Mobrey - Stránka P MIP

1 1 DescriptionUltrasonic liquid level switches arefor use in industrial process,nuclear and marine cargoapplications to detect high or lowliquid is achieved using thetime proven principle of ultrasonictransmission between two presence is detected byvirtue of its bulk, with liquiddroplets, condensation or foamingbeing Hi-sens sensors aredesigned for fail-safe high levelduty. Mobrey gap sensors aredesigned for fail-safe low electronics are availablestandard or self-checking, withoptions including lamps toindicate sensor status, time delaysand circuits to detect has been manufacturingand selling high quality ultrasoniclevel equipment for many years,and have built up considerableexpertise in the supply of non-catalogue equipment, customdesigning system if the standardproduct will not meet the exactapplication applicationsPetroleum processingFuels, lubricating oils, hydraulicfluids, liquid petroleumderivatives, crude oil, fuel - processingAcids, alkalis, ammonia, paints,lacquer, waxes, peroxides,alcohols, slurries, printing inks, processingBeverages, fruit juices, cookingoils, molasses, liquids withentrained and cosmeticLiquids, emulsions, lotions, operationFuel oil, hydraulic fluid, bilge levelalarms, sea water, coolant,condensate levels.

2 Cargo operationLevel control, alarm liquidsLiquid methane, nitrogen, oxygen, industryFlood control, reservoir levels,sludge blanket detection, sewagesump detection, overflow alarm,low level alarm in evaporationprocess measurement solutionsData sheetIP201 MobreyUltrasonic liquid level detectionsystemsFeatures No moving parts Simple installation Hazardous area approvals Ignores foams Unaffected by:RF InterferenceConductivityDropletsMost coatingsLiquid colour/opacity2 SYSTEM DESCRIPTIONA Mobrey ultrasonic liquid levelcontrol comprises: A tank mounted sensor containingtransmitter and receiver crystals An RF sensor drive and detectorelectronic circuit, which may beintegral with the sensor or mountedadjacent to the sensor dependingupon vessel conditions or accessconsiderations. A control unit mounted remotely tomonitor the sensor state and providethe required switching functionCHOICE OF SENSORMOBREY GAP SENSORSM obrey gap sensors energise a relayoutput when there is a liquid presentbetween the transmitter and receivercrystals of the sensor.

3 In this way,absense of liquid, power failure ordamage to plant cabling will result inan alarm sensors are fail-safe low applications Pump protection Vessel empty protection Foam/froth detection Pump controlMOBREY HI-SENS SENSORSM obrey Hi-sens sensors operate in areverse manner. The transmitter andreceiver crystals communicate aroundthe wall of the sensor when it is of liquid around the sensordamps out the 'ringing' of the sensorand an alarm condition is Hi-sens is therefore failsafehigh level and will signal an alarmcondition on presence of liquid,power failure or damage to applications High level alarm Overfill prevention Leak detectionUltrasonic sensor operation can beadversely affected by the presense ofexcessive aeration, solids or foam in theliquid. If you have an applicationquery contact Mobrey for expertadvice on the selection of a suitableliquid level detection systemSensors may be mounted in anyposition to signal liquid gap sensor: General purpose failsafe low levela) Sensor in airThe ultrasonic signal willnot reach receiver crystalb) Sensor in liquidThe ultrasonic signalreaches receiver crystalControl unitRelay output isenergised-NORMALSTATEC ontrol unitRelay output isde-energised-ALARMSTATES ignal is receivedTransmittercrystalReceivercrysta lNo signal is receivedMobrey hi-sens sensor (Models HL & HD).

4 Fail safe high levela) Sensor in airThe ultrasonic signalreaches receiver crystalb) Sensor in liquidThe ultrasonic signal is lost intothe liquid and does not reachreceiver crystalRelay output isenergised-NORMALSTATEC ontrol unitControl unitRelay output isde-energised-ALARM STATES ensor with adjacent amplifierSensor withheadamplifierControl roomelectronics3 CHOICE OF SYSTEM & CONTROL UNITSTANDARD INDUSTRIALI ndustrial control unitSafe area use onlyDescriptionDesigned and developed toprovide the ultimate fail safesystem. Electropulse electronicscan be used with most Mobreysensors. Head mounted or adjacentelectronics communicate withcontrol room electronics bysending pulses down simple twistedpair systems are specifiedin applications where level is ofcritical importance, such as marinetanker overfilling, chemical plantand nuclear may be set to operateeither when wet or dry and have afield adjustable sensitivitypotentiometer and status sensors are built to IS standardsfor use in safe or hazardous MCU200 control unit providessimple, economical controlelectronics for mounting on sitenear the tanks containing theappropriate ultrasonic sensor.

