Types of Sensors各种类型的传感器外文翻译.docx
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TypesofSensors各种类型的传感器外文翻译
TypesofSensors
Ⅰ.Pressuresensors
ModelFDS05-PDiffusedSiliconPressureSensor:
Teeintelligentindustrialpressuresensoradoptstheimportedsensorofhighquality.withgreatdefendinggrade,itcanworkinanycausticcondition.Bylinkingexternal,linkingexternalcanola,itcanmeasurethetemperatureofthemediumwithhightemperature.Itisstableandcapableoflimitingcurrentinpositivedirectionandprotectinginnegativedirection.Itiswiththeabilityofintelligenttemperatureandlinearitycompensationwiththetemperatureof一40℃~+140℃.Itiswidelyusedinpetrifaction,metallurgy,electricpowerandlightspinning.
Ⅱ.Loadcell&torquesensors
SuspendedarmtypeBx5:
Itselastomericadoptscutting(orcurved)hanginggirderconfiguration,soitislowinheightandwithhighconfigurationintensity.Itisgoodagainstfatigueandeccentricity.Itisstableandreliableinproductperformances,highinprecision,andconvenientinmount-upanduse.Itissuitableforforcemeasurementandweightingsuchasstrapbalance,chutebalance,flatbalanceandgroundbalance.Loadingtype:
pulloxpush.
Ⅲ.Temp&humsensors
MoteMSTBTemperatureTransducer:
Asensormoduleisfittedinthetemperaturetrans-ducker’sterminalblock,whichusesaspecificchiptomagnifyandhaslinearizationapproachtoimprovethemeasurementprecision.Tiecoldjunctionneedsnocompensation.Saitiswithhighdirectloadcapacity,largetransferdistanceandstrongabilityofants-externalinterference。
Itiswidelyusedfortemperaturemeasurementinelectricpower,petroleum,chemicals,buildingmaterials,andscientificresearch.
Ⅳ.Displacementsensors
EddyCurrentDisplacementVibrationSensorST-1:
Electricvortexsensorsarenon-con-tactdisplacementandvibration,sensorswhichadopthighfrequencyelectricvortexeffectprinciple.theycandonon-contactmeasurementforthemovingparametersofthemovingmetalobject,especiallyfortheobjectswithinmeasurementrange.Theyareusedfortong-termcheckingandmeasuringofvibrationsanddisplacementinmechanismandheatdilationofvortexandmachineshell,on-lineautomaticcheckingandautomaticcontrollingofproductionline,measurementofmanifoldsmalldistanceendsmallmovinginscientificresearchandsoon.Atpresent,theyarewidelyusedinenergysources.chemicals,medicine,vehicles,metallurgy,ranchingmaking,warindustry,scientificresearch,teachingandotherfields.
V.Flowsensors
VortexFlowsensorLUGB-A:
LUGB-Aseriesintelligentvortexflowsensorsarelocaledisplayinstrumentswhosemaincomponentsarevortexflowsensorandhard-coreissingechipmicroprocessorofmicro-power.Theproductsadoptmicrocomputerandmicro-powertechniques,Theyaresaronginfunction,compactinconfigurationandsimpleinmanipulation.theyaregreatinstruments
forflowmeasurementofliquid,gasandsteaminpetroleum,chemicals,electricpower,metallurgyandotherfields.
Ⅵ.Liquid-levelsensors
UltrasonicAirborneLevelMeterHD700:
TheultrasonicliquidlevelmeterHD700adoptstheprincipleofmeasurementoftime-of-arrivaltomeasuretheheightofthelevel。
Itisnon-contactinstrument,goodresistancetodisturbanceandcausticity,easytomount-up,maintainandusesuitableforbeingusedinsophisticatedenvironmentoftheindustrylocale.Itadoptsthespecificultrasonicsensorwhichhassmallpowerandreceivingandsendinginsmallblandarea.Itishighinprecision,stablewithline-measurement,capableoftemperaturecompensationandagainsttocausticity,Theheightofthelevelisdisplayeddigitally,andthe4-20mAsignalisoutputtedatthesametime.
Ⅶ.Displayinstruments
DigitalSingleInputIntelligentInstrumentX5T:
X5Tseriesintelligentinstruments,combinedwithvariousanalogsensorsandtransmitters,implementmeasurementdisplay,transformation,.trackrecordandwarningoftemperature,pressure,flow,liquidlevel,elements,forcedisplacement.
Ⅷ.V&Asensors
CurrentTransducerLA58一P:
Currentsensorofcloseloop(compensated)usingHallprinciple.IthasaninsulatingcrustinaccordwithLJG94-VUstandard,installedonprintingplugboard.Characteristicssuchasexcellentprecision,welllinearity,lowtemperatureexcursion,optimalreacttime,widefrequencyband,noplugdamageandstronganti-jamming.Usefieldsuchasalternatingcurrentfrequencytiming,servopole,statictransformdraggedbydirectcurrentdynamo,batterypowersupply,UPS,SMPSandelectricweldingpowersupply.
