IEC/TR 60721-4-3-2001 环境条件分类第43部分:IEC607213的环境条件类别与IEC60068的环境试验的相互关系及转换的指南在气候防护场所固定使用

作者:标准资料网 时间:2024-05-05 20:09:17   浏览:9009   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Classificationofenvironmentalconditions-Part4-3:GuidanceforthecorrelationandtransformationofenvironmentalconditionclassesofIEC60721-3totheenvironmentaltestsofIEC60068;Stationaryuseatweatherprotectedlocations
【原文标准名称】:环境条件分类第43部分:IEC607213的环境条件类别与IEC60068的环境试验的相互关系及转换的指南在气候防护场所固定使用
【标准号】:IEC/TR60721-4-3-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC104
【标准类型】:()
【标准水平】:()
【中文主题词】:分类;分类系统;试验条件;环境条件;气候;环境影响;环境;气候防护系统;环境试验;试验;电气工程
【英文主题词】:Classification;Classificationsystems;Climate;Climaticcondition;Climaticloading;Conversion;Correlation;Degreeofsharpness;Dynamictesting;Electricalengineering;Environment;Environmentalconditions;Environmentaleffects;Environmentaltesting;Guidebooks;Influencefactors;Lifetest;Materialstesting;Physicaltesting;Producttests;Standards;Stationary;Testconditions;Testing;Tests;Transport;Trials;Use;Weather;Weathercondition;Weatherprotectionsystems;Weatherresistant;Weathering;Weatheringresistance;Weatherproof
【摘要】:ThispartisatechnicalreportdealingwiththecorrelationandtransformationoftheconditionsgiveninIEC60721-3-3totheenvironmentaltestsasdefinedinIEC60068-2.
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:45P.;A4
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:Aerospaceseries-Bolts,normalhexagonalhead,coarsetolerancenormalshank,longthread,intitaniumalloy,aluminiumIVDcoated-Classification:1100MPa(atambienttemperature)/425°C
【原文标准名称】:航空航天系列.镀铝IVD钛合金钢长螺纹粗公差标称杆标准六角头螺栓.等级:1100MPa(环境温度)/425℃
【标准号】:BSEN4133-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-05-31
【实施或试行日期】:2009-05-31
【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】:航空航天运输;航空运输;铝;涂覆的;涂层;设计;名称与符号;尺寸规格;紧固件;六角头螺钉;作标记;多语种的;螺钉;航天运输;规范(验收);螺纹;钛合金;公差(测量)
【英文主题词】:Aerospacetransport;Airtransport;Aluminium;Coated;Coatings;Design;Designations;Dimensions;Fasteners;Hexagonheadscrews;Marking;Multilingual;Screws(bolts);Spacetransport;Specification(approval);Threads;Titaniumalloys;Tolerances(measurement)
【摘要】:Thisstandardspecifiesthecharacteristicsofbolts,normalhexagonalhead,coarsetolerancenormalshank,longthread,intitaniumalloy,aluminiumIVDcoated.Classification:1100MPa/425°C
【中国标准分类号】:V20
【国际标准分类号】:49_030_20
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforVolumetricandMassFlowRateMeasurementinaDuctUsingTracerGasDilution
【原文标准名称】:用示踪气体稀释法测量管道中体积和质量流量率的标准试验方法
【标准号】:ASTME2029-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E06.41
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:容积流量测量;流量率;流量率;竖管;示踪法;物流;管道;示踪气体;污染控制;运河;测量体积流量
【英文主题词】:ducts;flowrate;massflow;stacks;volumetricflow;tracergas
【摘要】:Themethodpresentedhereisafieldmethodthatmaybeusedtodeterminemassandvolumeflowratesinductswhereflowconditionsmaybeirregularandnonuniform.Thegasflowingintheductisconsideredtobeanidealgas.Themethodmaybeespeciallyusefulinthoselocationswhereconventionalpitottubeorthermalanemometervelocitymeasurementsaredifficultorinappropriatedueeithertoverylowaverageflowvelocityorthelackofasuitablerunofductupstreamanddownstreamofthemeasurementlocation.Thistestmethodcanproducethevolumetricflowrateatstandardconditionswithouttheneedtodeterminegasstreamcomposition,temperature,andwatervaporcontent.ThistestmethodisusefulfordeterminingmassorvolumetricflowratesinHVACducts,fumehoods,ventstacks,andminetunnels,aswellasinperformingmodelstudiesofpollutioncontroldevices.Thistestmethodisbasedonfirstprinciples(conservationofmass)anddoesnotrequireengineeringassumptions.Thistestmethoddoesnotrequirethemeasurementoftheareaoftheductorstack.Thetestmethoddoesnotrequireflowstraightening.Thetestmethodisindependentofflowconditions,suchasangle,swirl,turbulence,reversals,andhence,doesnotrequireflowstraightening.Thedryvolumetricairflowcanbedeterminedbydryingtheairsampleswithoutmeasuringthewatervaporconcentration.1.1Thistestmethoddescribesthemeasurementofthevolumetricandmassflowrateofagasstreamwithinaduct,stack,pipe,minetunnel,orflueusingatracergasdilutiontechnique.Foreditorialconvenienceallreferencesinthetextwillbetoaduct,butitshouldbeunderstoodthatthiscouldreferequallywelltoastack,pipe,minetunnel,orflue.Thistestmethodislimitedtothoseapplicationswherethegasstreamandthetracergascanbetreatedasidealgasesattheconditionsofthemeasurement.Inthistestmethod,thegasstreamwillbereferredasair,thoughitcouldbeanyothergasthatexhibitsidealgaslawbehavior.1.2Thistestmethodisnotrestrictedtoanyparticulartracergasalthoughexperimentalexperiencehasshownthatcertaingasesareusedmorereadilythanothersassuitabletracergases.Itispreferablethatthetracergasnotbeanaturalcomponentofthegasstream.1.3Useofthistestmethodrequiresaknowledgeoftheprinciplesofgasanalysisandinstrumentation.Correctuseoftheformulaspresentedhererequiresconsistentuseofunits.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection7.
【中国标准分类号】:A42
【国际标准分类号】:13_040_01
【页数】:10P.;A4
【正文语种】: