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NF F11-051-1990 铁路车辆.O形密封圈的选择.标识、尺寸和公差

作者:标准资料网 时间:2024-05-03 18:52:31  浏览:9026   来源:标准资料网
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【英文标准名称】:Railwayrollingstock.SelectionofOrings.Designation,dimensionsandtolerances.
【原文标准名称】:铁路车辆.O形密封圈的选择.标识、尺寸和公差
【标准号】:NFF11-051-1990
【标准状态】:现行
【国别】:法国
【发布日期】:1990-06-01
【实施或试行日期】:1990-06-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:S32
【国际标准分类号】:45_040
【页数】:9P;A4
【正文语种】:其他


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【英文标准名称】:Coaxialcables-Sectionalspecificationforcablesusedincableddistributionnetworks-Indoordropcablesforsystemsoperatingat5MHz-1000MHz
【原文标准名称】:同轴电缆.电缆配电网用电缆的分规范.在5MHz~1000MHz频率下运行的系统用室内引入电缆
【标准号】:BSEN50117-2-1+A1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-07-11
【实施或试行日期】:2005-07-11
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆分布系统;电缆网;电缆;同轴;同轴电缆;兼容性;可混用性;连接器的连接件;定义;交付;设计;电气工程;电学测量;电性能;电性质和电现象;电气试验;环境条件;环境效应;家用(安装)设备;识别;安装电缆;作标记;材料;测量技术;机械性能;性能;质量评定程序;质量保证;分规范;信号传输;规范(验收);储存;火焰表面传播;测试
【英文主题词】:Cabledistributionsystems;Cablednetworks;Cables;Coaxial;Coaxialcables;Compatibility;Connectoredjoints;Definition;Definitions;Delivery;Design;Electricalengineering;Electricalmeasurement;Electricalproperties;Electricalpropertiesandphenomena;Electricaltesting;Environmentalcondition;Environmentaleffect;Houseinstallations;Identification;Installationcables;Marking;Materials;Measuringtechniques;Mechanicalproperties;Properties;Qualityassessmentprocedures;Qualityassurance;Sectionalspecification;Signaltransmission;Specification(approval);Storage;Surfacespreadofflame;Testing
【摘要】:ThissectionalspecificationrelatestoEN50117-1:Genericspecificationforcoaxialcables,andshouldbereadinconjunctionwiththisgenericstandard.Thisspecificationappliestoindoordropcablesforuseincableddistributionsystemsoperatingattemperaturebetween–40°Cand+70°C1)andatfrequenciesbetween5MHzand1000MHzandcomplyingwiththerequirementsofEN50083.ThepurposeofthisEuropeanStandardistospecifytheapplicabletestmethodsandrequirementsfortheelectrical,mechanical,environmentalandfireperformanceofthecables.
【中国标准分类号】:
【国际标准分类号】:33_120_10
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforDeterminationofVolatileOrganicCompounds(ExcludingFormaldehyde)EmissionsfromWood-BasedPanelsUsingSmallEnvironmentalChambersUnderDefinedTestConditions
【原文标准名称】:在限定的试验条件下使用小型环境室测定由木基板散发的挥发性有机化合物(甲醛除外)的标准操作规程
【标准号】:ASTMD6330-1998(2003)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D22.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:散发因素;小型环境试验室;标准动态室试验条件;木基板;挥发有机化合物;化学分析
【英文主题词】:chemicalanalysis;emissionfactors;smallenvironmentaltestchamber;standarddynamicchambertestconditions;volatileorganiccompounds;wood-basedpanels;
【摘要】:TheeffectsofVOCsourcesontheindoorairqualityinbuildingshavenotbeenwellestablished.Onebasicrequirementthathasemergedfromindoorairqualitystudiesistheneedforwell-characterizedtestdataontheemissionfactorsofVOCsfrombuildingmaterials.Standardtestmethodandprocedurearearequirementforthecomparisonofemissionfactordatafromdifferentproducts.ThispracticedescribesaprocedureforusingasmallenvironmentaltestchambertodeterminetheemissionfactorsofVOCsfromwood-basedpanelsoveraspecifiedperiodoftime.Apre-screeninganalysisprocedureisalsoprovidedtoidentifytheVOCsemittedfromtheproducts,todeterminetheappropriateGC/MSorGC/FIDanalyticalprocedure,andtoestimaterequiredsamplingvolumeforthesubsequentenvironmentalchambertesting.TestresultsobtainedusingthispracticeprovideabasisforcomparingtheVOCemissioncharacteristicsofdifferentwood-basedpanelproducts.TheemissiondatacanbeusedtoinformmanufacturersoftheVOCemissionsfromtheirproducts.ThedatacanalsobeusedtoidentifybuildingmaterialswithreducedVOCemissionsoverthetimeintervalofthetest.Whileemissionfactorsdeterminedbyusingthispracticecanbeusedtocomparedifferentproducts,theconcentrationsmeasuredinthechambershallnotbeconsideredastheresultantconcentrationsinanactualindoorenvironment.1.1Thepracticemeasuresthevolatileorganiccompounds(VOC),excludingformaldehyde,emittedfrommanufacturedwood-basedpanels.Apre-screeninganalysisisusedtoidentifytheVOCsemittedfromthepanel.Emissionfactors(thatis,emissionratesperunitsurfacearea)fortheVOCsofinterestarethendeterminedbymeasuringtheconcentrationsinasmallenvironmentaltestchambercontainingaspecimen.Thetestchamberisventilatedataconstantairchangerateunderthestandardenvironmentalconditions.Forformaldehydedetermination,seeTestMethodD6007.1.2ThispracticedescribesatestmethodthatisspecifictothemeasurementofVOCemissionsfromnewlymanufacturedindividualwood-basedpanels,suchasparticleboard,plywood,andorientedstrandboard(OSB),forthepurposeofcomparingtheemissioncharacteristicsofdifferentproductsunderthestandardtestcondition.Forgeneralguidanceonconductingsmallenvironmentalchambertests,seeGuideD5116.1.3VOCconcentrationsintheenvironmentaltestchamberaredeterminedbyadsorptiononanappropriatesingleadsorbenttubeormulti-adsorbenttube,followedbythermaldesorptionandcombinedgaschromatograph/massspectrometry(GC/MS)orgaschromatograph/flameionizationdetection(GC/FID).TheairsamplingprocedureandtheanalyticalmethodrecommendedinthispracticearegenerallyvalidfortheidentificationandquantificationofVOCswithsaturationvaporpressurebetween500and0.01kPaat25176;C,dependingontheselectionofadsorbent(s).Note18212;VOCsbeingcapturedbyanadsorbenttubedependontheadsorbent(s)andsamplingprocedureselected(seePracticeD6196).Theusershouldhaveathoroughunderstandingofthelimitationsofeachadsorbentused.1.4Theemissionfactorsdeterminedusingtheaboveproceduredescribetheemissioncharacteristicsofthespecimenunderthestandardtestcondition.Thesedatacanbeuseddirectlytocomparetheemissioncharacteristicsofdifferentproductsandtoestimatetheemissionratesuptoonemonthaftertheproduction.Theyshallnotbeusedtopredicttheemissionratesoverlongerperiodsoftime(thatis,morethanonemonth)orunderdifferentenvironmentalconditions.1.5Emissiondatafromchambertestscanbeusedforpredictingtheimpactofwood-basedpanelsontheVOCconcentrationsinbuildingsbyusinganappropriateindoorairqualitymodel,whichisbeyondthesco......
【中国标准分类号】:B70
【国际标准分类号】:13_040_99;71_100_50;79_060_01
【页数】:10P.;A4
【正文语种】:



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