ASTM D 3908-1988 容量真空法测定以氧化铝为载体的铂催化剂氢化学吸附性的试验方法
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【英文标准名称】:TestMethodforHydrogenChemisorptiononSupportedPlatinumonAluminaCatalystsbyVolumetricVacuumMethod
【原文标准名称】:容量真空法测定以氧化铝为载体的铂催化剂氢化学吸附性的试验方法
【标准号】:ASTMD3908-1988
【标准状态】:作废
【国别】:美国
【发布日期】:1988
【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】:铂;氢;铝;试验;催化剂;化学吸附
【英文主题词】:testing;chemisorption;hydrogen;catalysts;aluminium;platinum
【摘要】:
【中国标准分类号】:G74
【国际标准分类号】:71_040_30
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:ULStandardforSafetyGasandVaporDetectorsandSensorsCOMMENTSDUE:FEBRUARY19,2006
【原文标准名称】:气体和蒸气探测器和传感器UL安全性标准.评议提交截止日期:2006年2月19日
【标准号】:UL2075BULLETIN-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-01-19
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:TheserequirementscovertoxicandcombustiblegasandvapordetectorsandsensorsintendedtobeportableoremployedinindoororoutdoorlocationsinaccordancewiththeNationalElectricalCode,NFPA70.Agasdetectorand/orsensorand/orvapordetector,ascoveredbytheserequirements,consistsofanassemblyofelectricalcomponentscoupledwithasensingmeansinsideachamber,orbyseparatecomponentstodetecttoxicand/orcombustiblegasesorvapors.Thedetectorincludesprovisionfortheconnectiontoasourceofpowerandsignalingcircuits.Theserequirementscoverthefollowingtypesofdetectors:a)Detectorsintendedformonitoringtheenvironmentanddetectorsintendedforopenareaprotectionandforconnectiontoacompatiblepowersupplyorcontrolunitforoperationaspartofgasdetectionoremergencysignalingsystems;b)Detectorsintendedsolelyforcontrolofventilationorshutoffdevicessuchasfansorcontrolvalves;c)Detectorsintendedforboththeaboveapplications;d)Sensorsandsensingcircuitsintendedforusewithoringasdetectors,alarmsorgasdetectioncircuitswithinfuelcellsystems;e)Portablegasdetectors;f)Multi-gasgasdetectors;g)Multi-gassensorsandh)Equipmentintendedforuseinhazardouslocations.Note,theequipmentmustcomplywiththeapplicablehazardouslocationrequirementspriortoevaluationtoUL2075.1.3Theserequirementsalsocoverallremoteaccessoriesthatareintendedtobeconnectedtoagasorvapordetectorand/orsensor.1.4Thisstandarddoesnotcoverthefollowing:a)ControlunitstowhichthedetectorsareintendedtobeconnectedthatarecoveredbytheStandardforControlUnitsforFire-ProtectiveSignalingSystems,UL864;b)ControlunitstowhichthedetectorsareintendedtobeconnectedthatarecoveredbytheStandardforGeneralPurposeSignalingDevicesandSystems,UL2017;c)Self-containedsingleandmultiplestationcarbonmonoxidealarmsorresidentialcombustiblegasdetectors,notintendedforconnectiontoasystemcontrolunit,thatarecoveredbytheStandardforSingleandMultipleStationCarbonMonoxideAlarms,UL2034orResidentialGasDetectors,UL1484.1.5Usersoftheserequirementswilladditionallyneedtoensurethatinfluencingfactorsnotaddressedinthisstandardfortheendproductinstallation,suchasmechanicalmovement,fieldplacementofconductivematerial,andproductdamage,willnotaffectthesystemforinsulationcoordinationorperformanceoperation.Examplesarethedeformationoftheenclosure,movementofthefittingsforconduitorarmoredcable,ortheimproperinstallationoffieldwiring.
【中国标准分类号】:N56
【国际标准分类号】:13_320
【页数】:
【正文语种】:英语