Gear Type Flow Meter VC

Transcription

1 Gear Type Flow eter VC

2 Construction and Function Construction 1 Housing Cover 3 Gear reamplifier 5 Connector Sensor 7 Bearing assembly Function The measuring gears are driven by the liquid flow on the principle of a gear motor. The gears run without contact in the measuring chamber. The bearing elements are low-friction ball or plain bearings. The movement of the gears is sampled without contact by means of two sensors located in the cover. Between sensor compartment and measuring chamber is located a pressure-resistant, non-magnetic separator plate. When the measuring mechanism rotates by one tooth pitch, the sensor emits a signal which corresponds to the geometrical tooth volume V gz. The signal is converted into a square-wave signal by the preamplifier. The two-channel sampling permits better resolution as well as recognition of the flow direction. RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 3

3 roduct Characteristics Optimized for individual applications because the series have been rendered media-specific by means of differing clearances, bearing variants and materials. Wide measuring ranges with sizes graduated to meet specific requirements. easurement independent of viscosity within the specified ranges. ow pressure drop High-response measurement High working pressure ow noise emission High-precision measurement with outstanding reproducibility Temperature-independent output signals over a wide temperature range High degree of accuracy, even with low flow rates at the bottom end of the measuring range High working reliability of the electronics Easy to use terminal of the preamplifier Working indication of the electronic Sensor system and preamplifier in EC-compatible design Explosion-proof version available for all volume counters Typical Applications Application edium Version Series Flow rate measurement oil, brake fluid, skydrol, diesel Spheroidal cast iron (hydraulic test stand) lubricating ball bearings low viscosity minimal clearances 1 Oil metering gear oil Spheroidal cast iron (metering plant) lubricating ball bearings medium viscosity increased clearances Consumption measurement offset ink Spheroidal cast iron (rinting press) lubricating bronze plain bearings high viscosity large clearances 3 Ratio control polyol + isocyanate, adhesives, resin, silicon Spheroidal cast iron ( component plant) low lubricity carbide plain bearings medium viscosity increased clearances Batching control clear lacquer, cavity waxes stainless steel (lacquering plant) low lubricity carbide plain bearings medium viscosity increased clearances 5 Flow rate measurement solvent stainless steel (lacquering plant) lubricating ball bearings low viscosity minimal clearances For fluids with a low viscosity and poor lubricity a hybrid ball bearing (with ceramic balls) is a available for sizes VC.5, VC., VC. and VC 1. Flow meters with hydrid ball bearing are available in Spheroidal cast iron (series 7) and stainless steel (series ). RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

4 Accuracy Characteristics The accuracy figures quoted by RACHT refer to the geometric tooth volume V gz, that is to say the percentage deviation applies to the current value in each case. The linearity error over the entire measuring range is < ±.1 % Reproducibility of a measured value is <.1 % Accuracy checking forms part of quality inspection in every case. On request the result of the test will be documented in the form of an accuracy characteristic curve; an example relating to a series 1 VC 1 is given below. The accuracy values quoted by racht are confirmed by the DD (German Calibration Service). Accuracy 1.5 cm Volume per pulse % V gz = % inearity 1.5 cm Volume per pulse % V gz = % RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 5

5 General Characteristics Design Connection type ounting position Flow direction Viscosity ax. pressure drop gear motor plate mounting/pipe connection optional optional mm /s, (according to series) Δp max = 1 Working Characteristics Nominal geom. max. working pressure eak pressure Sound pressure Resolution size toothvolume Standard- High pressure Standard- High pressure level version version version version (/79) (/79) V gz p max p max p^ p^ A Imp/l cm 3 db (A).5.5 <... < <...5 < < < < < < <.5 RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

