ASTM E337-2002(2007) 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)
作者:标准资料网 时间:2024-05-19 01:16:59 浏览:9683
来源:标准资料网
下载地址: 点击此处下载
【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.)
【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.)
下载地址: 点击此处下载
