BS EN 12919-1999 工作场所空气.体积流速大于51/min的化学试剂取样用泵.要求和试验方法

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【英文标准名称】:Workplaceatmospheres-Pumpsforthesamplingofchemicalagentswithavolumeflowrateofover51/min-Requirementsandtestmethods
【原文标准名称】:工作场所空气.体积流速大于51/min的化学试剂取样用泵.要求和试验方法
【标准号】:BSEN12919-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-12-15
【实施或试行日期】:1999-12-15
【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】:
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiestheperformancerequirementsforpumpsusedwithinthescopeofmeasuringmethodsforthedeterminationoftheconcentrationofchemicalagentsintheworkplaceatmosphere.Thepumpsconsideredinthisstandardaremainlyusedforaerosolsampling.Thisstandardisvalidforpumpswithanominalvolumetricflowratewithintherange51/minto4001/min.Thisstandardappliestoelectricallydrivenpumpsandalsotoairmovers,whichinduceairflowwiththeaidofanothermechanism,suchaspressuredropacrossacriticalnozzle.Thestandardappliestopumpswhich:—areattachedtoapersonandconnectedtothesamplerbymeansoftubingduringsampling;—arestationaryandconnectedtothesamplerbymeansoftubingduringsampling;—arebuiltintosamplingapparatuswhichiseitherattachedtoapersonorisoperatedinastationaryposition.Thisstandardappliestopumpswhosenominalvolumetricflowratecanbekeptconstantbyanautomaticcontrolleriftheflowresistancechangesduringsampling.Thecontrolrangeshallbespecifiedbythemanufacturer.Thisstandardalsoappliestopumpswhichareoperatedataconstantnominalvolumetricflowrate,sincetheyworkataconstantflowresistancepressuredropduringsampling(e.g.pumpswithrotatingcups).Forpumpswhichareattachedtoapersonduringsampling,ergonomicrequirementslikemaximummassshouldbetakenintoaccount.Theserequirementsarenotspecifiedinthisstandardindetail,butshouldbeconsideredbythemanufacturerwhenconstructingapump.
【中国标准分类号】:J72
【国际标准分类号】:13_040_30;23_080
【页数】:14P;A4
【正文语种】:英语

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