6 ermitted Temperature Ranges Sealing materials Series F ED FE FF Ambient temperature --15 C + C --3 C + C --3 C + C --15 C + C edium temperature 1,,, 7, --15 C + 1 C --3 C + 1 C --3 C + 1 C --15 C + 1 C for standard version 3,, C + C --3 C + C --3 C + C --15 C + C edium temperature 1,,, 7, --15 C + 15 C --3 C + 13 C --3 C + 15 C --15 C + 15 C for high temperature version 3,, 5 on request on request on request on request for high temperature US version 1,,, 7, --15 C + 15 C --3 C + C* --15 C + C* edium temperatur 1,,,7, --15 C + C --3 C + C --3 C + C --15 C + C for -version 3,, C + C --3 C + C --3 C + C --15 C + C for -version high temperature US * for sizes VC.5...VC.1 max. 1 C 1,,, 7, --3 C + C Series Selection / Summary of Variants Series aterial housing Spheroidal Spheroidal Spheroidal Spheroidal stainless stainless Spheroidal stainless cast iron cast iron cast iron cast iron steel steel cast iron steel EN-GJS--15 EN-GJS--15 EN-GJS--15 EN-GJS EN-GJS (/79 EN-GJS--3) aterial gears steel steel steel steel stainless steel stainless steel steel stainless steel Bearing ball bearings ball bearings bronze- carbide carbide stainless steel hybrid hybrid plain bearings plain bearings plain bearings ball bearings plain bearings ball bearigs Connection /R /R /R ax. perm. foreign particle size in the medium (μm) Accuracy ±.3 % ±.5 % ± 1 % ±.5 % ±.5 % ±.3 % ± 1 % ± 1 % (from measuring value) at mm /s at 5 mm /s at mm /s at mm /s at mm /s at mm /s at mm /s at mm /s Nominal Starting size point at easuring range [] [] * , * easuring accuracy ± 3 %; inearity ± 1.5 % RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 7

7 Type ey Ordering example VC. F 1 S /.. means: Nominal size. / Seal F / Series 1 / late mounting / Electronic standard Special ID No. Connection type late mounting R ipe connection Series see series selection Electronics S standard (--3 C + 1 C) H high temperature (--3 C + 15 C) high temperature US (--3 C + C) V without preamplifier (for plug-in display SD1) X intrinsically safe (ATEX) (switching amplifier has to be ordered separately) X high temperature US ATEX (-- 3 C + C) (switching amplifier has to be ordered separately) roduct name Seal F F E ED FE FF Nominal size Special Versions Special ID Series Description 55 1 version with aluminium connection box, preamplifier VV1 and Cannon plug 71 1 version with Hirschmann connector and round connector 1 x1 7 1 version with Hirschmann connector and preamplifier VV1 for 1 Volt power supply (.5 1 Volt) 79 1 VC 3 and VC 5 in high pressure version ( ) VC 3 and VC 5 in high pressure version ( ) Skydrol resistant, and aluminium connection box with Cannon plug Skydrol resistant, and aluminium connection box with Cannon plug. RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

8 Electrical Connection Standard version / High temperature version Volt (brown) Signal output channel Channel 1 (green) High temperature US version Electrical connection (Round connector 1 x 1/-pin) () Channel 1 (black) (1) V (brown) Signal output channel Channel (yellow) (3) V (blue) () Channel (white) Volt (white) Electrical Characteristics Number of measuring channels Working voltage U op = VDC polarized ulse amplitude U A. U B ulse shape with symm. output signal Signal output square wave pulse duty factor/channel 1:1 ±15% N (NN on request) ulse offset between two channels 9 ± 3 ower requirement b max =.9 W Output power/channel a max =.3 W short-circuit-proof Degree of protection I 5 DIN 5 Signal Characteristics Channel I B A rising edge C F B one pulse (corr. to flow rate of geom. tooth volume V gz) D C falling edge D ON phase E OFF phase F pulse duty factor 1:1 ± 15 % A I E ±15 U A Channel II G channel offset H flow direction 1 reversal of flow direction J flow direction G II 9 ±3 H J U A RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 9

