【英文标准名称】:Gasmeters.Specificationfordiaphragmmetersof6cubicmetres(or212cubicfeet)perhourratingforworkingpressuresupto50mbar
【原文标准名称】:燃气表.第3部分:工作压力达50mbar额定值6平方米(或212立方英尺)/小时膜片式燃气表规范
【标准号】:BS4161Pt.3-1977
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【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】:
【国际标准分类号】:
【页数】:
【正文语种】:


【英文标准名称】:StandardTestMethodforPourPointofPetroleumProducts(RotationalMethod)
【原文标准名称】:石油产品倾点的标准测试方法(旋转法)
【标准号】:ASTMD5985-2002
【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(ASTM)
【起草单位】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:petroleumproducts;pourpoint;
【摘要】:Thepourpointofapetroleumproductisanindexofthelowesttemperatureofitsutilityforcertainapplications.Flowcharacteristics,suchaspourpoint,canbecriticalforthecorrectoperationoflubricatingsystems,fuelsystems,andpipelineoperations.Petroleumblendingoperationsrequireprecisemeasurementofthepourpoint.Thistestmethodcandeterminethetemperatureofthetestspecimenwitharesolutionof0.1x00B0;Catwhicheithercrystalshaveformedorviscosityincreasessufficientlytoimpedemovementofthepetroleumproduct.ThistestmethodyieldsapourpointinaformatsimilartoTestMethodD97/IP15whenthe3x00B0;Cintervalresultsarereported.Note28212;SincesomeusersmaywishtoreporttheirresultsinaformatsimilartoTestMethodD97(in3x00B0;Cintervals)theprecisionswerederivedforthetemperaturesroundedtothe3x00B0;Cintervals.ForstatementsonbiasrelativetoTestMethodD97,see13.3.ThistestmethodhasbetterrepeatabilityandcomparablereproducibilityrelativetoTestMethodD97asmeasuredinthe1992interlaboratoryprogram.51.1Thistestmethodcoversthedeterminationofpourpointofpetroleumproductsbyanautomaticinstrumentthatcontinuouslyrotatesthetestspecimenagainstasuspendeddetectiondeviceduringcoolingofthetestspecimen.1.2Thistestmethodisdesignedtocovertherangeoftemperaturesfrom-57to+51176;C;however,therangeoftemperaturesincludedinthe1992interlaboratoryprogramonlycoveredthetemperaturerangeof-39to+6176;C(see13.4).1.3Thistestmethoddeterminestheno-flowpointofpetroleumproductsbydetectionofthecrystalstructureorviscosityincrease,orboth,inthesamplethatissufficienttoimpedeflowofthespecimen.1.4Thistestmethodisnotintendedforusewithcrudeoils.Note18212;Theapplicabilityofthistestmethodonresidualfuelsampleshasnotbeenverified.Forfurtherinformationonapplicability,referto.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:5P.;A4
【正文语种】: