HGT20505-2000过程测量与控制仪表的功能标志及图形符号

UDCTRADESTANDARDOFTHEPEOPLE'SREPUBLICOFCHINA中华人民共和国行业标准PHG/T20505-2000FunctionalIdentificationandSymbolsforProcessMeasuringandControllingInstrumentation过程测量与控制仪表的功能标志及图形符号Issuedon:November22,2000Implementedon:June1,2001Issuedby:NationalIndustryOfficeofPetroleumandChemistryHGTRADESTANDARDOFTHEPEOPLE'SREPUBLICOFCHINA中华人民共和国行业标准FunctionalIdentificationandSymbolsforProcessMeasuringandControllingInstrumentation过程测量与控制仪表的功能标志及图形符号HG/T20505-2000Compiledby:ChengdaChemicalEngineeringCompanyofChinaApprovedby:NationalIndustryOfficeofPetroleumandChemistryImplementedon:June1,2001NationalStandardCompilationCenterforEngineeringEstablishmentofChemicalIndustry(OriginallycalledNationalStandardCompilationCenterforEngineeringEstablishmentofChemicalIndustryDepartment)2001BeijingNOTICEThiscodeiswritteninChineseandEnglish.TheChinesetextshallbetakenastherulingoneintheeventofanyinconsistencybetweentheChinesetextandtheEnglishtext.Contents1General................................................................................................................................................12FunctionalIdentificationofInstrumentation.....................................................................................22.1FunctionalIdentificationComposition...........................................................................................22.2InstrumentTagNumber..................................................................................................................23LetterCodeandCommonlyUsedAbbreviateofFunctionalIdentificationforInstrument................53.1LetterCodeofFunctionalidentification..........................................................................................53.2SymbolsforAdditionalFunctionstoLetterY...............................................................................103.3CommonlyUsedAbbreviateLetterforInstrumentation..............................................................124GraphicalSymbolsforInstrumentation..........................................................................................154.1GraphicalSymbolUsedforInstrumentationMonitoring.............................................................154.2GraphicalSymbolforDetectingPointandConnectingLine.......................................................174.3GraphicalSymbolforFlowDetectingInstrument.........................................................................194.4GraphicalSymbolforActuatingDevice......................................................................................214.5GraphicalSymbolforSelf-operatedControlValve.....................................................................244.6GraphicalSymbolforAuxiliaryFacilitytoInstrumentation........................................................245IllustrationsonGraphicalSymbolApplication...............................................................................265.1GraphicalSymbolIllustrationonDetectingSystem......................................................................265.2GraphicalSymbolIllustrationonAuto-controlSystemandProgramControlSystem..................345.3GraphicalSymbolIllustrationonSafetyInterlockSystem............................................................395.4GraphicalSymbolIllustrationforTypicalControlSystem............................................................41Explanationonspecificwordofthiscode..............................................................................................43ClauseExplanation..................................................................................................................................4411General1.0.1Thiscodeisapplicableforthedesignofinstrumenttagnumberdetermination,P&ID(PipeandInstrumentFlowDiagram)andmonitorsystemschematicdiagram,etc.thathappenedininitialdesign/basicdesign,engineeringdesign/constructionaldrawingdesignofautocontrolsysteminchemicalindustry.Thiscode,togetherwith“GraphicalSymbolandLetterCodeUsedforEngineeringDesignofAutoControlIndustry”(HG/T20637.2),formsregulartechnicalstandardsforautocontroldesignofchemicalindustryconcerninggraphicalsymbol.1.0.2Relevantstandardsindicatedbelow:ISA-S5.1“SymbolandIdentificationforInstrumentation”HG/T20637.2“GraphicalSymbolandLetterCodeUsedforEngineeringDesignofAutoControlIndustry”Uponimplementationofthiscode,requirementsfromrelevantstandardsexistednationallyaretobeconformed.22FunctionalIdentificationofInstrumentation2.1FunctionalIdentificationComposition2.1.1Functionalidentificationforinstrumentationiscomposedofonecapitalletterandoneortwotothreesequentletters.Examplesindicatedbelow:Example1:PI–FunctionalidentificationP–Capitalletter(indicatingmeasuredvariable)I–Sequentletter(indicatingreadoutfunction)Example2:TIC–FunctionalidentificationT–Capitalletter(indicatingmeasuredvariable)IC–Sequentletter(indicatingreadoutfunction+outputfunction)Example3:HIC–FunctionalidentificationH–Capitalletter(indicatinginitiatingvariable)IC–Sequentletter(indicatingreadoutfunction+outputfunction)Example4:FFICA–FunctionalidentificationFF–