Designation:D6543−20´1StandardGuidetotheEvaluationofMeasurementsMadebyOnlineCoalAnalyzers1ThisstandardisissuedunderthefixeddesignationD6543;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Aneditorialcorrectionwasmadeto7.3.3.5inNovember2022.1.Scope1.1Thisguideprovidestechniquestobeusedfortheevaluationofthemeasurementperformanceofonlinecoalanalyzers.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D121TerminologyofCoalandCokeD2013PracticeforPreparingCoalSamplesforAnalysisD2234/D2234MPracticeforCollectionofaGrossSampleofCoalD6518PracticeforBiasTestingaMechanicalCoalSam-plingSystem(Withdrawn2008)3D7430PracticeforMechanicalSamplingofCoalE178PracticeforDealingWithOutlyingObservations3.Terminology3.1Definitions—Foradditionaldefinitionsoftermsusedinthisstandard,refertoTerminologyD121.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1analyzersystem,n—acoalqualitymeasurementsys-temwhichincludesanonlinecoalanalyzerandwhichmayincludeoneormorestagesofacoal-samplingsystem.3.2.2calibration,n—mathematicalmodelingofanalyzerandcomparativecoalsamplingandanalysisdata.3.2.2.1Discussion—Factorsfromthemodelareusedintheonlineanalyzercontrolsoftware.3.2.3full-streamanalyzer,n—ananalyzersystemthatinter-rogatesthecoalonaprocessbelt.3.2.4Grubbsestim...
