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 gluth@kracht.eu

Mr. Markus Luczak

fon +49(0)2392.935 211

mail luczak@kracht.eu

Generally Flow Measurement

fax +49(0)2392.935 327

mail durchflussmesstechnik@kracht.eu

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 info@kracht.eu · web www.kracht.eu