VoltageTransducerLV28-P:
Voltagesensorofcloseloop(compensated)usingHallprinciple,IthasaninsulatingcrustinaccordwithUL94-V0standard.Whenwemeasure。
one’,voltage,thescalebetweenoriginalcurrentandmeasuredvoltagemustbeconfirmedbyuserselected。
exteriorresistanceRl,andalsoR1shouldbeplacedonoriginalloopinseries.Characteristics:
excellentprecision,welllinearity,lawtemperatureexcursion,optimalreacttime,widefrequencyhand,noplugdamageandstronganti-jamming.Usefield:
alternatingcurrentfrequencytiming,servopole,statictransformdraggedbydirectcurrentdynamo,batterypowersupply,UPS,SMPSandelectricweldingpowersappily.
PressureandpressureTransmitters
Pressureariseswhenaforceisappliedoveratearea.ProvidedtheforceisoneNewton(N)anduniformlyavertheareaofonesquaremeter(rn2),thepressurehasbeendesignatedonePascal(Pa=N/rn2)。
Pressureisauniversalprocessingcondition.Itisalsoaconditionoflifeonthisplanet:
wediveatthebottomofanatmosphericoceanthatextends
Upwardformanymiles.Thismassofairhasweight,andthisweightpressingdownwardcausesatmosphericpressure.Water,afundamentalnecessityoflife,issuppliedtomostofusunderpressure.Inthetypicalprocessplant,pressureinfluencesboilingpointtemperaturescondensingpointtemperatures,processefficiency,costs,andotherimportantfactors.Themeasurementandcontrolofpressure,orlackofit(vacuum)inthetypicalprocessplantiscritical.
Theworkinginstrumentsintheplantusuallyincludethesimplepressuregauges,theprecisionrecordersandindicators,andthepneumaticandelectronicpressuretransmitters.Apressuretransmittermakesapressuremeasurementandgenerateseitheraproportionalorelectricalsignalisproportionaltothepressurebeingsensed.
Intheprocessplant,itisimpracticaltolocatethecontrolinstrumentsgutintheplaceteartheprocessItisaltotruethatmostmeasurementsareoateasilytransmittedfromsomelocatingPressuremeasurementisanexception,butifahighpressureofsomedangerouschemicalistobeindicatedorrecordedseveralhundredfeetfromthepointofdangerouschemicalistobeindicatedorrecordedseveralhundredfeetfromthePontofmeasurement,ahazardmaybeformthepressureorfromthechemicalcarried.
Toeliminatethisproblem,asignaltransmissionsystemwasdeveloped.Thissystemisusuallyeitherpressure(airpressure)orelectrical.Usingthetransmissionsystem,itwellbepossibletoinstallmostoftheindicating,recording,aridcontrolinstrumentsinonebastion,Thismakesitpracticalforaminimumnumberofoperatorstoruntheplantefficiently
Whenapneumatictransmissionsystemisemployed,themeasurementsignalisconvettedintopneumaticsignalbythetransmitterscaldfrom0to100percentofthereassuredvalue.thistransmitterismountedclosetothepointofmeasurementintheprocess,Thetransmitteroutput-airpressurefarapneumatictransmitter--ispipedtotherecordingorcontrolinstrument.Thestandardoutputrangeforapneumatictransmitteris20to
100kPa,whichisalmostuniversallyused.
Whenanelectronicpressuretransmitterisused,thepressureisconvertedtoelectricalsignalthatmaybetheelectriccurrentorvoltage.Itsstandardrangeisfrom4to20mAforthecurrentsignalorfrom1to5VDCforthevoltagesignal.Now,anothertypeofelectricalsignal,whichisbecomingcommon,isthedigitalordiscretesignal.Theuseofinstrumentsandcontrolsystemsbasedoncomputersormicroprocessorsisincreaseduseofthistypeofsignal.
Sometimesitisimportantforanalysistoobtaintheparametersthatdescribethesensor/transmitterbehavior.Thegainisfairlysimpletoobtainoncethespanisknownconsideranelectronicpressuretransmitterwitharangeof0~600kpa.Thegainisdefinedasthechangeinoutputdividedbythechangeininput。
inthiscasetheoutputelectricalsignal(4~20rnADC)andtheinputisprocesspressure(0~60kPa).Thusthegain
Kr=(20mA-4rnA)/(600KP-0kPa)=16mA/600KPa=0.027mA/kPa
TemperatureMeasurement
Temperaturemeasurementisimportanttheindustrialcontrol,asdirectindicationsofthesystemorproductstateandasindirectindicationsofsuchfactorsasreactionratesenergyflow,turbineefficiency,andlubricantquality.Presenttemperaturescaleshavebeeninuseforshout200years,Theearliestinstrumentswerebasedonthethermalexpansionofgasesandliquids.Suchfilledsystemsarestillemployed,althoughmanyothertypesofinstrumentsareavailable.Representativetemperaturesensorsinclude:
thefilledthermalsystems,theliquid-in-glassthermometers,thethermocouples,theresistancetemperaturedetectors(R'I'DS),theHermiston,thebimetallicdevicesopticalandradiationpyrometersandthetemperature-sensitivepaints.
Theadvantages}felectricalsystemsincludehighaccuracyandsensitivity,practicalityofswitchingorscanningseveralmeasurementpoints,largerdistancespossiblebetweenmeasuringelementsandcontrollers,thereplacement(ratherthancompletesystem),thefastresponse,andtheabilityxomeasurehighertemperature.Amongtheelectricaltemperaturesensors,thethermocouplessensors,thethermocouplesandresistancetemperaturedete