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《ISA 12.10-1988 Area Classification in Hazardous (Classified) Dust Locations》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在行業(yè)資料-天天文庫。
1、STANDARDISA–12.10–1988FormerlyISA–S12.10–1988AreaClassificationinHazardous(Classified)DustLocationsApproved29January1988TMISATheInstrumentation,–Systems,andAutomationSocietyISA-12.10-1988AreaClassificationinHazardous(Classified)DustLocationsISBN1-55617-095-5Copyright1988bytheI
2、nstrumentSocietyofAmerica.Allrightsreserved.PrintedintheUnitedStatesofAmerica.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformorbyanymeans(electronic,mechanical,photocopying,recording,orotherwise),withoutthepriorwrittenpermissionofthepublis
3、her.ISA67AlexanderDriveP.O.Box12277ResearchTrianglePark,NorthCarolina27709PrefaceThisprefaceisincludedforinformationalpurposesandisnotpartofISA-12.10-1988.ThisstandardhasbeenpreparedaspartoftheserviceofISAtowardagoalofuniformityinthefieldofinstrumentation.Tobeofrealvalue,thisdo
4、cumentshouldnotbestatic,butshouldbesubjecttoperiodicreview.Towardthisend,theSocietywelcomesallcommentsandcriticisms,andasksthattheybeaddressedtotheSecretary,StandardsandPracticesBoard,ISA,67AlexanderDrive,P.O.Box12277,ResearchTrianglePark,NC27709,Telephone(919)549-8411,e-mail:s
5、tandards@isa.org.TheISAStandardsandPracticesDepartmentisawareofthegrowingneedforattentiontothemetricsystemofunitsingeneral,andtheInternationalSystemofUnits(SI)inparticular,inthepreparationofinstrumentationstandards.TheDepartmentisfurtherawareofthebenefitstoU.S.A.usersofISAstand
6、ardsofincorporatingsuitablereferencestotheSI(andthemetricsystem)intheirbusinessandprofessionaldealingswithothercountries.Towardthisend,thisDepartmentwillendeavortointroduceSI-acceptablemetricunitsinallnewandrevisedstandardstothegreatestextentpossible.TheMetricPracticeGuide,whic
7、hhasbeenpublishedbytheInstituteofElectricalandElectronicsEngineersasANSI/IEEEStd.268-1982,andfuturerevisionswillbethereferenceguidefordefinitions,symbols,abbreviations,andconversionfactors.ItisthepolicyofISAtoencourageandwelcometheparticipationofallconcernedindividualsandintere
8、stsinthedevelopmentofISAstandards.ParticipationintheIS