5 Thesensors provide liquid leveldetection and are available invarious materials and control unit has a sensitivitypotentiometer to adjust for sensorand liquid 200 offers in addition aselectable time delay, earthcontinuity checking between sensorand control unit, and LED's toindicate sensor state. MCU 200 hasa DPCO relay output and issuitable for use with all Mobreysensors. Wall mounting IP65polycarbonate enclosure Connection between sensor andcontrol unit is by up to 50m ofdual co-axial cable Failure of sensor or breakage ofco-axial cable earth loop will causean alarm condition and light thefault Electrosensor systemsprovide a cost effective method oflevel detection and control wherehigh system integrity coupled withlow cost installation is sensors are fitted withhead-mounted or adjacentelectronics which are thenconnected back to control roomelectronics using simple twisted pairwiringSensors may be set to operate eitherwhen wet or dry and have a fieldadjustable sensitivity potentiometerand status sensors are built to IS standardsand may be used in safe orhazardous areas.

6 Cabinet or DIN rail mountingcontrol unit Simple twisted pair cablebetween sensor and control unitup to 1000m Safe or hazardous area use Failure of sensor or cabling willcause an alarm condition and lightthe fault LED Additional fault relay activatedon fault conditionHIGH INTEGRITYE lectrosensorIntrinsically safeEExia IIC T4 FAILSAFEE lectropulse Cabinet, DIN rail, or rackmounting control unit Simple twisted pair cable betweensensor and control unit up to 1500m Safe or hazardous area use Any failure of the sensor,electronics or associated wiringcauses the system to give alarm andfault outputs Fitted with test switch to simulatealarm and fault conditionsIntrinsically safeEExia IIC T4 Select sensor: Fold out page 16 Technical data: Pages 4-7 Control electronics: Page 8 Select sensor: Fold out page 16 Technical data: Pages 4-7 Control electronics: Pages 9-11 Select sensor: Fold out page 16 Technical data: Pages 4-7 Control electronics: Pages 12-15 Select from the 3 systems below the one which meets your needs, then fold out page 16 and select a sensor to suit theliquid in the control boxSAFEHAZARDOUS2 wiretwisted pairMCU control boxSupplyRelayCo-axial cableGapsensorHi-senssensorCo-axial cableSupplyRelay2 wire twisted pairMEPcontrolboxSupplyRelayMEP rackcontrolSAFEHAZARDOUS2 wiretwisted pair4 ULTRASONIC POINT LEVEL SENSORS: DIMENSIONSWH shows approimate switching level with sensor horizontalWV shows approximate switching level with sensor verticalExtended length versions: Max A = 3000mm vertical, 915mm horizontal, where A is the measurement from themounting thread run-out to the nominal switching PURPOSES ensor type 332 SDGeneral purpose stainless steelSensor type 302 SDGeneral purpose stainless steelDesign or duty: StandardLiquid type.

7 Clean, minor aerationTemperature:-70oC to +150oCDesign or duty: StandardLiquid type:Clean onlyTemperature:-70oC to +150oCSensor type 312 S*High sensitivity plasticDesign or duty: PlasticLiquid type:AeratedTemp. PP:-70oC to +65oC PPS:-70oC to +130oCSensor type 312 SYHigh sensitivity epoxy resinDesign or duty: Aerated liquidsLiquid type:Clean, aeratedTemperature:-70oC to +130oCSensor type 323 SYWide gap epoxy resin & stainless steelDesign or duty: Dirty liquidsLiquid type:Clean, aerated,viscous with scale,with solidsTemperature:-70oC to +130oCSensor type 393 SDHigh sensitivity stainless steelDesign or duty: Dirty liquidsLiquid type:Clean, aerated,viscous with scale,with solidsTemperature:-70oC to +150oCSensor type HLGeneral purpose stainless steelDesign or duty: High levelLiquid type:Clean, aerated,with solidsTemperature:-70oC to +130oCMultipoint sensorsMaximum length 3000mmTypically used for two level pump control or combined high and low level alarms.

