【英文标准名称】:Specificationforopenpathapparatusforthedetectionofcombustibleortoxicgasesandvapours-Generalrequirementsandtestmethods
【原文标准名称】:可燃的或有毒性的气体和蒸气的检测用开路仪器规范.一般要求和试验方法
【标准号】:BSEN50241-1-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-09-15
【实施或试行日期】:1999-09-15
【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】:气体检测器;测量仪器;规范(验收);气体燃料;气体;电驱动装置;可燃性环境;定义;试验;电气器具;燃烧气体;毒物;安全要求;蒸气;试验方法
【英文主题词】:Burninggases;Definitions;Electricappliances;Electrically-operateddevices;Flammableatmospheres;Fuelgases;Gasdetectors;Gases;Measuringinstruments;Safetyrequirements;Specification(approval);Testmethods;Testing;Toxic;Vapours
【摘要】:ThisEuropeanStandardspecifiesgeneralrequirementsfortheconstructionandtestingofapparatusforthedetectionandmeasuringofcombustibleortoxicgasesorvapoursinambientairbymeasuringthespectralabsorptionbythegasesorvapoursoverextendedopticalpaths,rangingtypicallyfromonemetretoafewkilometres.SuchapparatusmeasurestheintegralconcentrationoftheabsorbinggasovertheopticalpathinunitssuchasLELmetreforcombustiblegasesandppmmetrefortoxicgases.NOTE1Actualvaluesofconcentrationcanonlybededucedwhereitcanbeestablishedthattheconcentrationisuniformovertheopticalpath,asforexampleinveryshortopticalpaths(