IEC 61779-5-1998 可燃性气体的检测和测量用电气设备第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求

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【英文标准名称】:Electricalapparatusforthedetectionandmeasurementofflammablegases-Part5:PerformancerequirementsforgroupIIapparatusindicatingavolumefractionupto100%gas
【原文标准名称】:可燃性气体的检测和测量用电气设备第5部分:II类设备(指示气体的体积百分率最大为100%)的性能要求
【标准号】:IEC61779-5-1998
【标准状态】:作废
【国别】:国际
【发布日期】:1998-04
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC31L
【标准类型】:()
【标准水平】:()
【中文主题词】:可燃性环境;电驱动装置;测量;气体;电气器具;电气工程;气体燃料;煤气;规范(验收)
【英文主题词】:Electricappliances;Electricalengineering;Electrically-operateddevices;Flammableatmospheres;Fuelgases;Gases;Measurement;Specification(approval)
【摘要】:1ThispartofIEC61779specifiesrequirementsforgroupII(asdefinedinpart1)portable,transportableandfixedapparatusforthedetectionandmeasurementofcombustiblegasorvapourconcentrationswithair.Theapparatus,orpartsthereof,maybeinstalledorusedinpotentiallyexplosiveatmospheres,otherthanminessusceptibletofiredamp(i.e.groupI).Therequirementsandtestmethodsapplicabletotheapparatuscoveredbythisstandardarespecifiedinpart1.2Thisstandardisrestrictedtoapparatusintendedforthedetectionandmeasurementofvolumeratiosofcombustiblegasorvapourinairinvolumefractionsfrom0%to100%.NOTE1-Apparatuscoveredbythisstandardwillnormallybeintendedtooperateinvolumeratiosgreaterthan100%LEL.NOTE2-Althoughapparatusofthetypescoveredbythisstandardmaybesuitablefordetectingawiderangeofcombustiblegases,particulargases(e.g.methaneorpropane)arespecifiedinpart1asthecomponentsofthetestgasesforthepurposeofpracticalconvenience.Theperformancerequirementsspecifiedinthisstandardshouldthereforebeconsideredwithcautionwhentheapparatusisusedtodetectothercombustiblegases,assomeparameters-suchastimeofresponse-willbemodified.
【中国标准分类号】:N56
【国际标准分类号】:13_320
【页数】:7P;A4
【正文语种】:英语