IEC/TR 60721-4-4 Edition 1.1-2003 环境条件分类.第4-4部分:IEC60721-3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.在无气候防护场所固定使用
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【英文标准名称】:Classificationofenvironmentalconditions-Part4-4:GuidanceforthecorrelationandtransformationofenvironmentalconditionclassesofIEC60721-3totheenvironmentaltestsofIEC60068;Stationaryuseatnon-weatherprotectedlocations
【原文标准名称】:环境条件分类.第4-4部分:IEC60721-3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.在无气候防护场所固定使用
【标准号】:IEC/TR60721-4-4Edition1.1-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC104
【标准类型】:()
【标准水平】:()
【中文主题词】:环境;环境试验;气候;环境影响;分类系统;试验条件;环境条件;分类;试验;电气工程
【英文主题词】:electricalengineering;classificationsystems;testconditions;environment;trials;environmentaleffects;environmentalconditions;climate;classification;environmentaltesting;tests
【摘要】:ThispartofIEC60721isatechnicalreportdealingwiththecorrelationandtransformationoftheconditionsgiveninIEC60721-3-4totheenvironmentaltestsdefinedinIEC60068-2.Anenvironmentmayconsistofanumberofenvironmentalconditionssuchasdynamic,climaticandbiologicalandothereffectsduetochemicallyandmechanicallyactivesubstances.Inthisreport,onlydynamicandclimaticconditionshavebeenconsidered.Thepurposeofthistechnicalreportistoprovidethespecificationwriterwithguidancetogetherwithasetofeasy-to-usetableswhichcorrelateandtransformtheseconditions.
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:110P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringHumiditywithaPsychrometer(theMeasurementofWet-andDry-BulbTemperatures)
【原文标准名称】:使用干湿球湿度计测定湿度的标准试验方法(测定干球和湿球的温度)
【标准号】:ASTME337-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D22.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aspiration;humidity;psychrometer;psychrometrictable;temperature;vaporpressure;ventilation;wet-bulbtemperature
【摘要】:1.1General1.1.1Thistestmethodcoversthedeterminationofthehumidityofatmosphericairbymeansofwet-anddry-bulbtemperaturereadings.1.1.2Thistestmethodisapplicableformeteorologicalmeasurementsattheearth''ssurface,forthepurposeofthetestingofmaterials,andforthedeterminationoftherelativehumidityofmoststandardatmospheresandtestatmospheres.1.1.3Thistestmethodisalsoapplicablewhenthetemperatureofthewetbulbonlyisrequired.Inthiscase,theinstrumentcomprisesawet-bulbthermometeronly.1.1.4Relativehumidity(RH)doesnotdenoteaunit.UncertaintiesintherelativehumidityareexpressedintheformRHrh%,whichmeansthattherelativehumidityisexpectedtolieintherange(RHrh)%to(RH+rh)%,whereRHistheobservedrelativehumidity.Alluncertaintiesareatthe95%confidencelevel.1.2MethodA-PsychrometerVentilatedbyAspiration:1.2.1Thismethodincorporatesthepsychrometerventilatedbyaspiration.Theaspiratedpsychrometerismoreaccuratethanthesling(whirling)psychrometer(seeMethodB),anditoffersadvantagesinregardtothespacewhichitrequires,thepossibilityofusingalternativetypesofthermometers(forexample,electrical),easiershieldingofthermometerbulbsfromextraneousradiation,accidentalbreakage,andconvenience.1.2.2Thismethodisapplicablewithintheambienttemperaturerange5to80C,wet-bulbtemperaturesnotlowerthan1C,andrestrictedtoambientpressuresnotdifferingfromstandardatmosphericpressurebymorethan30%.1.3MethodB-PsychrometerVentilatedbyWhirling(SlingPsychrometer):1.3.1Thismethodincorporatesthepsychrometerventilatedbywhirling(slingpsychrometer).1.3.2Thismethodisapplicablewithintheambienttemperaturerange5to50C,wet-bulbtemperaturesnotlowerthan1Candrestrictedtoambientpressuresnotdifferingfromstandardatmosphericpressurebymorethan30%.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Formorespecificsafetyprecautionarystatements,see8.1and15.1.)【英文标准名称】:StandardSpecificationforPolystyreneandRubber-ModifiedPolystyreneMoldingandExtrusionMaterials(PS)
【原文标准名称】:聚苯乙烯和橡胶改良的聚苯乙烯模压和挤压材料(PS)的标准规范
【标准号】:ASTMD4549-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【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】:挤压;塑料;聚苯乙烯
【英文主题词】:plastics;extruding;polystyrene
【摘要】:
【中国标准分类号】:G32
【国际标准分类号】:83_080_10
【页数】:5P;A4
【正文语种】:英语