Mobrey Squing - Stránka P MIP

1 Special featuresSquing has a status indicatingLED which can be seen at alltimes through a lens in the endcover. The LED will flashapproximately once per secondwhen Squing is "off" and will beconstantly lit when Squing is "on".The LED gives an indication thatSquing is functioning correctlyand of course gives a visualindication of the state of 'mode' switch on the circuitboard is provided for the user toselect either Squing on when dry -the normal condition - or on whenwet, as would be selected for lowlevel level dutyThe fact that Squing is vibratingnormally when dry makes it idealfor use in high level change in frequency, howevercaused, will turn Squing off andan alarm may be activated.

2 Whenincluded in a fail-safe circuit, Squing provides an extra degree offail safety improving is approved by both PTBand DIBT for overfilling preventionduties. Universal level switch High level alarm duty Overfilling prevention Intrinsically safe models Marine approved modelsFeatures Small & compact No moving parts Resistant to plant vibration Operates in most liquids Large range of mounting options Hastelloy C and ECTFE coatedmodels Hygienic fittingsprocess measurement solutionsData sheetIP202 Mobrey Squingvibrating fork liquid level switchOperationThe Mobrey Squing is a two wiredevice and may be installed in anyposition in a pipe or vessel todetect the presence of a has a tuning fork stylewetside

3 Which vibrates at itsnatural frequency when in air. Apiezoelectric crystal system isused to create the oscillations andto monitor the actual frequency ofoscillation. When the fork iscovered by a liquid, this frequencychanges and is detected by theelectronics which change theoutput state of two core cable is used toconnect Squing in series with theload. The solid state output stageacts as a simple SPST switch,operated by liquid may also be interfaceddirectly to a PLC using the PNPtransistor output Squing interfaces directly toproprietary NAMUR isolationamplifiers, resulting in the lowestcost IS system on the models with CENELEC approval can be installed ina hazardous models conform to the DIN 19234 (NAMUR)switching levels, drawing < on the two wire loopwhen 'off' and > when 'on'.

4 An interface unit,mounted in the safe area, powers and monitors the loopand provides relay or solid state outputs for devices are proprietary items and are available fullycertified EExia IIC from Mobrey or from local devices often include a 'fault detection' circuit,which is activated when Squing draws a current outside theacceptable window, such as on open or short circuitconditions in the an extra safety feature, Squing contains circuitry todetect an abnormal rise in operating frequency, such aswould be caused by wetside installed as a high level or overfilling alarm in vesselscontaining corrosive liquids or vapours, this feature causesthe Squing to switch to the alarm state, indicating awetside corrosion : intrinsically safe models for hazardous area useSuitable isolating amplifiersMTL: 2213, 5011, 5012, 5014, 5016 ABB: GHG SeriesSTAHL: 9250 & 9251 SeriesP&F: KHD2 & KHA5/6 SeriesIf in doubt, contact Mobrey or isolation amplifiermanufacturer for full optionsDirect load switchingSimply wire the load in seriesMax.

5 Switched load:500mA continuousMax. peak load:5A for 40ms maximumMin switched continuousCurrent drawn (load off):< continuousApproximate voltage @ 24V dc / @ 240V acOperating voltage:24 to 240V (+/-10%) dc or ac+VPLC switching (PNP output)Relay outputOperating voltage:24V dc +/-20%+VModule code 0 Module code 2 Supply voltage from PLC:24 VdcSignal to PLC:24V dc ON / 0V dc OFFM odule code 1 Always earth Squing using this terminalNCNOC ontact rating:5A at 30V dc resistive2A at 30V dc L/R= 7msMax. relay voltage:30V dcAlways earth Squing using this SquingHAZARDOUS AREASAFE AREAA mplifierCertified isolating amplifierDIN19234 / NAMURSafe supplyto SquingE0 VLoad0 SigPLC24V dcEC0 VThreaded mountingOptions:For use with corrosive liquids which do not form condensing vapours, Squing is available with just the forksand short length of the extension tube - 100mm in all - coated with :For use with extended length Squing (1" models only), an adjustable clamp gland is available.

