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1、STANDARDISA–82.03–1988FormerlyISA–S82.03–1988SafetyStandardforElectricalandElectronicTest,Measuring,Controlling,andRelatedEquipmentPartialRevisionandRedesignationofANSIC39.5-1974Approved18February1988TMISATheInstrumentation,–Systems,andAutomationSocietyISA-82.03-1988SafetyStandard
2、forElectricalandElectronicTest,Measuring,Controlling,andRelatedEquipmentISBN1-55617-102-1Copyrightè1988bytheInstrumentSocietyofAmerica.Allrightsreserved.PrintedintheUnitedStatesofAmerica.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformorbyanym
3、eans(electronic,mechanical,photocopying,recording,orotherwise),withoutthepriorwrittenpermissionofthepublisher.ISA67AlexanderDriveP.O.Box12277ResearchTrianglePark,NorthCarolina27709PrefaceThisprefaceisincludedforinformationpurposesandisnotpartofISA-82.03-1988.Thisstandardhasbeenpre
4、paredaspartoftheserviceofISAtowardagoalofuniformityinthefieldofinstrumentation.Tobeofrealvalue,thisdocumentshouldnotbestatic,butshouldbesubjecttoperiodicreview.Towardthisend,theSocietywelcomesallcommentsandcriticisms,andasksthattheybeaddressedtotheSecretary,StandardsandPracticesBo
5、ard,ISA,67AlexanderDrive,P.O.Box12277,ResearchTrianglePark,NC27709,telephone(919)549-8411,e-mail:standards@isa.org.TheISAStandardsandPracticesDepartmentisawareofthegrowingneedforattentiontothemetricsystemofunitsingeneral,andtheInternationalSystemofUnits(SI)inparticular,intheprepar
6、ationofinstrumentationstandards.TheDepartmentisfurtherawareofthebenefitstoU.S.A.usersofISAstandardsofincorporatingsuitablereferencestotheSI(andthemetricsystem)intheirbusinessandprofessionaldealingswithothercountries.Towardthisend,thisDepartmentwillendeavortointroduceSI-acceptablem
7、etricunitsinallnewandrevisedstandardstothegreatestextentpossible.TheMetricPracticeGuide,whichhasbeenpublishedbytheInstituteofElectricalandElectronicsEngineersasANSI/IEEEStd.268-1982,andfuturerevisionswillbethereferenceguidefordefinitions,symbols,abbreviations,andconversionfactors.
8、ItisthepolicyofISAtoencourageandw