9 Explosion-roof Design (ATEX) Function All volume counters are available in explosion-proof design according to ATEX. The explosion-proof design consists of the volume counter (intrinsically safe electrical apparatus) and the switching amplifier 13 (associated electrical apparatus). The type of protection intrinsic safety applies to this construction. The volume counter is installed in the potentially explosive atmosphere. The mounting of the amplifier 13 is carried out in the safe area. Volume counter and switching amplifier are electrically connected to each other. The switching am plifier evaluates the sensor signals and converts them to square-wave signals. Without switching amplifier, the volume counter must not be operated in the potentially explosive atmosphere. Cable lengths of up to m are possible between volume counter and switching amplifier. ED s for monitoring line breaks / short circuits, channel switching state and power supply are located on the switching amplifier. Safe area otentially explosive atmosphere brown white Channel 1 Channel 13 shield brown white VC Volt Volt 7, and 9 jumpered green yellow A green yellow II () G [EEx ia] IIC TB 3 ATEX 9 X II GD EEx ia IICT TB 3 ATEX 9 Note: This graph is an example only. National laws for potentially explosive areas must be considered. Technical Data of Switching Amplifier -13/3-E- ower supply Supply voltage cl. 7 (+), cl. (--) DC Volt ± % Ripple content white Wss < % Outputs (non-intrinsically safe) Characteristics cl. 9, 1,, 11 Electronics outputs Short-circuit current Signal level 1-signal Signal level -signal Ambience conditions inimum limiting temperature aximum limiting temperature electrically isolated via optoelectronic coupler approx. 5 ma. x supply voltage with R > k ohm inhibited output, residual current < ua ( - 5 C) 333 (+ C) echanics Dimensions 7.5 x 9 x mm Connection possibility can be snapped on a 35 mm mounting channel DIN 77 Weight approx. 15 g RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

10 ressure Drop Series 1,,, 7 and arameter: Viscosity (mm /s) VC VC VC.5 (extract) VC. (extract) VC VC. RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 11

11 ressure Drop Series 1,,, 7 and arameter: Viscosity (mm /s) VC VC VC VC VC VC RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

12 ressure Drop Serie 3 arameter: Viscosity (mm /s) VC VC 5 RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 13

13 ressure Drop Series /5 arameter: Viscosity (mm /s) VC VC VC. 3 5 VC VC VC 5 RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

14 Dimensions Series 1,, 3,, 7 Connection type Nominal Available Weight Tightening Dimensions size series torque kg Nm mm m A A C D F GS GH J N VC.5 1, VC. 1, VC VC. 1,,, VC. 1, VC 1 1,, 3,, VC 3 1,, VC 5 1,, 3, J 3 F G S G H O-Ring C N Version S and Version X Tightening torque A Version H Connection dimensions D A N RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 15

15 Dimensions Series 1 High pressure version (/79) Nominal Weight Tightening Dimensions size torque kg Nm mm Series 1 Standard version m A C D F GS GH J N VC VC Nominal Weight Tightening Dimensions size torque kg Nm mm m A C D F GS GH J N VC VC J 3 C G H N F G S N ø D 1 RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

16 Dimensions Connection plate (Spheroidal cast iron) for VC 3/79 and VC 5/79 (high pressure) with side SAE flange connection Ordering Weight Dimensions code kg mm m A B C E F G N R a b e f VC 5 V1 E9* /15 t / t / t * fits for VC 3 and VC 5 Connection plate for VC 1 and VC 1 with side SAE flange connection Ordering Weight Dimensions code kg mm m A B C E F G N R a b e f VC 1 V1 G9** / t /5 t /5 t ** fits for VC 1 and VC 1 ø A E f G C b B F R e a ø A X X N RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 17

17 Dimensions Series 5, and (stainless steel) Connection type Nominal Available Weight Tightening Dimensions size series torque kg Nm mm m A C D F GS GH J N VC.5 5,, VC., VC.1, VC. 5,, VC , VC 1 5,, VC 3 5, VC 5 5, J G S G H F O-Ring Ø D C Ø N Version S and Version X Tightening torque A Version H Connection dimensions Ø N 1 RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

18 Dimensions Series 5, and (stainless steel) Connection type R Nominal Available Weight Dimensions size series kg mm m A B C D E F GS GH H J VC.5 5,, 3. G VC., 3. G VC.1, 3. G VC. 5,, 3.1 G VC. 5. G VC 1 5,, 7 G VC 3 5, 15.9 G VC 5 5, 1.7 G J Ø C A E B H F G S G H Ø Ø D Version S and Version X Version H RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 19

