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【英文标准名称】:StandardTestMethodforPyridineBasesinCresylicAcidbyDirectTitration
【原文标准名称】:直接滴定法测定甲苯基酸中吡淀碱的标准试验方法
【标准号】:ASTMD4471-2000(2004)
【标准状态】:现行
【国别】:
【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(US-ASTM)
【起草单位】:D16.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:吡啶;滴定法;甲苯基酸;芳烃;试验;含量测定;芳族化合物;涂料;溶剂
【英文主题词】:cresols;cresylicacids;nitrogenbases;phenol;pyridinebases;taracids
【摘要】:Thepyridinebasecontentofcresylicacidsisimportantincertainapplications.Thistestmethodmaybeusedasatoolforqualitycontrolandspecificationpurposesbyproducersandusers.1.1Thistestmethodcoversthedeterminationofpyridineandotherbasicnitrogenimpuritiesincrudeandrefinedcresylicacidsstreams,includingmixtures.1.2Thistestmethodisapplicableforpyridinebaselevelsof0.001%to0.5%.1.3Thefollowingappliestoallspecifiedlimitsinthisstandard:Forpurposesofdeterminingconformancewiththisstandard,anobservedvalueoracalculatedvalueshallberoundedoff"tothenearestunit"inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:G17
【国际标准分类号】:71_080_30
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:IEEEStandardTestMethodsforSurgeProtectorsUsedinLow-VoltageData,Communications,andSignalingCircuits
【原文标准名称】:低压数据、通信和发信号电路用电涌保护器的IEEE标准试验方法
【标准号】:IEEEC62.36-2000(R2006)
【标准状态】:现行
【国别】:美国
【发布日期】:
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thisstandardappliestosurgeprotectorsforapplicationonmulticonductorbalancedorunbalanceddata,communications,andsignalingcircuitswithvoltagesequaltoorlessthan1000Vrms,or1200Vdc.Thesesurgeprotectorsaredesignedtolimitvoltagesurges,currentsurges,orboth.Thisstandarddescribesthemethodsoftestingandcriteriafordeterminingtheendoflifeofelectricalsurgeprotectorsusedinlow-voltagedata,communications,andsignalingcircuits.Thesurgeprotectorscoveredaremultiple-componentseriesorparallelcombinationsoflinearornonlinearelements,packagedforthepurposeoflimitingvoltage,current,orboth.Thisstandardisnotintendedtocoverpackagedsinglegastube,airgap,varistor,oravalanchejunctionsurge-protectivedevices,whichareincludedinIEEEStdC62.31-1987,1IEEEStdC62.32-1981,IEEEStdC62.33-1982,andIEEEStdC62.35-1987,respectively.Specificallyexcludedfromthisstandardaretestmethodsforlow-voltagepowercircuitapplications.Forprotectionofwire-linecommunicationfacilitiesunderthespecializedconditionsfoundatpowerstations,consultIEEEStd487-1992.Thetestsinthisstandardareintendedasdesigntests,asdefinedintheIEEEDictionary[B1]2,andprovideameansofcomparisonamongvariousmultiple-componentsurgeprotectors.Thetestcriteriaanddefinitionsofthisstandardprovideacommonengineeringlanguagebeneficialtousersandmanufacturersofmultiple-componentsurgeprotectors.
【中国标准分类号】:K46
【国际标准分类号】:
【页数】:60P.;A4
【正文语种】:英语