8 Mountingflanges optional to orderModel HD2 Point maximumModel 352S2 Point maximumModel 373S6 Point maximum1010A (59 min)WV 49 " BSPT3147 " BSPTWV 4931251013025WV20 25WH191" BSPT1135372510WV20WH191" BSPT3699WV17 TransducerepoxyWH " BSPT183351 Clearancedia min752866 For 393 SEspecify thisdimension 'A'WH " BSPT1313271040130108020WV 26WH161" BSPT12117102027WV 22 AWH13 " BSPT132422102024 WVWH13 " 286WH171" BSPT1010 OptionalflangeMin 27WV 22A (59min)203731 " BSPT13 WV31D C B AMin 35 Min37 Min71 Max455 Max3000B(159 min) 49WV5 HIGH TEMPERATURELOW TEMPERATURECHEMICAL DUTYMINIATURE SENSORACROSS PIPE SENSORHIGH PRESSUREINTERFACEFor non-penetration, interface & sludge sensors, see pages 6 & 7 Sensor type 362 SJEpoxy & stainless steelDesign or duty: Cryogenic smallLiquid type:Clean, aerated,with solidsTemperature:-210oC to +65oCSensor type 30 HSHigh temperature stainless steelDesign or duty: High type:Clean, aerated,with solidsTemperature:+1oC to +250oCMounts from outside vesselNote: temperature at point of cable exitfrom sensor must be less than 150oCSensor type 39 HSHigh temperature stainless steelDesign or duty: High type:Aerated, viscouswith solid scaleTemperature:+1oC to +250oCMounts from outside vesselNote: temperature at point of cable exitfrom sensor must be less than 150oCSensor type 389 STPTFE for chemical applicationsDesign or duty: PTFE bodyLiquid type:Clean, aeratedTemperature:-20oC to +130oCNote:Max.

9 Pressure 10 bar(Extended length models bar)Sensor type 366 SJMiniatureDesign or duty: Small spaceLiquid type:CleanTemperature:-210oC to +65oCSmall space model with low thermalcapacity bar max. pressureSensor type 442 SDAcross pipeDesign or duty: PipelinesLiquid type:Clean or may be usedfor sludge detectionTemperature:-70oC to +150oCSensor type 422 SDStainless steelDesign or duty: High pressureLiquid type:CleanTemperature:-70oC to +150oCSensor type 433 SDStainless steelDesign or duty: Sludge or interfaceLiquid type:Viscous or with solidsin suspensionTemperature:-70oC to +50oCSensor type 402 SDStainless steelDesign or duty: Chemical interfaceLiquid type:Clean, viscous withsolidsTemperature:-70oC to +150oC2212 threadBA/FWV 4WH61691020256326 22 " BSPTWH11WV25810202515226 22 " BSPTWH11WV2061102303011 WHStandard gap =150mmSpecify gap50 to 450mm " BSPT79252010 22 " BSPTWH11 Carbon or stainlesssteel flange 2"#150or NW50 ND10 This diametercorresponds toflange face1 " # 150 range 1279360 40 Stainless steelPTFE wetsidePTFE wetside 41 4813 40A = (92mm min)13wv401 " BSPT " BSPT1949WV6620335102010112WH 131964 " BSPT14WV69201019A " BSPTWH 131469 " BSPTC learance 851121228028WH1912WV26 ULTRASONIC POINT LEVEL SENSORS: DIMENSIONS6 SENSOR TECHNICAL DATAS tandard sensors30H39H312 SUSR312SY393(373)302(352)362(366)323 332389402 422 433 442 621601HL3(HD)Repeatability(mm)Max.

10 Pressure(d) (bar)Weight (gm)Standard frequency(MHz) DATA FOR ALLSENSORS Sensors are fitted with 3 meterscable and appropriate glands to fitcontrol box. Power consumption is less than 10milli-watts at sensor. Cable entry to sensor is IP65. MTBF of stainless sensors is foundto be x Temperature shock range - 70 Cto + 120 C if applicable. Mechanical shock - all transducerstested to withstand 20 Gminimum. Non operational temperaturelimit 175 C CABLE Standard is insulated dualcoaxial with PVC sheath. Minimum bend radius is 35mm. Radiation resistant cable, suitablefor 100 Mega rads, may besupplied to SENSORSMany of our customers haveparticular applications for which wecustom engineer and build your requirement for alevel control sensor, if you can notfind a suitable model in thiscatalogue, please do not hesitate tocontact Mobrey for LIQUID LEVEL SENSORSDESCRIPTIONTYPE 621 No contact with liquid No penetration of vessel For 18 to 75mm OD pipesThe 621S ultrasonic liquid levelsensor is mounted outside the sightglass or pipe to be monitored, at therequired switch position.