Meter Relays - Crompton Instruments

1 Web: Email: RelaysFeaturesMonitors and controls anyvariable which can beconverted to an , shock andvibration resistant designIndicator, Relays andpower unit in one housingStable electronicswitching circuit does notuse lamps, photocells,inductors or capacitorsTaut band, fluid dampedindicatorIsolated input signalLED relay state indicatorsBuilt-in 0 - 10 secondadjustable time delaysUL ApprovedFile No. E75911 SPMeter RelaysProduct CodeOne relay, two setpointsUpscale de-energized, down scale applications: Liquid level control, load shedding andpower factor relay, one set pointUpscale energized, downscale application: High Relays , two set points Mid band de-energized, outside band applications: High and Low alarm, High alarm plus shut Relays , two setpointsBoth upscale energized, downscale application: High alarm plus shutdown.

2 077-303 Two Relays , two setpointsHigh and low midband energized, outside band de-energized. No time application: High alarm plus Relays , two set pointsBoth upscale de-energized,downscale application: Frequency relay, one set pointUpscale de-energized, downscale application: Low Relays , two set pointsMidband de-energized, outside band from from 2, 3 or 4 wire resistance temperature detector (RTD).Typical application: Temperature indication / Relays , two set pointsMidband de-energized, outside band energized. Operates from thermocouple junction compensation and thermocouple break protection are standard application: Temperature indication / 077 Meter Relays combine a highlyaccurate indicator with High and Low setpoint relay.

3 The Relays can operate alarmand control devices when the monitoredsignal value moves outside the chosenset point limits shown by adjustable redindex single compact case houses the unitwhich requires only the input signal andpower supply thus saving space andinstallation Relays077 Series Analogue Meter RelaysApplicationsVoltage monitoring/control current monitoringOverload alarmBattery monitoring/chargingTemperature indicationTemperature controlLoad sheddingPower factor correctionFrequency monitoringLevel controlWeb: Email: RelaysMeter Relays077 Series Analogue Meter RelaysInput signal ratings:Frequency monitoring: 45/65Hz or 55/65Hz100/125 V, 200/250V380/440V or 480V Voltage:10mV to 500V - 10k Current:10 A to 500mA - 20mV drop4 Voltage:6V to 600V - 1000 Current:100 A to 1A - 1V drop5A CT operation - :Standard outputsRTD Operation:10 Copper100 Platinum0-200 C, 0-150 Cor 20 - 140 x continuous, up to 200V or 100mA - 10 x for 10 Accuracy:Max error time:1 second4" Scale:100 deflectionSet point accuracy:Max error :1% of spanOperating time.

4 250m sec to 10 sec adjustableSet-point Adjustments:Single - 100% of scaleDouble - 98% of scaleMinimum span:2% between setpointsColour:RedOutput Relay:Mounted internallyOperation:SPDT contacts on each setpointOptional latching on either orboth Relays (077-301, 077-302or 077-307 only)Contact Rating:5A, 250V, 1000W non-inductiveAmbient TemperatureRange:-10 C to +60 C (+14 F to 140 F)Standard calibration:20 C (68 F)Panel Material:Ferrous or non-ferrousDielectric test:2600V for 1 minuteAuxiliary power : Dual rating - 120/240, 50 : 12V, 24V or 125V DCBurden.

5 3W maximumSpecificationBRNon reflecting windowCTCalibrated at customer specifiedtemperatureEBBoth Relays latch, external switch toresetEHHigh relay latch, external switch to resetELLow relay latch, external switch to resetFKFinger knob setpoint adjustersLBBoth Relays latch, remove auxiliarysupply to resetLHHigh Relays latch, remove auxiliarysupply to resetLLLow Relays latch, remove auxiliary supplyto resetPDElectrical heavily damped movementsPGPanel mounting gasketSLRed line on instrument dialSM Customer logo on instrument dial (Note.)

