DIN 18800 T.7-1983 钢结构建筑.制造.焊接性能说明
时间:2024-05-15 02:43:54 来源: 标准资料网 作者：标准资料网 阅读：8719
【英文标准名称】:Steelstructures;Fabrication,verificationofsuitabilityforwelding
【原文标准名称】:钢结构建筑.制造.焊接性能说明
【标准号】:DIN18800T.7-1983
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【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】:StandardTestMethodforOnlineMeasurementofSulfurCompoundsinNaturalGasandGaseousFuelsbyGasChromatographandElectrochemicalDetection
【原文标准名称】:用气相色谱法和电化学检测法在线检测天然气和气体燃料中硫化物的标准试验方法
【标准号】:ASTMD7493-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D03.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:electrochemicaldetection;gaschromatography;odorants;on-linemeasurement;sulfurcompounds
【摘要】:Gaseousfuels,suchasnaturalgas,petroleumgasesandbio-gases,containvaryingamountsandtypesofsulfurcompounds.Thesesulfurcompoundsaregenerallyodorous,corrosivetoequipment,andcaninhibitordestroycatalystsemployedingasprocessingandenduse,suchasthoseusedinfuelcell.Theiraccurateon-linemeasurementisessentialtogasprocessing,operationandutilization,andofregulatoryinterest.Smallamounts(typically,total4-6PPMv)ofsulfurodorantsareaddedtonaturalgasandotherfuelgasesforsafetypurposes.Somesulfurodorantscanbereactive,andmaybeoxidized,formingmorestablesulfurcompoundshavinglowerodorthresholds.Thesegaseousfuelsareanalyzedforsulfurodorantstohelpinmonitoringandtoensureappropriateodorantlevelsforpublicsafety.Thismethodoffersanon-linetechniquetocontinuouslyidentifyandquantifyindividualtargetsulfurspeciesingaseousfuelwithautomaticcalibrationandvalidation.1.1Thistestmethodisforon-linemeasurementofvolatilesulfur-containingcompoundsingaseousfuelsbygaschromatography(GC)andelectrochemical(EC)detection.Thetestmethodisapplicabletohydrogensulfide,C1-C4mercaptans,sulfidesandtetrahydrothiophene(THT).1.1.1Carbonylsulfide(COS)isnotcoveredinthistestmethod.1.1.2Thedetectionrangeforsulfurcompoundsisapproximatelyfrom0.1to100PPMvor0.1to100mg/m3.Thedetectionrangemayvarydependingonthesampleinjectionvolume,chromatographicpeakseparationandthesensitivityofspecificECdetector.1.2ThistestmethoddescribesaGC-ECmethodemployingpackedGCcolumnsandaspecificdetectorasanillustrationfornaturalgasandothergaseousfuelcontainingmainlylighthydrocarbons.AlternativeGCcolumns,detectordesignsandinstrumentparametersmaybeusedforthesameanalysisorfordifferenttypesofgaseousfuel,providedthatappropriatechromatographicseparationandoptimaldetectionofthesecompoundscanbeachieved.1.3Thistestmethoddoesnotintendtoidentifyandmeasureallindividualsulfurspecies,andismainlyemployedformonitoringnaturalsulfurandsulfurodorantcompoundscommonlyfoundinfuelgasesoremployedasanodorouswarningagentinfuelgases.1.4Thetestmethodisnormallyemployedforrepetitiveon-linemonitoringofsulfurcomponentsinfuelgaseswithasinglesulfurstandard.Thetestmethodmaybeemployedforlaboratory-qualitymeasurementwithmoreextensivecalibration.(SeeTestMethodsD5504,D5623,D6228,D6968,ISO19739,ISO6326-2,andGPA2199.)1.5Thetestmethodcanbeusedformeasurementofalllistedsulfurcompoundsinairorothergases,providedthatnocompound,whichcaninterferewiththeGCseparationandelectrochemicaldetection,ispresent.1.6ThistestmethodiswritteninconjunctionwithPracticesD5287,D7165andD7166.1.7ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E24
【国际标准分类号】:75_160_30
【页数】:7P.;A4
【正文语种】:英语
【英文标准名称】:Coaxialcommunicationcables-Part1-205:Environmentaltestmethods-Resistancetosolventsandcontaminatingfluids
【原文标准名称】:同轴通信电缆.第1-205部分:环境试验方法.耐溶剂和耐污染液体
【标准号】:IEC61196-1-205-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-02
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC46A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆护套;电缆;同轴电缆;通信电缆;设计;电气工程;电气试验;环境条件;杂质;绝缘电缆;绝缘件;材料;机械性能;特性;射频电缆;耐力;铠装电缆;溶剂;规范(验收);分芯电缆;对称的;电信;测试;试验流体;热性能
【英文主题词】:Cablesheaths;Cables;Coaxialcables;Communicationcables;Design;Electriccables;Electricalengineering;Electricaltesting;Environmentalcondition;Impurities;Insulatedcables;Insulations;Materials;Mechanicalproperties;Properties;Radiofrequencycables;Resistance;Shieldedcables;Solvents;Specification(approval);Splitconcentriccables;Symmetrical;Telecommunications;Testing;Testingfluids;Thermalproperties
【摘要】:ThispartofIEC61196appliestocoaxialcommunicationcables.Itspecifiestestmethodstodeterminetheabilitytowithstandsolventsandcontaminatingfluids.
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:16P.;A4
【正文语种】: