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1、STANDARDISA–75.13–1996FormerlyISA–S75.13–1996MethodofEvaluatingthePerformanceofPositionerswithAnalogInputSignalsandPneumaticOutputApproved26February1996TMISATheInstrumentation,–Systems,andAutomationSocietyISA-75.13-1996,MethodofEvaluatingthePerformanceofPositionerswithAnalogInputSig
2、nalsandPneumaticOutputISBN1-55617-592-2Copyright¤1996bytheInstrumentSocietyofAmerica.Allrightsreserved.PrintedintheUnitedStatesofAmerica.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformorbyanymeans(electronic,mechanical,photocopying,recording,or
3、otherwise),withoutthepriorwrittenpermissionofthepublisher.ISA67AlexanderDriveP.O.Box12277ResearchTrianglePark,NorthCarolina27709PrefaceThispreface,aswellasallfootnotesandannexes,isincludedforinformationalpurposesandisnotpartofISA-75.13-1996.Thisstandardhasbeenpreparedaspartoftheserv
4、iceoftheISA,theinternationalsocietyformeasurementandcontrol,towardagoalofuniformityinthefieldofinstrumentation.Tobeofrealvalue,thisdocumentshouldnotbestaticbutshouldbesubjecttoperiodicreview.Towardthisend,theSocietywelcomesallcommentsandcriticismsandasksthattheybeaddressedtotheSecre
5、tary,StandardsandPracticesBoard;ISA;67AlexanderDrive;P.O.Box12277;ResearchTrianglePark,NC27709;Telephone:(919)549-8411;Fax:(919)549-8288;E-mail:standards@isa.org.TheISAStandardsandPracticesDepartmentisawareofthegrowingneedforattentiontothemetricsystemofunitsingeneral,andtheInternati
6、onalSystemofUnits(SI)inparticular,inthepreparationofinstrumentationstandards,recommendedpractices,andtechnicalreports.TheDepartmentisfurtherawareofthebenefitstoUSAusersofISAstandardsofincorporatingsuitablereferencestotheSI(andthemetricsystem)intheirbusinessandprofessionaldealingswit
7、hothercountries.Towardthisend,thisDepartmentwillendeavortointroduceSIandacceptablemetricunitsinallnewandrevisedstandardstothegreatestextentpossible.TheMetricPracticeGuide,whichhasbeenpublishedbytheInstituteofElectricalandElectronicsEngineersasANSI/IEEEStd.268-1992,andfuturerevisions
8、willbethereferenceg
