66放大和减小继电器，Siemens66继电器66放大和减小继电器，Siemens66继电器简单介绍PneumaticsignalconditioningprovidescontrolcircuitdesignflexibilityPowdercoatingprovidesimprovedcorrosionresistance66放大和减小继电器AmplifyingandReducingRelaysSiemens66继电器的详细介绍Features&BenefitsPneumaticsignalconditioningprovidescontrolcircuitdesignflexibilityPowdercoatingprovidesimprovedcorrosionresistanceDescriptionTheModel66AmplifyingandReducingRelaysareusedtoincreaseordecreasecontrol-circuitpressuresignals.Itsinputpressure,actingupontheeffectiveareaofthetopdiaphragm,producesaforcethatisbalancedbytheforceproducedbytheoutputpressureappliedovertheeffectiveareaofthelowerdiaphragm.Anyimbalanceintheseopposingforceswilloperatetheplunger,increasingordecreasingairsupplytotheoutputchamber.(Theamplifyingorreducingratioisfixedbytheratioofinput-to-outputdiaphragmareas.)Anincreaseininputopensthepilotvalvetoadmitsupplyairdirectlytotheoutput.Adecreaseininputopenstheexhaustporttoexhaustairfromtheoutput.)