Flow Measurement Precision under any conditions

Transcription

1 Flow Measurement Precision under any conditions

2 2 Flow Measurement Content 3 5 KRACHT Flow Measurement 6 7 Accuracy Characteristics 8 13 Product Portfolio Electronics 18 Quality assurance 19 Distribution

3 KRACHT Flow Measurement Flow Measurement 3 Gear Type Flow Meter VC» You can only correctly produce that has been correctly measured in advance. «(A basic rule of measurement and control technology.) Development Flow Measurement - that means high-dynamic, precise volume and flow measurements, evaluated according to the application - from a simple display unit to an intelligent microcontroller solution. The basis for all this is the KRACHT volume counter. This flow measure product presents the successful result of our longexperienced engineers. 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 systems, or as flexible measuring and recording electronics for differentiated applications in test bench technology. 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.

4 4 Flow Measurement The current average age of the machines is approx. 2 years. Design The 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 collaboration (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 products 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 highlymodern machining centres. The coolant temperature constancy, 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 equipped 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 simultaneously 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 cylindrical 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 facilitate measuring all relevant gear teeth sizes. That leads to a considerable reduction in the setup times when setting up new machining jobs.

5 Flow Measurement 5 Based on a number of applications, meanwhile meters for various application areas with different media have been developed. 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 We would be glad to personally present you our references with leading manufacturers. Feel free to get in touch with us.

6 6 Flow Measurement Test Bench Accuracy Characteristics Accuracy Characteristics 1. Cross-Validation The flow meter device is measured against a DKD (Deutscher Kalibrierdienst = German Calibration Service) 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 documented 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 correspond to the target values, the flow meter will be reworked. cm³ Volume per pulse % V gz = % l/min Flow rate Q 3. DKD-Calibration on request

7 Flow Measurement 7 Flow Measurement - that means high-dynamic, precise volume and flow measurements, evaluated 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. Pressure drop Δp bar l/min VC 0.2 Flow rate Q

8 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 VC Gear Type Flow Meters VCA Gear Type Flow Meters VCN Measuring range (l/min) Working pressure (bar) Fluid temperature ( C) Housing material Spheroidal cast iron or stainless steel Aluminium Stainless steel

9 Flow Measurement Product Portfolio 9 Our expertise guarantees functional solutions. Standardised and application optimised. Gear Type Flow Meters VCG Gear Type Flow Meters VCL Screw-type Flow Meters SVC Turbine Flow Meters TM Spheroidal cast iron Stainless steel Spheroidal cast iron Stainless steel

10 10 Flow Measurement Product Portfolio Gear Type Flow Meters VC Gear Type Flow Meters VC VC VC 16 - Spheroidal cast iron VC VC 5 - Stainless steel Measuring range l/min Measuring ratio 1 : 300 Working pressure Viscosity 400 bar mm²/s Fluid temperature 30 C 220 C Gear Type Flow Meters VCA / VCN Measuring accuracy Electrical output Option Applications up to ± 0.3% deviation from measured value 2 incremental signals 90 out of phase ATEX type 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 Gear Type Flow Meters VCA / VCN VCA 0.04 / VCA 0.2 / VCA 2 / VCA 5 Aluminium VCN 0.04 / VCN 0.2 Stainless steel Measuring range l/min Measuring ratio 1 : 200 Working pressure Viscosity 200 bar mm²/s Fluid temperature C Measuring accuracy Electrical output up to ± 1 % deviation from measured value 1 incremental signal Option ATEX type (From size 2) Applications Lubrication oil control Measuring of fuel consumption Cylinder stroke measurement

11 Flow Measurement Product Portfolio 11 Gear Type Flow Meters VCG Spheroidal cast iron Gear Type Flow Meter VCG Measuring range Working pressure l/min 315 bar Measuring ratio 1 : 40 Viscosity mm²/s Fluid temperature 15 C 120 C Measuring accuracy Electrical output Applications up to ± 2.5 % deviation from measured value 2 incremental signals 90 out of phase Ratio measurement in dosing plants for 2- and multiple component media Gear Type Flow Meter VCL Gear Type Flow Meters VCL Stainless steel Measuring range l/min Measuring ratio 1 : 40 Working pressure Viscosity 400 bar mm²/s Fluid temperature 80 C Measuring accuracy Electrical output Applications up to ± 2 % deviation from measured value 2 incremental signals 90 out of phase Painting technology

12 12 Flow Measurement Product Portfolio Screw-Type Flow Meter SVC Screw-Type Flow Meters SVC Spheroidal cast iron Measuring range l/min Turbine Flow Meters TM Measuring ratio 1 : 150 Working pressure 250 bar Viscosity mm²/s Fluid temperature 30 C 150 C Measuring accuracy ± 0.2 % Option Applications ATEX type Measuring of fuel consumption Dosing plants Test bench construction Turbine Flow Meters TM TM TM 550 Stainless steel Measuring range l/min Measuring ratio 1 : 10 Working pressure 400 bar Fluid temperature C Measuring accuracy Electrical output Option Applications up to ± 0.4 % deviation from measured value 1 incremental signal ATEX type Flow measurement of water and cooling lubricants

