BS 8452-2005 液体装置用夹件(外部安装)渡越时间测量技术的使用.指南

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【英文标准名称】:Useofclamp-on(externallymounted)transittimemeteringtechniquesforliquidapplications-Guide
【原文标准名称】:液体装置用夹件(外部安装)渡越时间测量技术的使用.指南
【标准号】:BS8452-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-02-21
【实施或试行日期】:2005-02-21
【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】:液体;仪表;渡越时间器件;夹件(机械)
【英文主题词】:liquids;clamps(mechanical);meters;transit-timedevices
【摘要】:ThisBritishStandardidentifiesfactors,includinginstallationeffects,pipework,fluideffects,operationaleffectsandsupplierspecificeffects,whicharelikelytoaffecttheperformanceofclamp-on(externallymounted)ultrasonictransittimeflow-meters(TTUF).Thisincludeshybridspooltypeclamp-onmeterswherethespoolpieceisspecificallymachinedtosuittheclamp-onmeter.Thisstandardexaminesthelikelyeffectofthesefactors,identifiesbestoperationalpracticeforsuchmetersandprovidesestimatesoftheoveralluncertaintythatcanbeachievedwhenemployingbestpractice.Thisstandardprovidesadescriptionofthenon-invasiveTTUF,typicalapplicationareas,theperformancemeasureswhichshouldbeusedinassessingthemeterperformanceandthelikelyperformanceintermsoferror,repeatabilityandreproducibilitywhenusedunderidealflow,pipe,fluidandoperationalconditions.Italsocoverstheinstallationoftransittimemeters,wherethetransducersareclampedontotheoutsideofaproprietarymeterspool.Therearecurrentlytwoothercommonlyusednon-invasiveultrasonicflowmeasurementtechnologies.ThesearetheDopplerultrasonicflow-meter(DUF)andthecross-correlationultrasonicflow-meter(CCUF).ThescopeofthisBritishStandardisrestrictedtotheuseoftransittimemeterssincesuchflow-metersarelikelytogiverisetoameteringtechniquewiththewidestrangeofapplicationandthehighestaccuraciesandlowestuncertainties.Becauseoftheneedtodistinguishbetweenthedifferentultrasonictechnologiesandtheirapplications,AnnexBandAnnexCprovideacomparativeoverviewofDopplerultrasonicflow-metersandcross-correlationultrasonicflow-meters.
【中国标准分类号】:A50
【国际标准分类号】:17_120_10
【页数】:46P.;A4
【正文语种】:英语