BS 957-2008 塞规规范

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【英文标准名称】:Explosiveatmospheres-Gasdetectors-Performancerequirementsofopenpathdetectorsforflammablegases
【原文标准名称】:易爆性环境.瓦斯探测器.易燃性气体用开路式探测器的性能要求
【标准号】:BSEN60079-29-4-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-07-31
【实施或试行日期】:2010-07-31
【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】:吸收;分析仪;燃烧气体;定义;检测;检波器(回路);电气器具;电气设备;电气工程;电驱动装置;防爆;爆炸安全;爆炸性环境;防火安全;可燃性环境;易燃材料;气体浓度;气体检测器;气体测量仪器;气体混合物;测量;测量仪器;测量技术;工作性能;潜在爆炸物;性能;安全工程;安全要求;光谱的;火焰表面传播;试验设备;试验
【英文主题词】:Absorption;Analyzers;Burninggases;Definitions;Detection;Detectors(circuits);Electricappliances;Electricalappliances;Electricalengineering;Electrically-operateddevices;Explosionprotection;Explosionsecurity;Explosiveatmospheres;Firesafety;Flammableatmospheres;Flammablematerials;Gasconcentrations;Gasdetectors;Gasmeasuringinstruments;Gasmixtures;Measurement;Measuringinstruments;Measuringtechniques;Performanceinservice;Potentiallyexplosivematerials;Properties;Safetyengineering;Safetyrequirements;Spectral;Surfacespreadofflame;Testequipment;Testing
【摘要】:ThispartofEN60079-29specifiesperformancerequirementsofequipmentforthedetectionandmeasuringofflammablegasesorvapoursinambientairbymeasuringthespectralabsorptionbythegasesorvapoursoverextendedopticalpaths,rangingtypicallyfromonemetretoafewkilometres.SuchequipmentmeasurestheintegralconcentrationoftheabsorbinggasovertheopticalpathinunitssuchasLFLmetreforflammablegases.NOTE1Actualvaluesofconcentrationcanbededucedonlywhereitcanbeestablishedthattheconcentrationisuniformovertheopticalpath,forexampleinveryshortopticalpaths(＜100mm).Insuchcases,theequipmentiswithinthescopeofEN60079-29-1.NOTE2Thisstandardisbaseduponpresentabsorptiontechniquesusinginfraredradiation.Othertechniquesandapplicationsmayrequireadditionaltestconsiderations(e.g.pressuretest).Equipmentfallingwithinthescopeofthisstandardisclassifiedbythefollowingtypes:Type1:anopticaltransmitterandreceiver,locatedateitherendofapaththroughtheatmospheretobemonitored.Type2:anopticaltransceiver(i.e.combinedtransmitterandreceiver)andasuitablereflector,whichmaybeatopographicfeatureoraretroreflector,locatedateitherendofapaththroughtheatmospheretobemonitored.Thisstandardisalsoapplicablewhenanequipmentmanufacturermakesanyclaimsregardinganyspecialfeaturesofconstructionorsuperiorperformancethatexceedtheminimumrequirementsofthisstandard.Allsuchclaimsshallbeverifiedandthetestproceduresshouldbeextendedorsupplemented,wherenecessary,toverifytheclaimedperformance.Theadditionaltestsshallbeagreedbetweenthemanufacturerandthetestlaboratoryandidentifiedanddescribedinthetestreport.Thisstandarddoesnotapplytoanyoffollowing:a)equipmentintendedtoproviderangeresolutionofgasconcentration(e.g.Lightdirectionandranging(LIDAR));b)equipmentconsistingofapassiveopticalreceiverwithoutadedicatedopticalsource;c)equipmentintendedtomeasurethelocalvolumetricconcentrationofgas(pointsensors);d)equipmentintendedforthedetectionofdustsormistsinair;e)equipmentforcrossstackmonitoring;f)equipmentintendedforthedetectionofexplosives;andg)equipmentintendedonlyfortheidentificationofindividualgasorvapourcomponents,(e.g.Fouriertransforminfraredspectroscopy(FTIR)).Thisstandardisapplicabletoequipmentwhichisintendedforuseinhazardousornonhazardousareas,orboth.Equipmentforuseinhazardousareasisalsorequiredtohaveexplosionprotection(see4.1.1).Thisstandardappliestoportable,transportableandfixedequipmentintendedforcommercialandindustrialapplications.
【中国标准分类号】:C81;N56
【国际标准分类号】:13_320;29_260_20
【页数】:40P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforResistancetoDelaminationoftheSecondaryBackingofPileYarnFloorCovering
【原文标准名称】:绒头纱线地板覆盖物的第二层背衬耐脱层性的标准试验方法
【标准号】:ASTMD3936-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:铺地织物;试验方法;地板覆盖物;耐力;地毯;绒头地毯;背衬
【英文主题词】:backing;carpets;pilecarpets;resistance;textilefloorcoverings;textilefloorcovering;floorcoverings;testmethods
【摘要】:
【中国标准分类号】:W56
【国际标准分类号】:59_080_60
【页数】:4P;A4
【正文语种】:英语