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TRANSCRIPT
Flow Measurement Precision under any conditions
2
Content
3 — 5 KRACHT Flow Measurement
6 — 7 Accuracy Characteristics
8 — 13 Product Portfolio
14 — 17 Electronics
18 Quality assurance
19 Distribution
Flow Measurement
3Flow Measurement
KRACHTFlow Measurement
Development Flow Measurement - that means high-dynamic, precise volume and flow measurements, evaluated according to the applica-tion - from a simple display unit to an intelligent microcontrol-ler solution.
The basis for all this is the KRACHT volume counter. This flow measure product presents the successful result of our long-experienced engineers.
The sophisticated tooth system geometry in connection with application-specific bearings are made for the volume counter being an absolute „All-rounder“. The volume counter covers a wide medium range: to go from hydraulic oil to printing ink, from gear grease to water based lacquer.
The highly-efficient KRACHT electronics takes the signals given by the volume counter and ensures that processes are exactly monitored, regulated and controlled. For example, in process technology as micro-controller for metering and mixing sys-tems, or as flexible measuring and recording electronicsfor differentiated applications in test bench technology.
» You can only correctly produce that has been correctly measured in advance. «(A basic rule of measurement and control technology.)
Gear Type Flow Meter VC
DesignThe core of the design department is the perfect support and updating of all products. Rapid adaptation of standard meters to customer wishes with the related services is supported by integrated data-engineering dialogue. Based on direct colla-boration (simultaneous engineering), development times for specific customer solutions have been significantly shortened.
Constantly updating and using high-end 2D and 3D software (Unigraphics) has ensured that the increasing future demands are optimally solved.
The designing results during the design process are inspected and optimised by using the finite element method (FEM) along with other calculation methods. Furthermore, our flow measurement units are put through 100% checks in our own test site. That ensures the high quality standard of our pro-ducts and guarantees ideal functionality.
Production The components used in our meters are manufactured in all frame sizes from cast along with stainless steel and aluminium. The dimensional accuracy of the components throughout the entire material spectrum lies in the μm range.
The housings and covers are fabricated entirely in our highly-modern machining centres. The coolant temperature constan-cy, a cooling system for the ball screws and a linear system for all axes secures precise manufacture of all components. To reduce the clamping and setup times, all machines are equip-ped with up to 32 multiple palettes and have tool monitoring systems for automatic processing. The processing tools being used are ceramic, CBN or TIN coated, which is another tribute to the high KRACHT quality.
We manufacture the gears on our ultra-modern gear hobbers, rolling/profile grinding machines and cylindrical outer and inner grinding machines. Pre-turned blanks are prepared and machined on CNC grinding machines with vertical workpiece axes. The outer cylindrical grinding is performed on a CNC angular plunge-cut or cylindrical outer grinding machines. This grinding technology is highly versatile while simultane-ously impressive with its enormous productivity. We are able to grind nearly all workpiece contours with one single grindstone – and that with one single fixing. After completing the cylind-rical outer grinding, the gear components are finally polished on CNC flank sanders using the generation grinding method or profile grinding method.
The measuring devices integrated in the machine setup faci-litate measuring all relevant gear teeth sizes. That leads to a considerable reduction in the setup times when setting up new machining jobs.
4 Flow Measurement
The current average age of the machines is approx. 2 years.
Flow measurement
Application areas
— Polyurethane plants — 2 or multi-component dosing and mixing plants — Test bench construction— Fuel consumption measurement— Shipbuilding— Rolling mill technology— Machine tools— and others
5Flow Measurement
We would be glad to personally present you our references with leading manufacturers. Feel free to get in touch with us.
Based on a number of applications, meanwhile meters for various application areas with different media have been developed.
6 Flow Measurement
Accuracy Characteristics
1. Cross-Validation The flow meter device is measured against a DKD (Deutscher Kalibrierdienst = German CalibrationService) calibrated meter and confirmed analogously.
2. Characteristic Curve Establishment
The meter is tested against a cylinder whose volume is defined. The precise characteristic curve is docu-mented here as a model for a flow meter VC 1, series 1.