6 One off setup charge may apply)SZColoured band on instrument dialTPTPC-Time proportional control(proportional plus derivative control)OptionsConnectionsDimensions and panelcut-outLOWHIGH33 311 155 544 422 266 6 Low SetPointHigh SetPointMeter PointerAuxiliary Supply EnergisedRelay switch modes with input signalsin zone indicated by Meter pointer3 High relay1246897510 12 Input signal+ relayAuxiliarySupplyOptions110V~230V~12v 24V +-1/4-28 UNFF ixing studsTerminals10-32 UNF33/813/16331/3245/1633/833/845/16 ApprovalsE75911 SPWeb: Email: RelaysMeter Relays239 Series Analogue Meter RelaysFeaturesMonitors and controls anyvariable which can beconverted in to an signalRugged shock andvibration resistant designIndicator, Relays andpower unit in one housingControl function continuesif the indicator becomesdamagedStable electronicswitching circuit does notuse lamps, photocells,inductors or capacitorsTaut band, fluid dampedindicatorIsolated input signalLED relay state indicatorsMeter RelaysProduct CodeOne relay, two setpointsUpscale de-energised, down scale applications.

7 Liquid level control, load shedding & power factor relay, one set pointUpscale energised, downscale application: High Relays , two set pointsMid band de-energised, outside band applications: High and Low alarm, High alarm plus shut Relays , two setpointsBoth upscale energised, downscale de-energisedTypical application: High alarm plus Relays , two setpointsHigh and low midband energised, outside band de-energised. No time application: High alarm plus Relays , two set pointsBoth upscale de-energised,downscale application: Frequency relay, one set pointUpscale de-energised, downscale application: Low Relays , two set pointsMidband de-energised, outside band from from 2, 3 or 4 wire resistance temperature detector (RTD).

8 Typical application: Temperature indication / Relays , two set pointsMidband de-energised, outside band energised. Operates from thermocouple input. Cold junction compensation and thermocouple break protection are standard application: Temperature indication / 239 Meter Relays combine a highlyaccurate indicator with High and Low setpoint Relays . The Relays can operatealarm and control devices when themonitored signal value moves outside thechosen set point limits shown byadjustable red index single compact case houses the unitwhich requires only the input signal andpower supply thus saving space andinstallation monitoring/control current monitoringOverload alarmBattery monitoring/chargingTemperature indicationTemperature controlLoad sheddingPower factor correctionFrequency monitoringLevel controlWeb: Email.

9 RelaysMeter Relays239 Series Analogue Meter RelaysAdjustmentsFront panel comprises Set-point potentiometer(s),one per set-pointRear panel comprises Delay potentiometer(s), oneper set-pointMeasuring Input:Note:All inputs are average sensing, but Voltage:10V to 600V RMS (Sensitivity 1K /V to100K /V,max. Current:1mA to 15A RMS (20mVdrop) Voltage:10mV to 600V RMS (Sensitivity 1K /V to100K /V,max. Centre zerooption up to 600/0 Current:100 A to 15A (20mV drop) Centre zero option up to15/0/15 ampsMaximum continuousinput x rating continuously(600V max.)))

10 Maximum continuousinput x nominal (15A max.)Maximum short durationinput current6 x nominal for 6 seconds(30A max.)Frequency monitoring: 50Hz to 60Hz 10%Burden< time:1 second4 Scale:100 deflectionPanel material:Ferrous or non-ferrousDielectric test:2600V for 1 minuteAuxiliary supplyAux. voltage , 120, 220, 230, 240,277, 480V ( 20%)Aux. voltage , 24, 48, 120, or 135 Vmaximum 156V frequency50 to 60Hz 10%Burden: < and AccuracyIndicator accuracyClass range98% of scaleSet-point accuracy1% of rangeSet-point hysteresis 1% of rangeTrip of rangeRelay tripping time<1 secondTime delay0 to 20 seconds, adjustableby potentiometer on rearpanelOption.