BS EN ISO 6975-1997 天然气.延伸分析.气相色谱法

作者:标准资料网 时间:2024-04-29 21:18:33   浏览:8039   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Naturalgas-Extendedanalysis-Gaschromatographicmethod
【原文标准名称】:天然气.延伸分析.气相色谱法
【标准号】:BSENISO6975-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;氩;热值;二氧化碳;化学分析和试验;化学成分;色谱法;定义;密度;含量测定;乙烷;气体分析;气相色谱法;混合气体;氦;烃类;氢;材料试验;数学计算;甲烷;计算方法;天然气;氮;氧;丙烷;验证
【英文主题词】:Analysis;Argon;Calorificvalues;Carbondioxide;Chemicalanalysisandtesting;Chemicalcomposition;Chromatography;Definitions;Density;Determinationofcontent;Ethane;Gasanalysis;Gaschromatography;Gasmixtures;Helium;Hydrocarbons;Hydrogen;Materialstesting;Mathematicalcalculations;Methane;Methodsofcalculation;Naturalgas;Nitrogen;Oxygen;Propane;Verification
【摘要】:ThisInternationalStandarddescribesthespecificationsforthequantitativeanalysisofthefollowingcomponentsofnaturalgas:heliumhydrogenargonoxygennitrogencarbondioxidesaturatedhydrocarbonsfromC1toC5hydrocarbonfractionsfromC6upwardsaromaticcompoundsasbenzeneandtolueneThegas-chromatographicmethodsdeterminethecomponentsinthefollowingranges:oxygen:0,001%(n/n)to0,5%(n/n)helium:0,001%(n/n)to0,5%(n/n)hydrogen:0,001%(n/n)to0,5%(n/n)argon:0,001%(n/n)to0,5%(n/n)nitrogen:0,001%(n/n)to40%(n/n)carbondioxide0,001%(n/n)to40%(n/n)methane:50%(n/n)to100%(n/n)ethane:0,02%(n/n)to15%(n/n)propane:0,001%(n/n)to5%(n/n)higherhydrocarbons:Themethodcanmeasurehydrocarboncomponentsfrom10(n/n)uptotheirmaximumconcentration,whichiscompatiblewiththerequirementthatthegasisfreefromhydrocarboncondensateatanypressureintherange1×10kPato7×10kPa.Thismethodisnotintendedforthedeterminationofoxygencompounds(watervapour,methanol,glycols)orsulfurcompounds.ItisnotpossibletomakeunambiguousidentificationsofhydrocarbonsaboveC6.Evenwhere"spiking"agasmixturewithknowncomponentsshowswheretheyelute,itcannotbestatedwithcertaintythatsuchacomponentistheonlyonewiththatretentiontime.Unidentifiedcomponentsareclassifiedaccordingtothecarbonnumberwhichtheanalysisindicatestobeappropriate.Whilethisisanecessarysimplification,itdoesallowareasonablequantitativevaluetobeobtained.Thismethodisintendedforuseinsituationswherethehexanespluscompositionalbreakdownand/orthecompleteanalysisisdesired.Themethodisnotintendedfordensephasegaseswhosepressureexceedsthecricondebar(criticalcondensationpressure),orforgassamplescontaininganymeasurablehydrocarboncondensate,liquidwaterorprocessfluidsuchasmethanolorglycols(seeISO6570-1andISO10715).GaseswhichhavebeentreatedfortransmissionareunlikelytocontaindetectablelevelsofhydrocarbonsaboveC12.Samplestakenfromnearerthewellhead,beforethegashasreachedgastreatmentplants,maycontainhydrocarbonstoC16orabove.
【中国标准分类号】:E24
【国际标准分类号】:75_060
【页数】:32P.;A4
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:Singlecrystalwafersforsurfaceacousticwave(SAW)deviceapplication-Specificationsandmeasuringmethods
【原文标准名称】:表面声波装置用单晶薄片.规范和测量方法
【标准号】:IEC62276-2005
【标准状态】:作废
【国别】:国际
【发布日期】:2005-05
【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/TC49
【标准类型】:()
【标准水平】:()
【中文主题词】:电子设备及元件;定义;电气工程;测量方法;规范(验收);频率稳定;规范;表面声波;压电;声波;石英晶体;薄片;单晶;压电器件
【英文主题词】:Acousticwaves;Crystallattices;Crystals(electronic);Definitions;Electricalengineering;Electricalproperties;Electricalpropertiesandphenomena;Electronicequipmentandcomponents;Finishes;Frequencystabilization;Measuringtechniques;Methodsformeasuring;Piezoelectricdevices;Piezoelectricity;Quartzcrystals;Ratings;Singlecrystal;Specification;Specification(approval);Specifications;Surfaceacousticwavedevices;Surfaceacousticwaves;Testing;Wafers
【摘要】:ThisInternationalStandardappliestothemanufactureofsyntheticquartz,lithiumniobate(LN),lithiumtantalate(LT),lithiumtetraborate(LBO),andlanthanumgalliumsilicate(LGS)singlecrystalwafersintendedforuseassubstratesinthemanufactureofsurfaceacousticwave(SAW)filtersandresonators.
【中国标准分类号】:L21
【国际标准分类号】:31_140
【页数】:40P.;A4
【正文语种】:英语


【英文标准名称】:Cycles;splinedhubandsprocket;matingdimensions
【原文标准名称】:自行车键槽后轴身和飞轮配合尺寸
【标准号】:ISO10230-1990
【标准状态】:现行
【国别】:国际
【发布日期】:1990-12
【实施或试行日期】:1990-12-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC149
【标准类型】:()
【标准水平】:()
【中文主题词】:道路车辆;自行车;链轮;尺寸;齿轮;轮毂
【英文主题词】:Chainwheels;Cycles;Dimensions;Gearwheels;Hubs;Roadvehicles
【摘要】:Specifiesmatingdimensionsandtolerancesforthesprocketandsplinesofthehubofaninternallygearedhuborabackpedalbrakehubonacycle.Thedimensionsandtolerancesforthefittingshallbeasgiveninfigure1.
【中国标准分类号】:Y14
【国际标准分类号】:43_150
【页数】:2P;A4
【正文语种】:英语