Both check variations include the control of all important landmarks. If a measuring value does not corres-pond to the target values, the flow meter will be reworked.
3. DKD-Calibration on request
1.04
1.035
1.03
+ 0.3%
Vgz = 1.036
— 0.3 %
0 10 20 30 40 50 60 70 80
Flow rate Q
Vo
lum
e p
er p
uls
e
l/min
cm³
Test Bench Accuracy Characteristics
7Flow Measurement
Flow Measurement - that means high-dynamic, precise volume and flow measurements, evalua-ted according to the application - from a simple display unit to an intelligent microcontroller solution.
Pressure Drop
Parameter: Viscosity (mm²/s) The pressure drop is documented here as a model for a flow meter VC 0.2, series 1.
Flow rate QVC 0.2
Pres
sure
dro
p Δ
p
l/min
16
14
12
10
8
6
4
2
0
0 2 4 6 8 10 12 14 16
3000 2000 1000
600
300
100
34
bar
Flow Meters
Series Gear Type Flow Meters
VCGear Type Flow Meters
VCAGear Type Flow Meters
VCNGear Type Flow Meters
VCGGear Type Flow Meters
VCLScrew-type Flow Meters
SVCTurbine Flow Meters
TM
Measuring range (l/min)
0.008 … 700 0.02 … 200 0.02 … 10 1 … 240 0.05 ... 2 1.0 … 1500 4.6 ... 9167
Working pressure(bar)
… 400 … 200 … 160 … 315 … 400 … 250 … 400
Fluid temperature(°C)
−30 … 220 −10 ... 80 −10 … 80 −15 … 120 … 80 −30 … 150 −30 ... 400
Housing material Spheroidal cast iron or stainless steel
Aluminium Stainless steel Spheroidal cast iron Stainless steel Spheroidal cast iron Stainless steel
8 Flow Measurement
Product Portfolio Gear Type Flow Meters VC Screw-type Flow Meters SVC Turbine Flow Meters TM VOLUMEC VOLUTRONIC®
VOLUCODEC Electronics
Flow Meters
Series Gear Type Flow Meters
VCGear Type Flow Meters
VCAGear Type Flow Meters
VCNGear Type Flow Meters
VCGGear Type Flow Meters
VCLScrew-type Flow Meters
SVCTurbine Flow Meters
TM
Measuring range (l/min)
0.008 … 700 0.02 … 200 0.02 … 10 1 … 240 0.05 ... 2 1.0 … 1500 4.6 ... 9167
Working pressure(bar)
… 400 … 200 … 160 … 315 … 400 … 250 … 400
Fluid temperature(°C)
−30 … 220 −10 ... 80 −10 … 80 −15 … 120 … 80 −30 … 150 −30 ... 400
Housing material Spheroidal cast iron or stainless steel
Aluminium Stainless steel Spheroidal cast iron Stainless steel Spheroidal cast iron Stainless steel
9Flow Measurement — Product Portfolio
Our expertise guarantees functional solutions. Standardised and application optimised.
