HART® communicator or HART® modem is optional.

To ensure error-free communication, a minimum burden must be present on the signal

circuit; see below.


31 31

6.1.1 Connection diagram

(2) (3)

(4)

+ (5) -

(6)

(7)

(1) (8)

(9)

(1) Hazardous (Ex) area Zone 0/21

(2) Hazardous (Ex) area Zone 1/21

(3) Non-hazardous area

(4) Burden for HART® (UB-11.5 V) ÷ 0.022 A additional min. 250 , max. 1100

(5) Power supply

(6) Indicator or recorder, controller, PLC, etc.

(7) Additional instruments

(8) HART® modem

(9) PC or notebook


32 32

6.2 Cable gland General information

• The cables or leads must be suitable for the ambient conditions

• Permissible cable diameters range from 7.5 to 11.9 mm

• Max. wire cross-section 1.5 mm2

• Keep signal leads separate from cables with voltages of 60 V

• Use a shielded cable with twisted wires

• Avoid the vicinity of large electrical systems

• The full specification as per HART

Version 5.1, will only be achieved with a shielded

cable.

2

1

3

~ 270°

(1) The connecting cable must extend at least 5 mm into the enclosure.

(2) Tighten the screw fitting by hand until you encounter resistance.

(3) Tighten the screw connection about 3/4 revolution with a wrench.


33 33

Connection

✱ Unscrew the housing cover from behind.

See section 5.2 "Unscrewing the front ring or housing cover", page 21.

✱ To connect the connecting cables, see the following illustration.

CAUTION!

Once electrical connection is complete, re-tighten the locking screw of the housing cover!

Terminal assignment

Connection Terminal assignment

Voltage supply DC 11.5 to 36 V 1 L+

2 L-

Output

4 to 20 mA, two wires

Impressed current 4 to 20 mA

in voltage supply

1 L+

2 L-

Current output test connection

Inherent resistance of ammeter 10

TEST +

TEST -

HART® test connection

The burden must be present!

HART +

HART -

Functional ground 3

Grounding or equipotential bonding outside, on the

enclosure


34 34

Operation and test

(1)

(2)

(3)

+

-

1 2 3+ -

(4)

(5)

HART -

HART + Test +

Test -

(1) Total burden: Burden (UB-11.5 V) ÷ 0.022 A;

for HART® in addition: min. 250 , max. 1100

(2) Indicator or recorder, controller, PLC, etc.

(3) Voltage supply: DC 11.5 to 36 V

(4) HART® modem

(5) PC or notebook

35 35

7 Operation

7.1 Display

(1)

(2)

(3)

(6) (5) (4)

(1) Socket for the Arkon setup interface (behind a cover)

(2) Measurement value

(3) Unit of measure

(4) Overrange

(5) Output current (4 to 20 mA)

(6) Underrange

36 36

7 Operation 7 Operation

7.2 Operation with rotary knob or with setup program

(1)

The instrument can be

• operated with the rotary knob (1)

• or with the optional setup program.

Instead of operation by rotary knob, all the actual values and parameters can be displayed

or set very easily, by means of the setup program. In addition, the setup program offers a

series of useful additional functions such as:

• Recording measurement values

• Graphical presentation of temperature and pressure

• Extensive diagnostic messages

• Display of complete order code and instrument configuration (can be printed out, for

example for project documents or reordering).

The setup program can optionally access the instrument through the following interfaces:

• Arkon setup interface.

The PC interface cable with USB/TTL converter (USB connecting cable) is required to

connect the PC with the instrument: part no. 00456352.

• HART® interface.

A HART® modem is required to connect the PC with the instrument: part no. 00443447.

37 37


Rotate and press

Rotate

Select parameters or adjust values.

Press

Confirm parameters or values.

7.3 The level concept

Two levels

Operation is on two levels:

NOTE!

After the instrument is turned on, it is at the display level. You can go to the parameter level

through the following operation.

Display level

(normal display)

> 3 s

Parameter level

Cancel

or timeout

> 3 s

< 1 s > 3 s

Find Select Save

Parameter

38 38


7.3.1 The display level

The measured pressure and other parameters are shown at display level. The output current

is shown as a percentage in a bar diagram on the third line of the display.

