JIS B 7994-2021.docx

JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssiat>nJISB7994-(JEMIMA/JSA)Continuousana1.yzerformercuryinf1.uegasICS13.(M0.40J71.(M0.40Refeenconumber:JISB7994:2021(E)DateofEstab1.ishment2016-11-21DateofRevision-2021-08-20DateofPub1.icNoticeinOfficia1.Gazette-2021-08-20Investigatedby：JapaneseIndustria1.StandardsCommitteeStandardsHoardforISOareaJISB7994:2O2bFirstEng1.isheditionpub1.ishedin20224)9Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.authority.©JSA2022A1.1.righMrv*rvM.1.nkMo<herwt*specified,nopartQfth1.*pub1.k*4tk>nnuybereproducedaru1.UUedinanyformorbyany11vjm,e1.ectronsorInedUnka1.IIKhJdMgphotocopyingandmk*rofi1.m,withoutpermixctonmwritingfromthrpubUchc.H71INPrintedInRpanContentsPage1 Scope2 Normativereferences3 Termsanddefinitions4 Typesandmeasuringrangesofana1.yzers5 Performanceofana1.yzer36 Configurationofana1.yzer46.1 Genera1.structura1.requirements46.2 Examp1.esofconguration47 Performancetests97.1 Testconditions97.2 GasesusedIbrtesting97.3 Ca1.ibration107.4 Testmethod108 Testreport119 Marking1210 Instructionmanua1.12AnnexAGnformative)Ca1.ibrationgaspreparationequipment13(i)ForewordThisJapaneseIndustria1.StandardhasbeenrevisedbytheMinisterofEconomy,TradeandIndustrythroughde1.iberationsattheJapaneseIndustria1.StandardsCommitteeastheresu1.tofproposa1.forrevisionofJapaneseIndustria1.StandardsubmittedbyJapanE1.ectricMeasuringInstrumentsManufacturersAssociation0E1.IM)JapaneseStandardsAssociation(JSA)withadraftbeingattached,basedontheprovisionofArtic1.e12.paragraph(1)oftheIndustria1.Standardizationctapp1.iedmutatiamutandispursuanttotheprovisionofArtic1.e16ofthesaidct.Theditionrep1.acesthepreviousedition(J1.SB7994:2016),whichhasbeentechnica1.1.yrevised.ThisJISdocumentisprotectedbytheCopyrightct.Attentionisdrawntothepossibi1.itythatsomepartsofthisStandardmayconf1.ictwithpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.There1.erantMinisterandtheJapaneseIndustria1.StandardsCommitteearenotresponsib1.eforidentifyinganyofsuchpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.Continuousana1.yzerformercuryinf1.uegas1 ScopeThisJapaneseIndustria1.Standardspecifiesrequirementsforana1.yzersforperformingcontinuousmeasurementoff1.uegasemittedfromafixedsourceforthepurposeofmonitoringitsgaseousmercuryconcentration(hereafterreferredtoasana1.yzers).Theprincip1.eofthemeasurementspecifiedinthisStandardisbasedonthereductionofmeta1.1.icmercuryormercuryCOmPOUndSintheuegasusingareducingagentandtheatomicabsorptionspectrometry.2 NormativereferencesPartora1.1.oftheprovisionsofthefo1.1.owingstandards,throughreferenceinthistext,constituteprovisionsofthisStandard.ThemostrecenteditionsofthestandardsGn"c1.udingamendments)indicatedbe1.owsha1.1.beapp1.ied.JISB7551Variab1.earea/JowmetersJISC1302Insuhtionresistancetesters.JISK0095Methodsforsamp1.ingofAUegasJISK0212Technica1.termsforana1.yticsIchemistry(optica1.part)JISK0215Technica1.termsforana1.ytica1.chemistry(Ana1.ytica1.instrumentpart)JISK0222MethodsfordeterminationofmercuryinstackgasJISK8136Tin(II)ch1.oridedihydrate(Heagent)JISK8139Mercury(II)ch1.oride(Reagent)JISK8541Nitricacid(Reagent)JISK8780Pyroga1.1.o1.(Reagent)JISK95021.(+)-scorbicacid(Rcgent)JISZ8103G1.ossaryoftermsusedinmeasurement3 TermsanddefinitionsForthepurposeofthisStandard,thefo1.1.owingtermsanddefinitions,andthosegiveninJISK0212.JISK0215.JISK0222andJISZ8103app1.y.3.1samp1.egasf1.uegaswhichisintroducedintothespectrometerafterbeingpretreatedthroughafi1.terorthe1.ike3.2fixedsourcef1.uegagaswhichisproducedbyburningfue1.sorothermateria1.sinafactoryorbusinessfaci1.ity,orgeneratedinvariouRmanufacturingprocesses,andwhichisdischargedintoductsorchimneysfordiffusionintheatmosphere3.3gaseousmercurymeta1.1.icmercuryanddiva1.entmercuryinagaseousstate3.4concentrationmassofatargetsubstancecontainedperunitvo1.umeofagaseouseubetanceundertheconditionofpressureof101.32kPa.temperatureof273.15Kanddrygas3.5zerodriftvariationoftheana1.yzerindicationoveracertainperiodoftime!respondingtotheminimumsca1.eoftheana1.yzer3.6pandriftvariationoftheana1.yzerindicationoveracertainperiodoftimecorrespondingtothemaximumsca1.eoftheana1.yzer3.7predeterminedf1.owratef1.owrateofasamp1.egas,ca1.ibrationgasorthe1.ikespecifiedforanana1.yzer3.8indicationerrorpercentageofthedifferencebetweenthenomina1.va1.ueandtheana1.yzerindicationofthencentrationofthemidwaypointca1.ibrationgasintroducedintoanana1.yzertothemaximumsca1.eoftheana1.yzer3.9responsetimesumofthe1.agtimeandrisetimerequiredforanana1.yzerindicationtoreachava1.uecorrespondingto90%ofthefina1.indicationafterintroductionofatestgas