ANSI/ASTM D4305-1999 低温条件下航空燃料过滤流测试方法(05.02)
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【英文标准名称】:FilterFlowofAviationFuelsatLowTemperature,MethodofTestfor(05.02)
【原文标准名称】:低温条件下航空燃料过滤流测试方法(05.02)
【标准号】:ANSI/ASTMD4305-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:航空燃料;过滤器;流动;低温;石油产品;试验
【英文主题词】:Aviationfuels;Filters;Flows;Lowtemperatures;Petroleumproducts;Testing
【摘要】:Thistestmethodcoversthedeterminationoflowtemperatureflowbehavior,throughascreen-typetestfilter,ofaviationturbinefuels,whichcancontainseparatedsolidsaswax.ProcedureAemploysa26-?mtestfilterandistherecommendedprocedure.Someexistinginstrumentsarefittedwitha42-?mfilter,andProcedureBisretainedtoenabletheircontinueduse.TheuseofProcedureA(26-?mtestfilter)withfuelsthathaveaviscosityofgreaterthan5.0mm/s(cSt)at-20?C,asdeterminedbyTestMethodD445,canaffecttheprecisionandthesimulatedfreezingpointobtainedonsuchfuelsandcangiveahigher(warmer)resultthantheconventionalfreezingpointobtainedbyTestMethodD2386.Note1-Theprincipleofthistestmethodreliesonflowthroughafine-meshtestfilter,and,hence,theresultcanbeaffectedbytheviscosityofthesample.WhenusingProcedureA,ano-flowconditionisreachedwhencrystalsblockthetestfilterortheviscosityexceedsabout14mm/s(cSt);samplewithaviscosityofgreaterthan5mm/s(cSt)at-20?Cmayexceedthe14-mm/s(cSt)thresholdatatemperaturebeforecrystalsareformed.Ifviscosityaffectstheresultbeforecrystalsareformed,thenthereportedvalueoftheno-flowtemperatureofthesamplewillalwaysbewarmerthantheactualfreezingpoint,andthereforefail-safeandanindicatorofpossibleflowanomaliesatlowtemperature.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语
【原文标准名称】:低温条件下航空燃料过滤流测试方法(05.02)
【标准号】:ANSI/ASTMD4305-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:航空燃料;过滤器;流动;低温;石油产品;试验
【英文主题词】:Aviationfuels;Filters;Flows;Lowtemperatures;Petroleumproducts;Testing
【摘要】:Thistestmethodcoversthedeterminationoflowtemperatureflowbehavior,throughascreen-typetestfilter,ofaviationturbinefuels,whichcancontainseparatedsolidsaswax.ProcedureAemploysa26-?mtestfilterandistherecommendedprocedure.Someexistinginstrumentsarefittedwitha42-?mfilter,andProcedureBisretainedtoenabletheircontinueduse.TheuseofProcedureA(26-?mtestfilter)withfuelsthathaveaviscosityofgreaterthan5.0mm/s(cSt)at-20?C,asdeterminedbyTestMethodD445,canaffecttheprecisionandthesimulatedfreezingpointobtainedonsuchfuelsandcangiveahigher(warmer)resultthantheconventionalfreezingpointobtainedbyTestMethodD2386.Note1-Theprincipleofthistestmethodreliesonflowthroughafine-meshtestfilter,and,hence,theresultcanbeaffectedbytheviscosityofthesample.WhenusingProcedureA,ano-flowconditionisreachedwhencrystalsblockthetestfilterortheviscosityexceedsabout14mm/s(cSt);samplewithaviscosityofgreaterthan5mm/s(cSt)at-20?Cmayexceedthe14-mm/s(cSt)thresholdatatemperaturebeforecrystalsareformed.Ifviscosityaffectstheresultbeforecrystalsareformed,thenthereportedvalueoftheno-flowtemperatureofthesamplewillalwaysbewarmerthantheactualfreezingpoint,andthereforefail-safeandanindicatorofpossibleflowanomaliesatlowtemperature.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语
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