13 Flow Measurement Product Portfolio 13 Valve Position Indicator Valve Position Measuring Instrument Valve Position Indicator with Encoder VOLUMEC VOLUTRONIC VOLUCODEC S 6 shut open O I O = Open II 30 Design Gear type volume counter Gear type volume counter Gear type volume counter max. flow rate max. working pressure 02: 4 l/min 04: 7 l/min 5: 150 l/min 02 / 04: 200 bar 5: 300 bar 0.25 up to 10 l/min 02: 4 l/min 04: 7 l/min 160 bar 02 / 04: 160 bar Display mechanical by downstream electronic possible LED Current-independent display Yes No Current-independent position detection Yes No Yes Leakage detection Yes by downstream electronic possible Reset function at slipping clutch by downstream electronic possible Calibration to actuator size by gear reducing by downstream electronic possible Yes Yes free programmable Flow direction must be defined A-B / B-A free programmable Error message No by downstream electronic possible Yes Hydraulic Manifolds Description HB HB 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

14 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 optionally attached to the display. The AS 8 microcontroller processes incremental input signals from the flow measuring devices. The input signals are filtered in the unit, converted, and computed into the physical sizes of flow rate or volumes. Plug-On Display SD 1 Local display for all KRACHT flow meters With plug connect ion according to DIN EN With 4-digit LED display for flow rat e or volume Display Unit AS 8 Control unit in control panel housing 5-digit LED display for flow rate or volume Power supply Display Touch panel Housing Front frame Degree of protection Weight Working temperature 18 VDC 28 VDC optional VDC Principle: 7-segment LED, 7.62 mm, red Display: with floating point Overflow: (>9999) display 9999 two buttons behind a screen Aluminium Height without plug approx. 35 mm Width approx. 60 mm Depth approx. 60 mm IP 65 (DIN 40050) Approx kg 0 C 60 C Power supply Display Touch panel Housing 230 VAC, + 6% 10% / Hz, optional 120 VAC, 24 VDC, 12 VDC Principle: 7-segment LED, 13.2 mm, red Display: with floating point Overflow (>9999): Display 9999 Overflow (< ): Display 9999 Status display: Illuminating diode K1 and K2 for relay 1 and 2 three keys behind the front panel, optional keys on front panel for switch panel plug-in unit made of plastic Front frame mm, DIN Insertion depth Cut-out panel section Degree of protection approx. 122 mm with plug board mm, tolerance x mm IP 54 in appropriate switch panel mounting Connections Right angle plug DIN (4-pole), polarized Output Option SD1-R incremental output SD1-I analogue output 0 20 ma or 4 20 ma SD1-K 2 relay contacts 24 VDC/1A SD1-Service with battery pack Weight approx. 0.4 kg Working temperature 0 C 60 C Connections Output 15 pins terminal connecting block ± 20 ma or 0 20 ma or 4 20 ma or Voltage output ± 10 V or 0 10 V or Serial interface RS 232 Supply 230 V, 50/60 Hz or 120 V, 50/60 Hz or 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

15 Flow Measurement Product Portfolio 15 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 and a controller unit. That means numerous fluid-engineering applications can be implemented. Standardised programs are available for various applications. Control Unit ASR 14 Control Unit ASR 20 Power supply 24 VDC Power supply 24 VDC ± 25% Display LC-Display, black / white, 4 20 characters, with background lighting Display 5.4 QVGA ( pixels) black / white LC-Display, with background lighting Keyboard 26 function keys (10 with LED) Keyboard 8 soft keys and 32 function keys Housing Control-panel housing Housing Control-panel housing Front frame mm (W H D) Front frame mm (W H) Cut-out panel section mm Insertion depth 136 mm with connection plug Degree of protection IP 65 (front) Cut-out panel section mm Weight 0.5 kg Degree of protection IP 65 (front) Working temperature 0 C 50 C Weight Approx kg Digital inputs Input current Digital outputs 16 Switching voltage Output current 16, two of which are (one-channel) counting inputs or 1 two-channel counting input at 24 V approx. 10 ma 24 VDC 0.5 A Special software for the following applications: Dosing Working temperature 0 C 50 C Digital inputs Input current Digital outputs 10, four of which are (one-channel) counting inputs at 24 V approx. 4 ma Switching voltage 24 V ± 25% Output current 9, one of which is a floating relay contact 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

16 16 Flow Measurement Product Portfolio Electronics An extract from our customised software solutions in test bench, plant and mechanical engineering Pump test bench Delta-p test bench

17 Flow Measurement Product Portfolio 17 Tool/mechanical engineering Cylinder stoke measurement for workpiece positioning / workpiece clamping Pulsation test bench PU application 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.

18 18 Flow Measurement Quality assurance at KRACHT KRACHT GmbH, Werdohl Acc DIN EN ISO 9001 Acc DIN EN ISO Acc ATEX-Richtlinie 94/9/EG (ATEX 95) Each flow meter is tested regarding signal characteristic, behaviour at starting point and measuring accuracy. 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 significantly faster processing and a higher finishing accuracy. With that, we are achieving significant quality increases in our products.

19 Flow Measurement 19 Distribution international Australia Austria Belgium Canada China Czech Republic Denmark Finland France Germany Hong Kong Hungary Italy Japan Korea Luxembourg Netherlands Norway Philippines Poland Portugal Slovakia Slovenia South Africa Spain Sweden Switzerland Turkey United Kingdom USA 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. Your contacts for the flow measurement product area Mr. Marcus Gluth fon +49(0) mail gluth@kracht.eu Mr. Markus Luczak fon +49(0) mail luczak@kracht.eu Generally Flow Measurement fax +49(0) mail durchflussmesstechnik@kracht.eu

20 KRACHT GmbH Gewerbestraße 20 D Werdohl fon +49 (0) fax +49 (0) mail info@kracht.eu web 03/11 GB