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【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixturesusingdynamicvolumetricmethods-Continuoussyringeinjectionmethod
【原文标准名称】:气体分析.用动态容量法制备标定用混合气体.持续喷射器注入法
【标准号】:BSISO6145-4-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-03-23
【实施或试行日期】:2005-03-23
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:控制样品;校准气体;混合气体;气体容量分析;试验气体;气体分析;注射器;校正;注入法;准备
【英文主题词】:Calibration;Calibrationgases;Controlsamples;Gasanalysis;Gasmixtures;Gas-volumetricanalysis;Injectionmethods;Preparation;Syringes;Testgases
【摘要】:ThispartofISO6145specifiesamethodforcontinuousproductionofcalibrationgasmixtures,containingtwoormorecomponents,frompuregasesorothergasmixturesbycontinuousinjectionofthecalibrationcomponent(s)intoacomplementarygasstreambymeansofasyringe.Ifpre-mixedgasesareusedinsteadofpuregases(seeAnnexA),muchlowervolumefractionscanbeobtained.Thevolumeflowrates,fromwhichthevolumefractionsaredetermined,canbecalculatedfromtheindividualflowratesandcanbeindependentlymeasuredbyasuitablemethodgiveninISO6145-1.Themeritsofthemethodarethatasubstantialquantityofthegasmixturecanbepreparedonacontinuousbasisandthatmulti-componentmixturescanbepreparedalmostasreadilyasbinarymixturesiftheappropriatenumberofsyringesisutilized,orifthesyringealreadycontainsamulti-componentmixtureofknowncomposition.Thismethodalsoprovidesaconvenientmeansforincreasingthevolumefractionofthecalibrationcomponentinthemixtureinsmallsteps.Itisthereforeausefulmethodforevaluationofothercharacteristicsofgasanalysers,suchasminimumdetectionlimitanddeadzone,aswellasaccuracy.Therelativeexpandeduncertaintyinthevolumefractionobtainableforabinarymixture(atacoveragefactorof2)is5%andtherangeofapplicabilityis10to10.
【中国标准分类号】:Z15
【国际标准分类号】:71_040_40
【页数】:24P.;A4
【正文语种】:英语