Gear Type Flow Meters
VCA / VCNVCA 0.04 / VCA 0.2 / VCA 2 / VCA 5 – AluminiumVCN 0.04 / VCN 0.2 – Stainless steel
Measuring range 0.02 … 200 l/min
Measuring ratio 1 : 200
Working pressure … 200 bar
Viscosity 20 … 4 000 mm²/s
Fluid temperature −10 … 80 °C
Measuring accuracy up to ± 1 % deviation from measured value
Electrical output 1 incremental signal
Option ATEX type (From size 2)
Applications — Lubrication oil control— Measuring of fuel consumption— Cylinder stroke measurement
Gear Type Flow Meters
VCVC 0.025 … VC 16 - Spheroidal cast ironVC 0.025 … VC 5 - Stainless steel
Measuring range 0.008 … 700 l/min
Measuring ratio 1 : 300
Working pressure … 400 bar
Viscosity 1 … 1 000 000 mm²/s
Fluid temperature −30°C … 220°C
Measuring accuracy up to ± 0.3% deviation from measured value
Electrical output 2 incremental signals90° out of phase
Option ATEX type
Applications — Measuring of fuel consumption— Curve tracing of hydraulic components — Filling of gear lubricants— Indirect, volumetric cylinder stoke
measurement— Consumption measurement of inks— Ratio measurement in dosing plants for
2- and multiple component media
10 Flow Measurement — Product Portfolio
Gear Type Flow Meters VC
Gear Type Flow Meters VCA / VCN
11Flow Measurement — Product Portfolio
Gear Type Flow Meters
VCLStainless steel
Measuring range 0.05 … 2 l/min
Measuring ratio 1 : 40
Working pressure … 400 bar
Viscosity 20 … 1 000 mm²/s
Fluid temperature … 80 °C
Measuring accuracy up to ± 2 % deviation from measured value
Electrical output 2 incremental signals90° out of phase
Applications Painting technology
Gear Type Flow Meters
VCGSpheroidal cast iron
Measuring range 1 … 240 l/min
Working pressure … 315 bar
Measuring ratio 1 : 40
Viscosity 20 … 4 000 mm²/s
Fluid temperature −15°C … 120°C
Measuring accuracy up to ± 2.5 % deviation from measured value
Electrical output 2 incremental signals 90° out of phase
Applications Ratio measurement in dosing plants for 2- and multiple component media
Gear Type Flow Meter VCG
Gear Type Flow Meter VCL
Turbine Flow Meters
TMTM 0.275 … TM 550 – Stainless steel
Measuring range 4.6 … 9167 l/min
Measuring ratio 1 : 10
Working pressure … 400 bar
Fluid temperature −30 … 400 °C
Measuring accuracy up to ± 0.4 % deviation from measured value
Electrical output 1 incremental signal
Option ATEX type
Applications Flow measurement of waterand cooling lubricants
Screw-Type Flow Meters
SVCSpheroidal cast iron
Measuring range 1.0 … 1500 l/min
Measuring ratio 1 : 150
Working pressure … 250 bar
Viscosity 1 … 1 000 000 mm²/s
Fluid temperature −30°C … 150°C
Measuring accuracy ± 0.2 %
Option ATEX type
Applications — Measuring of fuel consumption— Dosing plants— Test bench construction
Screw-Type Flow Meter SVC
Turbine Flow Meters TM
12 Flow Measurement — Product Portfolio
Valve Position IndicatorValve Position Measuring Instrument
Valve Position Indicator
with Encoder
VOLUMEC VOLUTRONIC® VOLUCODEC
Design Gear type volume counter Gear type volume counter Gear type volume counter
max. flow rate 02: 4 l/min04: 7 l/min5: 150 l/min
0.25 up to 10 l/min 02: 4 l/min04: 7 l/min
max. working pressure 02 / 04: 200 bar5: 300 bar
160 bar 02 / 04: 160 bar
Display mechanical by downstreamelectronic possible
LED
Current-independent display Yes – No
Current-independentposition detection
Yes No Yes
Leakage detection Yes by downstreamelectronic possible
Yes
Reset function at slipping clutch by downstreamelectronic possible
Yes
Calibration to actuator size by gear reducing by downstreamelectronic possible
free programmable
Flow direction must be defined A-B / B-A free programmable
Error message No by downstreamelectronic possible
Yes
6
45
openshut
OS
O = OpenS = Shut
B
C
D
E
F
G
1
A
13
2 4
II
I
90°
±30°
±15°
K
H J
UA
UA
13Flow Measurement — Product Portfolio
Hydraulic Manifolds
HB 4 0311 HB 4 0324Description — double pilot operated check valve for holding the
actuator position— two pressure relief valves for limiting the pressure
caused by increased temperature— throttle valve in port A for speed regulation of the
actuator— check valve for filling the piping to avoid wrong
indications when temperature fluctuates
