VEGAPULS WL 61 - 4 â¦ 20 mA/HART - two-wire

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4 MountingFlow measurement withKhafagi Venturi flumed90°3 ... 4 x h maxh max21BFig. 22: Flow measurement with Khafagi-Venturi flume: d = Min. distance to sensor;h max.= max. filling of the flume; B = tightest constriction in the flume1 Position sensor2 Venturi flumeIn general, the following points must be observed:Installation of the sensor at the inlet side• Installation in the centre of the flume and vertical to the liquidsurfaceDistance to the Venturi flume• Min. distance of the sensor to max. storage level22VEGAPULS WL 61 • 4 … 20 mA/HART - two-wire38061-EN-121011
5 Connecting to power supply5 Connecting to power supplySafety instructionsVoltage supplyConnection cable5.1 Preparing the connectionAlways keep in mind the following safety instructions:•Connect only in the complete absence of line voltageIf overvoltage surges are expected, overvoltage arresters shouldbe installedPower supply and current signal are carried on the same two-wirecable. The voltage supply range can differ depending on the instrumentversion.The data for power supply are specified in chapter "Technical data".Provide a reliable separation between the supply circuit and themains circuits according to DIN VDE 0106 part 101.Keep in mind the following additional factors that influence the operatingvoltage:• Output voltage of the power supply unit can be lower under nominalload (with a sensor current of 20.5 mA or 22 mA in case of faultmessage)•Influence of additional instruments in the circuit (see load values inchapter "Technical data")The instrument is connected with standard two-wire cable withoutscreen. If electromagnetic interference is expected which is above thetest values of EN 61326-1 for industrial areas, screened cable shouldbe used.For instruments with housing and cable gland, use cable with roundcross-section. A cable outer diameter of 5 … 9 mm (0.2 … 0.35 in)ensures the seal effect of the cable gland. If you are using cable witha different diameter, exchange the seal or use a suitable cable gland.We generally recommend the use of screened cable for HART multidropmode.5.2 Wiring planWire assignment, connectioncable1238061-EN-121011VEGAPULS WL 61 • 4 … 20 mA/HART - two-wireFig. 23: Wire assignment fix-connected connection cable1 brown (+) and blue (-) to power supply or to the processing system2 Shielding5.3 Switch-on phaseAfter connecting the instrument to power supply or after a voltagerecurrence, the instrument carries out a self-check for approx. 30 s:23
Page 1 and 2: Operating InstructionsRadar sensor
Page 3 and 4: Quick start0,5 m(19.68")100%25 m(19
Page 5 and 6: Contents10 Dismounting10.1 Dismount
Page 7 and 8: 2 For your safety2 For your safety2
Page 9 and 10: 2 For your safetytection. The envir
Page 11 and 12: 3 Product descriptionScope of deliv
Page 13 and 14: 4 Mounting4 MountingSuitability for
Page 15 and 16: 4 Mounting> 200 mm(7.87")Fig. 8: Ve
Page 17 and 18: 4 MountingFig. 12: Rotation in the
Page 19 and 20: 4 MountingFig. 16: Mounting of the
Page 21: 4 MountingFoam generationFlow measu
Page 25 and 26: 6 Set up with VEGADIS 626 Set up wi
Page 27 and 28: 6 Set up with VEGADIS 62Information
Page 29 and 30: TWISTUSB7 Setup with PACTwareVia in
Page 31 and 32: 7 Setup with PACTwareIf these value
Page 33 and 34: 9 Diagnosis, Asset Management and s
Page 43 and 44: 10 Dismounting10 Dismounting10.1 Di
Page 45 and 46: 11 Supplement3142Fig. 44: Data of t
Page 47 and 48: 11 SupplementTracking speed of the
Page 49 and 50: 11.2 Radio astronomy stations11 Sup
Page 51 and 52: 11 SupplementVEGAPULS WL 61, versio
Page 53 and 54: 11 SupplementVEGAPULS WL 61, versio
Page 55 and 56: 11 Supplement11.4 Industrial proper
Page 57 and 58: Notes38061-EN-121011VEGAPULS WL 61
Page 59 and 60: Notes38061-EN-121011VEGAPULS WL 61

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VEGAPULS WL 61 - 4 â¦ 20 mA/HART - two-wire