6 This isthreaded1 " BSPP for connection to the vessel, and allows the extended length Squing to be raised or lowered thenclamped in position. Note: this limits max. operating pressure to (SK304)* Nominal switching point, vertically mountedFlange mountingOptions:For use with corrosive liquids having condensing vapours, flanged Squing can be supplied with the wetsidefully Halar coated. maximum extended length E = 500mm. For liquids which do not form corrosivecondensing vapours, Squing is available with jsut the forks and a short length of the extension tube -100mm in all - coated with FittingOptions:Hand polished wetside to a finish of m or better available to orderAccessories:For use with 2"/51mm Tri-clover Squing , a mounting kit comprising vessel fitting, Viton seal and damp ringis available (SK266)For use with 'O' ring seal Squing , a fitting boss with Viton 'O' ring is available (SK267)Standard threads ", 1" BSPT, BSPP, NPTMax.

7 Op. (-40 to +50oC)45b (at 130oC)Max. op. temp.+130oC wetside(150oC CIP for 30 mins)Min. op. wetside/drysideMax. amb. temp.+50oC (at 130 C wetside)Standard flangesANSI, DIN, Mobrey (see ordering codes overleaf)Max. op. (-40 to +50oC)45b (at 130oC) or flange rating,whichever is the op. temp.+130oC wetside(150oC CIP for 30 mins)Min. op. wetside/drysideMax. amb. temp.+50oC (at 130 C wetside)Standard fittingsTri-CloverSMSDIN 11581'O' Ring sealMax. op. barMax. op. temp.+130oC wetside(150oC CIP for 30 mins)Min. op. wetside/drysideMax. amb. temp.+50oC (at 130 C wetside)MOUNTING OPTIONS* Nominal switching point, verticallymountedNotes:Max.

8 Length E = 3000mm. Extended models with 1"thread only. State dim. E & A when length E = A + 13mmNotes:Max. length E = 3000mm. State dim. E & A whenordering. Overall length E = A + 13mmNotes:Max. length E = 3000mm. State dim. E & A whenordering. Overall length E = A + 13mm* Nominal switching point, vertically mounted23mm13mm*23mm96mmCable glandsupplied56mmovergland172mm glandsupplied 81mm56mmovergland 32mm64mm hex13mm*1" BSPT23mmTri-clover hex13mm*82mmCable gland supplied56mmover gland 28mmCustomerdefinedlength A'O' ring seal Squing hex20mm207mmCableglandsupplied 81mm56mmoverglandCustomerdefinedlength A13mm*23mmStd length102mmCable glandsupplied 81mm56mm over gland13mm*23mm105mm 28mm112mmCableglandsupplied hex56mm over glandCustomerdefinedlength A13mm*1" threadonly160mmCableglandsupplied hex56mmover gland13mm* " or 1"thread23mm63

9 7DN508DN809DN100 AMobrey A FlangeGMobrey G Flange Ordering informationCodeProduct7 Squing Code SizeCode Size0 14 2DN6531 & 'O' ring seal or 38mm52 or 51mmCodeFitting Code0 BSPT4 BSPP Outside fitting5 NPT Outside fitting7 Tri-Clover clamp9 SMS hygienic fittingBFlange # 150 RFCF lange PN10/16 RFDDIN 11581 hygienic fittingCode MaterialTD316 St. SteelTCHastelloy CTX316 St. Steel, Halar coated (500mm max. on extended length models)TYFirst 100mm from tip Halar coatedCode EnclosureSYellow Squing housingGYellow GL approved housingCode Use0 Safe area use onlyCCENELEC useFDfBt Overfilling usePPtB Zone 0 Overfilling useCode Output0 Direct load switching (24-240V ac/dc)1 PNP Transistor output 24v dc2 Relay contacts 24v dc onlyCode Finish0 Electropolish or glass bead on flanged/extended length modelsPPolish to um (500mm max.)

10 Onextended length models)Code Material Certs :0 Typical (on request only) Length :E** Extended length. (3000mm max.) 1" & flange onlyL Fixed length. A = 83mmM** Modified standard productX** Special 3 0TD S 0 0 0 0 E2000 Typical part numberEFlangePN25 RFF'O' ring seal Hygienic fittingGFlange#300 RFJF langePN40 RFKF lange#600 RFLF langePN100 RFMM obrey flange(use with codes A & G above)ConstructionWetsideWetside surface finishDryside materialProtection classCable entryOperationalSwitching pointTime delay / response (water)Switching hysteresisViscositySpecific gravityStainless steel 316 Hastelloy 'C'Electro polished or Glass beadshotblast on extended length filled nylonIP66 / IP67M16 cable gland ( 0 cable max)Pg11 cable gland on marine approved modelsNominally 13mm from fork tip1 S wet to dry / dry to wet (nominal)4mm vertical, 1mm horizontal5000cs max (at 25 C)(may