ASTM D4298-2004(2010) 相互比较渗透管以确定示踪能力的标准指南

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【英文标准名称】:StandardGuideforIntercomparingPermeationTubestoEstablishTraceability
【原文标准名称】:相互比较渗透管以确定示踪能力的标准指南
【标准号】:ASTMD4298-2004(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D22.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:intercomparison;permeationtube;standardreferencematerial;traceability;Calibration--air/atmosphericanalysisinstruments;Gases;Airpollution/toxicityassessment;Permeation;Traceability
【摘要】:Theaccuracyofairpollutionmeasurementsisdirectlydependentuponaccuratecalibrations.Suchmeasurementsgainaccuracyandcanbeintercomparedwhenthemeasurementproceduresaretraceabletonationalmeasurementstandards.Thisguidedescribesproceduresforenhancingtheaccuracyofairpollutionmeasurementswhichmaybespecifiedbythoseorganizationsrequiringtraceabilitytonationalstandards.1.1ThisguidecoverstwoproceduresforestablishingthepermeationrateofapermeationtubeanddefiningtheuncertaintyoftheratebycomparisontoNationalInstituteofStandardsandTechnology''sStandardReferenceMaterials(SRM).1.2ProcedureAconsistsofadirectcomparisonofthepermeationrateofthedeviceundergoingcalibrationwiththatofanSRM.1.3ProcedureBconsistsofagravimetriccalibrationprocessinwhichacertifiedpermeationtubeisusedasaqualitycontrolforthemeasurements.1.4Bothproceduresarelimitedtothecasewhereasuitablecertifiedpermeationdeviceisavailable.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(See8.2onSafetyPrecautions.)
【中国标准分类号】:A50
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:英语