文本内容:
BuildingControlSystemFieldSensorsSection:FieldSensorsFieldSensors-GuideSpecifications
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1.5FIELDSENSORS
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5.1Spa__TemperatureSensorsSpa__TemperatureSensorsshallbe5000or10000ohmthermistorswithwallplateadapterandblankcoverassembly.ThesensorshallincludeanintegraloccupancyoverridebuttonandshallalsoincludeaRJ11communicationsport.TemperatureSensorsshallincludespa__temperatureadjustmentslideswhereshownontheplans.Thespa__TemperatureSensorsshallbemountedapproxi__tely60”abovethefloor.
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5.2DuctTemperatureSensorsDuctTemperatureSensorsshallbe1000ohm__eragingRTD’sor10000ohm__eragingthermistors.Singlepointsensorsshallbe5000ohmor10000ohmthermistors.
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5.3OutsideAirSensorOutsideAirSensorshallbe5000or10000ohmthermistorwithintegralPVChousingand½”NPTconduitconnector.Sensorshallnotbelocatedindirectsunlightorwhereinfluen__dbyexhaustair.
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5.4WaterTemperatureSensorsWaterTemperatureSensorsshallbewellmounted
5.000or10000ohmthermistorsor1000ohmRTD’s.Locateasshownontheplansandprovideextendedneckwellswhereapplicableoninsulatedpipes.Changeoverthermostatsshallbe10000ohmstraponthermistorswithflexiblecopperplateandscrewclampforexternallymountingonthepipe.
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5.5CurrenttoPressureTransdu__rsCurrenttoPressureTransdu__rsshallconvertthe4to20______ogoutputsignalfromthecontrollerintoa3-15PSIpneu__ticoutput.Itshallcontaina0-30PSI__nifoldgaugethatindicatestheactualoutputairpressure.LED’sshallbeprovidedtoindicatepowerfillorbleedstatus.Itshallprovideformini__lairconsumptionandfeedbacktotheFieldInstalledControllerFICmoduleastotheactualoutputairpressure.
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5.6FlowSensorsFlowMeasuringSensorsshallbecompletewithsafetyshut-offvalvesandallne__ssaryconnections.Flowsensorsshallgeneratea4-20__proportionalsignal.
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5.7StatusIndicationStatusindicationforfansandpumpsshallbeprovidedbyacurrentsensingdevi__.Thedevi__shallbeinstalledatthemotorstarterormotortoprovideloadindication.Thedevi__shallconsistofacurrenttransformerasolidstatecurrentsensingcircuitwithadjustabletrippointandasolidstateorcontactswitch.AredlightemittingdiodeLEDshallindicatetheONOFFstatusoftheunit.TheswitchshallprovideasolidstateorN.O.contactforwiringbacktotheFieldInstalledController.
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5.8Filter/StatusSwitchFilterSwitchshallbeadifferentialpressuretypeadjustableacrosstherangeofthedevi__withasinglepoledoublethrowswitch.Therangeshallbe.05to2”watercolumn.
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5.9HighTemperatureDetectionThermostatHighTemperatureDetectionThermostatsshallbeprovidedtostopeachairhandlingsystemasindicatedandshallbeofthe__nualresettypewithsensingelementarrangedtoinsertintoductorcasingandshallbesetfor165F.Thedevi__shallh__edoublepoleNONCcontactsforsupplyfanshutdownandremotealarming.
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5.10LowTemperatureDetectionThermostatLowTemperatureDetectionThermostatsshallbeprovidedtostopeachairhandlingsystemasindicatedandshallbeofthe__nualresettypeunlessotherwisespecifiedwithsensingelementnotlessthan20feetlong.Anyone-footofthesensingelementwhensu__ectedtotemperaturesbelowitssetpointshallactuatethethermostatswitchregardlessoftemperaturebeingsensedbythere__inderoftheelement.Thedevi__shallh__edoublepoleNONCcontactsforsupplyfanshutdownandremotealarming.Ifalarmingisnotrequiredthedevi__shallh__easinglepoleNCcontact.
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5.11DuctRelativeHumiditySensorDuctRelativeHumiditySensorsshallh__earangeof0-100%RH.Thesensorsshallbeelectronictype.Themeasuringaccuracyshallbe3%overtherangeofthedevi__.
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5.12Spa__RelativeHumiditySensorSpa__RelativeHumiditySensorsshallh__earangeof0-100%RHandbeprovidedwithwallplateadapterandblankcover.Thesensorsshallbeelectronictype.Themeasuringaccuracyshallbe3%overtherangeofthedevi__.Spa__RHsensorsshallbemounted60”abovethefloor.
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5.13Spa__CO2SensorwithTemperatureSensorThewallmountedcombinationsensorsshallcontainaspa__temperaturesensorandCarbonDioxideCO2sensorinasingledecorativehousing.TheCO2sensorshallusesingle-beamabsorptioninfrareddiffusiontechnologyandshallh__eintegralprogrammingtoperformauto__ticbaselinecalibrationwithoutuserinte_____.Therecommended__nualrecalibrationperiodshallnotbelessthanfiveyears.TheCO2rangeshallbe0-2000PPMwith____ogoutputsof4-20__or0-10v.thepowersour__shallbe18-30VAC50/60Hz.Theaccuracyshallbe+/-100PPMat60-90F.ThesensorshallincludeanintegraloccupancyoverridebuttonasetpointadjustmentpotentiometerandanRJ14communicationport.Sensorshallbelocatedasshownontheplansandmountedapproxi__tely60”abovethefloor.
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5.14DuctCO2SensorTheCarbonDioxideCO2sensorforductmountingapplicationsshallbeusesingleordualbeamabsorptioninfrareddiffusiontechnologyandshallh__eintegralprogrammingtoperformauto__ticbaselinecalibrationwithoutuserinte_____.Therecommended__nualrecalibrationperiodshallnotbelessthanfiveyears.TheCO2sensorshallbemountedinanaspiratorboxthatmountsdirectlytotheduct.Theaspiratorboxshallbeequippedwithaninductiontubetodirectaside-streamofairfromtheductthroughtheCO2sensor.Ahingedclearac__ssdoorshallbeinstalledonthefrontoftheaspiratorboxtopermitac__sstothesensorandtopermitviewingthesensorwithoutopeningthedoor.TheCO2rangeshallbe0-2000PPMwith____ogoutputsof4-20__or0-10volt.Thepowersour__shallbe18-30VAC50/60Hz.Theaccuracyshallbe+/-50ppmat60-90F.Sensorshallbelocatedasshownontheplans.
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5.15Start/StopandStatusRelaysStart/StopandStatusRelaysshallbedesignedtoplugintoascrewterminal-mountingsocket.Relaysshallbesinglepoleordoublepoleasrequiredwithdoublethrowcontactsratedforrequiredduty.。