It is not possible to change the parameters at display level!

Action Display

(example)

Explanation

Display of pressure with unit of measure.

Display of measurement value as a %

or

Measurement value scaled with a freely selectable unit of

measure.

Display of output current in mA.

Display of sensor temperature in °C or °F.

Display of the saved minimum pressure in the selected unit of

measure.

Display of the saved maximum pressure.

Display of the pressure value and sensor temperature in the

selected unit of measure.

39 39


7.3.2 The parameter level

Instrument parameters can be displayed and changed at parameter level.

Action Display

(example)

Explanation Selectiona

P min

Saved minimum pressure

Reset by

> 3 seconds

P max

Saved maximum pressure

Reset by

> 3 seconds

P0 Den

"Density" density correction

0.01 to 1.00 to 99.99

P1 Uni

"Unit" unit of measure for

pressure

inH2O

inHG

ftH2O

mmH2O

mmHG

PSI

bar mbar

kg/cm2

kPa

TORR

MPa

mH2O

P2 mA

Range start current

4.00 to 20.00 mA

P3 mA

Range end current

4.00 to 20.00 mA

P4 sec

Damping

0.0 to 100.0 s

P5 RS

Range start



Action Display (example)


P6 RE

Range end


P7 Zero

Zero-point adjustment

Current pressure

P8 mA

Current sensor

3.60 to 4.00 to 21.60 mA

P9 Err

Current in case of error

ErLo = 3.6 mA

ErHi = 21.6 mA

LASt = Last value

P10 Key

Keyboard lock

O = No lock

LA = All, interface free

LO = All, without range start

LS = All, without range start and

end

LALL = All, incl. interface

P11 Chr

"Characteristic" curve

Lin = Linear

SLin = Linear until start of

root extraction

SoFF = Off until start of

root extraction

P12 %

Point at which root extraction

begins

5.0 to 9.4 to 15.0%

of nominal measuring range

P13 SWV

Software version

Editing not possible

P14 Uni

Unit of measure for

temperature

°C / °F

P15 OFF

Pressure value offset

(zero point offset)


40


41

Action Display

(example)


P16 SCS

Scaling start

-9999 to 0 to 9999

P17 SCE

Scaling end

-9999 to 100 to 9999

P18 SCD

Scaling decimal point

Auto = automatic

0 = no places after decimal point

1 = 1 place after decimal point

2 = 2 places after decimal point

3 = 3 places after decimal point

P19 %

Unit for scaling

% (factory setting) kg/sec

kg/min

kg/h

t/min

t/h

l/sec

l/min

l/h

m3/sec

m3/min

m3/h

L

m3

UsrTXT

P20 h

Operating hours

Editing not possible

a Factory setting is shown in bold.


42

43

8 Maintenance

8.1 Eliminating errors and faults

Error/fault Possible cause Remedy

Display: none No power supply Turn on the power supply

Instrument faulty Send the instrument to the supplier

for repairs

Display: Overrange,

overpressure

Bring the pressure back into the

measuring range or adjust the

measuring range Display: Underrange,

underpressure

Display: Pressure can no longer be

displayed,

overpressure

Adjust scaling or unit of measure

Display: Pressure can no longer be

displayed,

underpressure

Display: The connection between sensor

and electronic is broken

a) Proof the plug connection at the

back of the electronic module

b) Send the instrument to the sup-

plier for repairs

Display: An error was discovered in the

electronics during the self test

Send the instrument to the supplier

for repairs

Display: Temperature sensor faulty Send the instrument to the supplier

for repairs

The rotary

knob is not

responding

Operator lockout Remove operator lockout

Instrument faulty Send the instrument to the supplier

for repairs

8 Maintenance 9 Declaration of Conformity

44

9 Declaration of Conformity 9 Declaration of Conformity

45

9 Declaration of Conformity 10 Type Examination Certificate

46

10 Type Examination Certificate 10 Type Examination Certificate

47


48


49

10 Type Examination Certificate

50

differential pressure transmitter explosion-protected...

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