【英文标准名称】:StandardTestMethodforVaporPressureofLiquefiedPetroleumGases(LPG)(ExpansionMethod)
【原文标准名称】:液化石油气(LPG)蒸汽压力用标准试验方法(膨胀方法)
【标准号】:ASTMD6897-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D02.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:液化石油气;蒸汽压力;蒸汽压力(VPx)-石油产品;膨胀法;LPG(液化石油气)
【英文主题词】:expansionmethod;liquefiedpetroleumgas;vaporpressure;Vaporpressure(VPx)--petroleumproducts;Expansionmethod;LPG(liquefiedpetroleumgases)
【摘要】:Informationonthevaporpressuresofliquefiedpetroleumgasispertinenttoselectionofproperlydesignedstoragevessels,shippingcontainers,andcustomerutilizationequipmenttoensuresafehandlingoftheseproducts.Determinationofthevaporpressureofliquefiedpetroleumgasisimportantforsafetyreasonstoensurethatthemaximumoperatingdesignpressuresofstorage,handling,andfuelsystemswillnotbeexceededundernormaloperatingtemperatureconditions.Forliquefiedpetroleumgases,vaporpressurecanbeconsideredasemi-quantitativemeasureoftheamountofthemostvolatilematerialpresentintheproduct.Thistestmethodusesasmallsamplevolumeandexcludesanymanualhandlingofameasuringchamberunderhighpressure.1.1Thistestmethodcoverstheuseofautomaticvaporpressureinstrumentstodeterminethevaporpressureofliquefiedpetroleumgasproductsatatemperatureof37.8x00B0;C,vaportoliquidratioof0.5:1,andpressuresfrom200to1550kPaonasamplevolumeof3.33mL.1.2Thistestmethodisapplicabletothedeterminationofvaporpressuresofliquefiedpetroleumgasproductsattemperaturesfrom37.8to70x00B0;C,vaportoliquidratiosof0.1:1to4:1,andpressuresupto3500kPa;however,theprecisionofthetestmethod(seeSection15)hasonlybeendeterminedforavaportoliquidratioof0.5:1,atatemperatureof37.8x00B0;C,andapressurerangefrom300to1500kPa.Note18212;ThistestmethodisnotintendedtodeterminethetruevaporpressureofLPGsamples,butratherdetermineandreportthevaporpressureofLPGatthe37.8x00B0;Ctemperatureand0.5:1vaportoliquidratioastheTestMethodD1267method.Note28212;Thistestmethodisnotatruevaporpressuremethodandwillnotmeasurethefullcontributionfromanydissolvedgasessuchasnitrogenorheliumiftheyarepresent.Thecontributionoflightgasestothemeasuredvaporpressureishighlydependentonthetesttemperature,typeofgas,andV/Lratioofthetest.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeAppendixX2.
【中国标准分类号】:E46
【国际标准分类号】:75_160_30
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Ferritecores-Dimensions-Part2:Pot-coresforuseintelecommunications,powersupply,andfilterapplications
【原文标准名称】:铁氧体磁芯.尺寸.第2部分:通信、电源和过滤器设施中应用的罐形磁心
【标准号】:IEC62317-2-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC51
【标准类型】:()
【标准水平】:()
【中文主题词】:筒管(纺织);尺寸;电力系统;电气工程;铁氧体磁心;铁电材料;铁磁的;过滤器;极限(数学);电磁元件;氧化物;罐形磁心;可置换性;电信网;电信
【英文主题词】:Bobbins;Dimensions;Electricpowersystems;Electricalengineering;Ferritcores;Ferroelectricmaterials;Ferromagnetic;Filters;Limits(mathematics);Magneticcomponents;Oxides;Potcores;Replaceability;Telecommunicationnetworks;Telecommunications
【摘要】:ThispartofIEC62317specifiesthedimensionsthatareofimportanceformechanicalinterchangeabilityforapreferredrangeofpot-coresmadeofferrite,andthedimensionallimitsforcoilformerstobeusedwiththem.Theselectionofcoresizesforthisstandardisbasedonthephilosophyofincludingthosesizeswhichareindustrialstandards,eitherbyinclusioninanationalstandard,orbybroadbaseduseinindustry.SeeIEC62317-1formoredetailconcerningthephilosophyofselectingcoresizestobeincluded.ThegeneralconsiderationsuponwhichthedesignofthisrangeofcoresisbasedaregiveninAnnexA.
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:30P;A4
【正文语种】:英语