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1、Series101/121DifferentialPressureSwitchesForm468Series101/121differentialarerugged,pressureswitchesfield-mountedinstrumentsthatincorporateaflexiblemodulardesignprovidingcosteffectivesensingsolutions.Thetwo-piecepistondesignallowsforcompletedifferentialpressurereversalwit
2、houtdamage.SeePrincipledescriptiononpage2.ApplicationInformationBasicmodelswithstandardwettedpartsarenormallysuitableforair,oil,waterand101NNnoncorrosiveprocessfluids.SeetheQuick121NNSelectionGuideonpage4.Corrosiveserviceandspecialrequirementsmayrequireoptionalcomponents
3、.SeeHowtoOrderonpage3.Series101/121differentialpressureswitchesaresuitedforlow-to-highdifferentialpressure,fluidpowerorprocessapplicationswherehighandvaryingstaticpressures,highoverrange,proof,shockpressureorcycleratesare101AGexpected.121AGDesignandspecificationsaresubje
4、cttochangewithoutnotice.101L121LRegisteredQualitySystemtoISO9001RegisteredQualitySystemtoISO90011Series101/121DifferentialPressureSwitchesPrincipleNCNOCFh=Force,HiPressureFlFl=Force,LoPressureFs=Force,RangeSpringFdFd=Force,ResultantDifferentialFd=Fh-(Fl+Fs)FFshProcesspre
5、ssureissensedbyadiaphragm-pistoncombination.Hi-sidesystempressureactsonthepistontoAproductforceFh.ItiscounteractedbytheadjustablerangespringforceFsandLo-sidesystempressureactingonthebacksideofthepistontoproduceforceFl.TheresultantforceFdactsonthepistonandovercomestheforc
6、eoftheadjustablerangespring[Fd=Fh–(Fl+Fs)]andmovesashaftthatactuates(deactuates)anelectricalswitchingelement.ModularDesignDeliveryWiderangeofelectricalenclosuresRoutineshipments7to10workingdays.available.Emergencyshipmentsviaairsameday.ConstructionServiceRugged,highc
7、ycleratetolerance,longlife,notcriticaltovibration,highFactoryserviceengineersandareaoverrangeandproofpressures,factoryrepresentativesprovideeffectivewithstandsfullHiandLosideandpromptworldwideservice.pressurereversals,excellentWettedPartscorrosionresistancetohostileenvi
8、ronments.Wideselectionofmaterials.FieldAdjustableInstrumentQualityFeaturesandBenefitsExcellentresolut