— check valve in P for holding the actuator position when switching parallel actuators
— check valve in T to avoid indicator fluctuations due to pressure pulsation
— one temperature pressure relief valve for limiting the pressure caused by increased temperature
— throttle valve in port A for speed regulation of the actuator
— check valve for filling the piping to avoid wrong indications when temperature fluctuates
Schematic Schema 0311 Schema 0324Schema 0311 Schema 0324
Plug-On Display
SD 1Local display for all KRACHT flow metersWith plug connect ion according to DIN EN 175301-803With 4-digit LED display for flow rat e or volume
Power supply 18 VDC – 28 VDCoptional 10 – 19 VDC
Display Principle: 7-segment LED, 7.62 mm, red Display: 0.000 … 9999 with floating point Overflow: (>9999) display 9999
Touch panel two buttons behind a screen
Housing Aluminium
Front frame Height without plug approx. 35 mmWidth approx. 60 mm Depth approx. 60 mm
Degree ofprotection
IP 65 (DIN 40050)
Weight Approx. 0.12 kg
Working temperature
0°C … 60 °C
Connections Right angle plug DIN 43650(4-pole), polarized
Output — SD1-R incremental output— SD1-I analogue output 0 – 20 mA or 4 – 20 mA — SD1-K 2 relay contacts 24 VDC/1A
Option SD1-Service with battery pack
14 Flow Measurement — Product Portfolio
Electronics
The plug-on display, the SD 1, is an onsite display that can be used universally for all volume counter series (VC, SVC, TM) with Hirschmann plugs. Flow rate or volume indicators can be optio-nally attached to the display.
The AS 8 microcontroller pro-cesses incremental input signals from the flow measuring devices.The input signals are filtered in the unit, converted, and comput-ed into the physical sizes of flow rate or volumes.
The ASR 14 integrates control, operation and visualisation. The programming in the ASR 14 can be ideally adapted to each application.
The ASR 20 is a combination comprising a control panel anda controller unit. That means numerous fluid-engineering applications can be implemen-ted. Standardised programs are available for various applications.
Display Unit
AS 8Control unit in control panel housing5-digit LED display for flow rate or volume
Power supply 230 VAC, + 6% … – 10% / 50 – 60 Hz, optional 120 VAC, 24 VDC, 12 VDC
Display Principle: 7-segment LED, 13.2 mm, redDisplay: 0.000 ... 9999 with floating pointOverflow (>9999): Display 9999Overflow (< --9999): Display –9999Status display: Illuminating diode K1 and K2 for relay 1 and 2
Touch panel three keys behind the front panel, optional keys on front panel
Housing for switch panel plug-in unit made of plastic
Front frame 96 × 48 mm, DIN 43700
Insertion depth approx. 122 mm with plug board
Cut-out panel section 92 × 45 mm, tolerance + 0.8 x + 0.6 mm
Degree of protection IP 54 in appropriate switch panel mounting
Weight approx. 0.4 kg
Working temperature 0°C … 60 °C
Connections 15 pins terminal connecting block
Output ± 20 mA or 0 … 20 mA or 4 … 20 mAor Voltage output ± 10 V or 0 … 10 V or Serial interface RS 232
Supply 230 V, 50/60 Hz or 120 V, 50/60 Hzor 24 VDC or 12 VDC
Special software for the following applications:— Flow control — Dosing— Cylinder stroke measurement and monitoring— Display and monitoring of added amounts— Display and monitoring of differential amounts— Display and monitoring of mixing ratio— Display and control of mixing ratio
15Flow Measurement — Product Portfolio
Electronics
The plug-on display, the SD 1, is an onsite display that can be used universally for all volume counter series (VC, SVC, TM) with Hirschmann plugs. Flow rate or volume indicators can be optio-nally attached to the display.
The AS 8 microcontroller pro-cesses incremental input signals from the flow measuring devices.The input signals are filtered in the unit, converted, and comput-ed into the physical sizes of flow rate or volumes.
The ASR 14 integrates control, operation and visualisation. The programming in the ASR 14 can be ideally adapted to each application.
The ASR 20 is a combination comprising a control panel anda controller unit. That means numerous fluid-engineering applications can be implemen-ted. Standardised programs are available for various applications.