19 Dimensions VC High Temperature US Nominal Weight Tightening Dimensions size torque kg Nm mm m A A C D F G J N VC VC VC VC VC VC VC VC D High temperature US area Normal area 5 engths ordering designations 5 J 1, Tightenning torque 3 F G 3 O-Ring C A View X Ø,3 Connection dimensions N RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

20 Dimensions VC High Temperature US Nominal Weight Tightening Dimensions size torque kg Nm mm m A C D F G J N VC 3 / VC 5 / VC VC High temperature US area 5 engths ordering designations J Normal area 5 1, Tightenning torque 3 Ø,3 N 3 F C G Connection dimensions View X ø D N RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 1

21 Connection plates (cast iron) with side threaded connection Ordering Weight Dimensions code kg mm m A B C E F G H J N R c d e f VC. R 3 B 5* /t G 3 13 VC. R 3 C 5* /t G 1 15 VC. R 1 C / 1 t G 1 15 VC. R 1 D /1t G 3 17 VC 1 R C / 1 t G 1 15 VC 1 R 3 D /1t G 3 17 VC 1 R E / 1 t G1 19 VC 5 R E 5** /t 1 G1 19 VC 5 R G 9** /t 1 5 G1 1 3 ** fits for VC.5, VC., VC.1 and VC. ** fits for VC 3 and VC 5 A E øh B F R C J øg View X f D R C N e d c øg X Ansicht X Connection plates (cast iron) with side SAE flange connection Ordering Weight Dimensions code kg mm m A B C E F G H J N R a b e f VC 5VE 5** / t / t VC 5V1F / t / 5 t ** fits for VC 3 and VC 5 A E øh f C b B F J R N øg e a View Ansicht X x RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

22 Connection plates (cast iron) with rear threaded connection Ordering Weight Dimensions code kg mm m A B C E F G H J N R c d e f VC. R 3 B * /t.7 5 G 3 13 VC. R 1 C / 1 t.7 9 G 1 15 VC. R 1 D / 1 t G 3 17 VC 1 R C / 1 t G 1 15 VC 5 R E ** / t 55 1 G 1 19 ** fits for VC.5, VC., VC.1 and VC. ** fits for VC 3 and VC 5 A C E J G N B øg c f d øh e R F Connection plates (cast iron) with rear SAE flange connection Ordering Weight Dimensions code kg mm m A B C E F G H J N R a b e f VC 5 V E ** / t / t ** fits for VC 3 and VC 5 A C E J f b B R F øh øg N e a RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 3

23 Connection plates (Stainless steel) with side threaded connection Ordering Gewicht Dimensions code kg mm m B D C E G H J N R e f VC. R B11* / t 1 G 3 13 VC 1 R3 C /1 t 19.5 G 1 15 VC 1 R D /1 t 1 G 3 17 VC 5 R E11** / t 5 G1 19 VC 5 R G11** / t 3 G1 1 3 ** fits for VC.5, VC., VC.1 and VC. ** fits for VC 3 and VC 5 ø D E C J ø H B ø G e f N R RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

24 Note RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 5

25 Note RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web

26 Note RACHT GmbH Gewerbestr Werdohl, Germany fon +9()3 9/935- fax +9()3 9/935 9 mail info@kracht.eu web 7

27 roduct ortfolio Transfer umps Transfer pumps for lubricating oil supply equipment, low pressure filling and feed systems, dosing and mixing systems. obile Hydraulics Single and multistage high pressure gear pumps, hydraulic motors and valves for construction machinery, vehicle-mounted machines. Flow easurement Gear and turbine flow meters and electronics for volume and flow metering techno logy in hydraulics, processing and laquering technology. Industrial Hydraulics / Test Bench Construction Cetop directional control and proportional valves, hydraulic cylinders, pressure, quantity and stop valves for pipe and slab construction, hydraulic accessories for industrial hydraulics (mobile and stationary use). Technology Test benches / Fluid Test benches. VC/GB/1.1 RACHT GmbH Gewerbestraße 5791 Werdohl, Germany fon +9 () 3 9 / 935- fax +9 () 3 9 / mail info@kracht.eu web