【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixtures-Staticvolumetricmethod
【原文标准名称】:气体分析.校准气体混合物的制备.静态测定体积法
【标准号】:BSENISO6144-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2003-03-25
【实施或试行日期】:2003-03-25
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;校准;校准气体;化学分析和测试;对照试样;气体分析;气体混合物;气体;检验设备;材料测试;数学计算;测量;方法;生产;静态的;试验气体;体积;测定体积的;容量分析
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesamethodforthepreparationofcalibrationgasmixturesbyastaticvolumetricmethodandprovidesaprocedureforcalculatingthevolumetriccompositionofthemixture,ftcanbeusedeitherwithbinarygasmixtures(containingonecalibrationcomponentinacomplementarygas,whichisusuallynitrogenorair)orwithmixturescontainingmorethanonecomponentinthecomplementarygas.ThisInternationalStandardalsospecifieshowtheexpandeduncertaintyinthevolumefractionOfeachcalibrationcomponentinthemixtureisdeterminedbyarigorousevaluationofallthemeasurementuncertaintiesinvolved,includingthoseassociatedwiththeapparatususedforthepreparationofthegasmixtureandthoseassociatedwiththeexperimentalprocedureitself.NOTE1ThisInternationalStandardisgenerallyapplicabletothepreparationofcalibrationgasmixturescontainingcalibrationcomponentsintheconcentrationrange10×10(10ppb—partsperbillion)to50×10(50ppm—partspermillion)byvolume.However,gasmixturesmaybepreparedatlargerorsmallervolumefractions,providedthatthecomponentsusedinthestaticdilutionprocessareselectedappropriately.NOTE2Arelativeexpandeduncertaintyofnotgreaterthan±1%atalevelofconfidenceof95%maybeachievableattheseconcentrations,providedthat:—thepuritiesoftheparentgaseshavebeendeterminedbyanalysisandanysignificantimpuritiesandtheuncertaintiesintheirmeasuredconcentrationshavebeentakenintoaccount;—nosignificantadsorptioneffectsorchemicalreactionsoccurbetweenthegaseousconstituentsandtheinternalsurfacesoftheapparatus,andtherearenoreactionsbetweenanyofthegaseouscomponents,i.e.betweenthecalibrationcomponentandcomplementarygasorbetweenthecalibrationcomponentsthemselves;—alltherelevantapparatususedinthepreparationofacalibrationgasmixturehavebeencalibratedwithassignedmeasurementuncertaintieswhichareappropriatetocalculatingthefinalexpandeduncertaintyforthecalibrationgasmixtureprepared.
【中国标准分类号】:G86
【国际标准分类号】:71_040_40
【页数】:38P;A4
【正文语种】:英语