Control Unit
ASR 14
Power supply 24 VDC
Display LC-Display, black / white,4 × 20 characters, with background lighting
Keyboard 26 function keys (10 with LED)
Housing Control-panel housing
Front frame 153 × 120 × 46.1 mm (W × H × D)
Cut-out panel section 141 × 108 mm
Degree of protection IP 65 (front)
Weight 0.5 kg
Working temperature 0°C … 50 °C
Digital inputs 16, two of which are (one-channel) counting inputs or 1 two-channel counting input
Input current at 24 V approx. 10 mA
Digital outputs 16
Switching voltage 24 VDC
Output current 0.5 A
Special software for the following applications:— Dosing
Control Unit
ASR 20
Power supply 24 VDC ± 25%
Display 5.4 QVGA (320 × 240 pixels)black / whiteLC-Display, with background lighting
Keyboard 8 soft keys and 32 function keys
Housing Control-panel housing
Front frame 205 × 220 mm (W × H)
Insertion depth 136 mm with connection plug
Cut-out panel section 191 × 202 mm
Degree of protection IP 65 (front)
Weight Approx. 1.95 kg
Working temperature 0°C … 50 °C
Digital inputs 10, four of which are (one-channel) counting inputs
Input current at 24 V approx. 4 mA
Digital outputs 9, one of which is a floating relay contact
Switching voltage 24 V ± 25%
Output current Maximum 0.4 A
Special software for the following applications:— Flow control— Dosing— Cylinder stroke measurement and monitoring— Display and monitoring of added amounts— Display and monitoring of differential amounts— Display and monitoring of mixing ratio— Display and control of mixing ratio
Electronics An extract from our customised software solutions in test bench, plant and mechanical enginee-ring
16 Flow Measurement — Product Portfolio
Delta-p test bench
Pump test bench
17Flow Measurement — Product Portfolio
Cylinder stoke measurement for workpiece positioning / workpiece clamping
The front panel informs about the status of the process and enables selective intervention in the process flow. Flow rate and mixing ratio indicator for one or more components + control output for one or more components + shot size measurements are feasible.
Pulsation test bench
Tool/mechanical engineering
PU application
18 Flow Measurement
Quality assuranceat KRACHT
Each flow meter is tested regarding signal characteristic,behaviour at starting point and measuring accuracy.
KRACHT GmbH, Werdohl
Acc DIN EN ISO 9001
Acc DIN EN ISO 14001
Acc ATEX-Richtlinie 94/9/EG
(ATEX 95)
KRACHT Hidraulik Kft, Budapest
Acc DIN EN ISO 9002
Machinery
The focus of new acquisitions is on the latest production machinery. We were able to significantly improve the age distribution of the plants.
The current average age is 2 years, which produces signi-ficantly faster processing and a higher finishing accuracy. With that, we are achieving significant quality increases in our products.
Distribution international
We are at your side, worldwide, with our decades of experience, for professional mastery of specific applications and complete solutions in hydraulics and processing technology. A comprehensive network of sales and service offices guarantees you and your project the right advice and optimal service. Take us at our word.
AustraliaAustriaBelgiumCanada
ChinaCzech RepublicDenmarkFinland
FranceGermanyHong KongHungary
ItalyJapanKoreaLuxembourg
NetherlandsNorway PhilippinesPoland
PortugalSlovakiaSloveniaSouth Africa
SpainSwedenSwitzerlandTurkey
United KingdomUSA
19Flow Measurement
Mr. Marcus Gluth
fon +49(0)2392.935 210
mail [email protected]
Mr. Markus Luczak
fon +49(0)2392.935 211
mail [email protected]
Generally Flow Measurement
fax +49(0)2392.935 327
mail [email protected]
Your contacts for the flow measurement product area
03
/11
GB
KRACHT GmbH · Gewerbestraße 20 · D-58791 Werdohl fon +49 (0) 2392.935 0 · fax +49 (0) 2392.935 - 209
mail [email protected] · web www.kracht.eu