ANSI/SCTE 49-2011 传播速度试验方法
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【英文标准名称】:TestMethodforVelocityofPropagation
【原文标准名称】:传播速度试验方法
【标准号】:ANSI/SCTE49-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Communicationtechnology;Propagation;Telecommunications;Testing;Transmissiontechnique;Velocity
【摘要】:Providesameanstomeasurethevelocityofpropagation(Vp),incoaxialcables.Thisstandardisforusewithcableshavinglow-lossdielectrics,asnotedinANSI/SCTE15andANSI/SCTE74,thathaverelativepermittivitynearlyconstantwithfrequency.
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforAutomaticSamplingofGaseousFuels
【原文标准名称】:气体燃料的自动抽样的标准实施规程
【标准号】:ASTMD5287-2008
【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】:D03.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:gaseousfuels;Automaticsampling;Gaseousfuels;Samplinggaseousmaterials/applications
【摘要】:Thispracticeshouldbeusedwhenandwherearepresentativesampleisrequired.Arepresentativesampleisnecessaryforaccuratebillingincustodytransfertransactions,accuratecompositionalanalysisoftheflowingstream,gravitydeterminationforflowcalculationsandotherdesiredinformationconcerningthepropertiesofthestreamcontents.Thispracticeisnotintendedtopreemptexistingcontractagreementsorregulatoryrequirements.Principlespertinenttothispracticemaybeappliedinmostcontractualagreements.Warning8212;Manygagesareextremelyflammableandcancontaintoxicsubstances.Cautionshouldbetakeninallaspectsofsamplecollectionandhandling.Samplevesselsshouldonlybehandledinwellventilatedlocationsawayfromsparksandflames.Improperhandlingcanresultinanexplosionorinjury,orboth.1.1Thispracticecoversthecollectionofgaseousfuelsandtheirsyntheticequivalentsusinganautomaticsampler.1.2Thispracticeappliesonlytosingle-phasegasmixtures.Thispracticedoesnotaddressatwo-phasestream.1.3Thispracticeincludestheselection,installation,andmaintenanceofautomaticsamplingsystems.1.4Thispracticedoesnotincludetheactualanalysisoftheacquiredsample.OtherapplicableASTMstandards,suchasTestMethodD1945,shouldbeusedtoacquirethatinformation.1.5Theselectionofthesamplingsystemisdependentonseveralinterrelatedfactors.Thesefactorsincludesourcedynamics,operatingconditions,cleanlinessofthesourcegases,potentialpresenceofmoistureandhydrocarbonliquids,andtracehazardouscomponents.Forclean,drygassources,steadysourcedynamics,andnormaloperatingconditions,thesystemcanbeverysimple.Asthesourcedynamicsbecomemorecomplexandthepotentialforliquidsincreases,ortracehazardouscomponentsbecomepresent,thecomplexityofthesystemselectedanditscontrollinglogicmustbeincreased.Similarly,installation,operation,andmaintenanceproceduresmusttakethesedynamicsintoaccount.1.6Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【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】:英语
【英文标准名称】:Highefficiencyairfilters(EPA,HEPAandULPA)-Aerosolproduction,measuringequipment,particlecountingstatistics
【原文标准名称】:高效空气过滤器(HEPA和ULPA).气溶胶产品、测量设备、颗粒计数统计
【标准号】:BSEN1822-2-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-01-31
【实施或试行日期】:2010-01-31
【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】:气溶胶发生器;气溶胶;空气过滤器;空调系统;无菌室;无菌技术;粒子浓缩;计数;过滤器;发电;大容量;高效空气尘粒过滤机;测量;测量仪器;测量技术;机械工程;方法;核技术;颗粒滤器;颗粒数;颗粒;颗粒物质的测定;药剂学;换气过程;生产;分离效率;分离器;规范(验收);统计方法分析;统计学;试验用气雾剂;测试;测试条件
【英文主题词】:Aerosolgenerators;Aerosols;Airfilters;Air-conditioningsystems;Cleanrooms;Clean-roomtechnology;Concentrationofparticles;Counting;Filters;Generation;Highcapacity;High-efficiencysubmicronparticulateairfilters;Measurement;Measuringinstruments;Measuringtechniques;Mechanicalengineering;Methods;Nucleartechnology;Particlefilters;Particlenumber;Particles;Particulatemattermeasurement;Pharmacy;Processventilation;Production;Separationefficiency;Separators;Specification(approval);Statisticalmethodsofanalysis;Statistics;Testaerosols;Testing;Testingconditions
【摘要】:ThisEuropeanStandardappliestoefficientparticulateairfilters(EPA),highefficiencyparticulateairfilters(HEPA)andultralowpenetrationairfilters(ULPA)usedinthefieldofventilationandairconditioningandfortechnicalprocesses,e.g.forapplicationsincleanroomtechnologyorpharmaceuticalindustry.Itestablishesaprocedureforthedeterminationoftheefficiencyonthebasisofaparticlecountingmethodusingaliquid(oralternativelyasolid)testaerosol,andallowsastandardizedclassificationofthesefiltersintermsoftheirefficiency,bothlocalandintegralefficiency.ThisEuropeanStandarddescribesthemeasuringinstrumentsandaerosolgeneratorsusedinthecourseofthistesting.Withregardtoparticlecountingitspecifiesthestatisticalbasisfortheevaluationofcountswithonlysmallnumbersofcountedevents.
【中国标准分类号】:J77
【国际标准分类号】:13_040_40
【页数】:30P.;A4
【正文语种】:英语
