【英文标准名称】:Totallyenclosedfan-cooledthree-phaseinductionmotorswithsquirrel-cage,typeIMB5,IMB10,IMB14,withrollingbearings;relationshipframesizes-outputratingsfortypeofprotectionincreasedsafety"e"
【原文标准名称】:带滚动轴承的IMB5、IMB10、IMB14型全密封风扇冷却鼠笼式三相感应电机.相关框架规格－提高防护安全性"E"型的额定输出功率
【标准号】:DIN42677-2-1983
【标准状态】:作废
【国别】:德国
【发布日期】:1983-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:性能;鼠笼式电动机;异步电动机;三相电动机;安全工程;电动机;滚动轴承;冷却;额定值;尺寸;多相交流电动机;表面;防护程度;电气工程;交流电动机
【英文主题词】:Alternating-currentmotors;Asynchronous;Asynchronousmotors;Bearings;Cooling;Coordination;Dimensions;Electricmotors;Electricalengineering;Explosionprotection;Explosion-proof;Ignition;IPenclosure;Motors;Performance;Ratings;Rollingbearings;Rotationalspeeds;Safetyengineering;Squirrel-cagemotors;Surfaces;Terms;Three-phasecurrent;Three-phasemotors;Typeofprotection;Types
【摘要】:
【中国标准分类号】:K22
【国际标准分类号】:29_160_30
【页数】:3P.;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforDeterminationofNon-MethaneOrganicCompounds(NMOC)inAmbientAirUsingCryogenicPreconcentrationandDirectFlameIonizationDetectionMethod(Metric)
【原文标准名称】:用低温预先富集和直接火焰离子检测法测定环境空气中非甲烷有机化合物(NMOC)的标准试验方法(米制单位)
【标准号】:ASTMD5953M-1996(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ambientatmospheres;analysis;atmospheres;canistersampling;cryogenicsampling;flameionizationdetection;indooratmospheres;non-methanehydrocarbons;sampling;workplaceatmospheres;Ambientair/atmosphericanalysis;Canistersamplingmethod
【摘要】:ManyindustrialprocessesrequiredeterminationofNMOCintheatmosphere.AccuratemeasurementsofambientconcentrationsofNMOCareimportantforthecontrolofphotochemicalsmogbecausetheseorganiccompoundsareprimaryprecursorsofatmosphericozoneandotheroxidants(7,8).TheNMOCconcentrationstypicallyfoundaturbansitesmayrangeupto1to3ppmCorhigher.Inordertodeterminetransportofprecursorsintoanarea,measurementofNMOCupwindoftheareamaybenecessary.RuralNMOCconcentrationsoriginatingfromareasfreefromNMOCsourcesarelikelytobelessthanafewtenthsof1ppmC.Conventionaltestmethodsthatdependongaschromatographyandqualitativeandquantitativespeciesevaluationareexcessivelydifficultandexpensivetooperateandmaintainwhenspeciatedmeasurementsarenotneeded.Thetestmethoddescribedhereinvolvesasimple,cryogenicpreconcentrationprocedurewithsubsequentdirectdetectionwiththeFID.ThetestmethodissensitiveandprovidesaccuratemeasurementsofambienttotalNMOCconcentrationswherespeciateddataarenotrequired.Anapplicationofthetestmethodisthemonitoringofthecleanlinessofcanisters.Anotheruseofthetestmethodisthescreeningofcanistersamplespriortoanalysis.Collectionofambientairsamplesinpressurizedcanistersprovidesthefollowingadvantages:Convenientintegrationofambientsamplesoveraspecifictimeperiod,Capabilityofremotesamplingwithsubsequentcentrallaboratoryanalysis,Abilitytoshipandstoresamples,ifnecessary,Unattendedsamplecollection,Analysisofsamplesfrommultiplesiteswithoneanalyticalsystem,Collectionofreplicatesamplesforassessmentofmeasurementprecision,andSpecifichydrocarbonanalysiscanbeperformedwiththesamesamplesystem.1.1Thistestmethodcoversaprocedureforsamplinganddeterminingconcentrationsofnon-methaneorganiccompounds(NMOC)inambient,indoor,orworkplaceatmospheres.1.2Thetestmethoddescribesthecollectionofcumulativesamplesinpassivatedstainlesssteelcanistersandsubsequentlaboratoryanalysis.1.2.1Thistestmethoddescribesaprocedureforsamplingincanistersatfinalpressuresaboveatmosphericpressure(referredtoaspressurizedsampling).1.3ThistestmethodemploysacryogenictrappingprocedureforconcentrationoftheNMOCpriortoanalysis.1.4ThistestmethoddescribesthedeterminationoftheNMOCbythesimpleflameionizationdetector(FID),withoutthegaschromatographiccolumnsandcomplexproceduresnecessaryforspeciesseparation.1.5Therangeofthistestmethodisfrom20to10000ppbC(1,2).Seeforproceduresforloweringtherange.1.6Thetestmethodmayyieldlessaccurateresultsforsomehalogenatedoroxygenatedhydrocarbonsemittedfromnearbysourcesofindustrialairpollutants.Thisisespeciallytrueiftherearehighconcentrationsofchlorocarbonsorchlorofluorocarbonspresent.1.7ThevaluesstatedinSIunitsareregardedasstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:71_040_50
【页数】:13P.;A4
【正文语种】:英语