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【英文标准名称】:Oil-filledelectricalequipment-Samplingofgasesandofoilforanalysisoffreeanddissolvedgases-Guidance
【原文标准名称】:注油电气设备.游离和溶解气体分析用气体和油的取样.指南
【标准号】:BSEN60567-2005
【标准状态】:作废
【国别】:英国
【发布日期】:2005-12-02
【实施或试行日期】:2005-12-02
【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;电容器;色谱法;检定极限;溶解气体;电驱动装置;萃取;气体分析;气相色谱法;气体试样;气体;导则;充油电缆;充油电气设备;油;质量;继电器;试样;抽样方法;真空的
【英文主题词】:Analysis;Capacitors;Chromatography;Detectionlimits;Dissolvedgases;Electrically-operateddevices;Extraction;Gasanalysis;Gaschromatography;Gassamples;Gases;Guidelines;Oil-filledelectriccables;Oil-filledelectricalequipment;Oils;Quality;Relays;Samples;Samplingmethods;Vacuum
【摘要】:ThisInternationalStandarddealswiththetechniquesforsamplingfreegasesfromgascollectingrelaysandforsamplingoilfromoil-filledequipmentsuchaspowerandinstrumenttransformers,reactors,bushings,oil-filledcablesandoil-filledtank-typecapacitors.Threemethodsofsamplingfreegasesandthreemethodsofsamplingoilaredescribed;thechoicebetweenthemethodsoftendependsontheapparatusavailableandonthequantityofoilneededforanalysis.Beforeanalysingthegasesdissolvedinoil,theymustfirstbeextractedfromtheoil.Threebasicmethodsaredescribed,oneusingextractionbyvacuum(Toeplerandpartialdegassing),anotherbydisplacementofthedissolvedgasesbybubblingthecarriergasthroughtheoilsample(stripping),andthelastonebypartitionofgasesbetweentheoilsampleandasmallvolumeofthecarriergas(headspace).Thegasesareanalysedquantitativelyafterextractionbygaschromatography;amethodofanalysisisdescribed.Freegasesfromgas-collectingrelaysareanalysedwithoutpreliminarytreatment.Thepreferredmethodforassuringtheperformanceofthegasextractionandanalysisequipment,consideredtogetherasasinglesystem,istodegassamplesofoilpreparedinthelaboratoryandcontainingknownconcentrationsofgases(“gas-in-oilstandards”)andquantitativelyanalysethegasesextracted.Twomethodsofpreparinggas-in-oilstandardsaredescribed.Fordailycalibrationchecksofthechromatograph,itisconvenienttouseastandardgasmixturecontainingasuitableknownamountofeachofthegascomponentstobeinasimilarratiotothecommonsratiosofthegasesextractedfromtransformeroils.Thetechniquesdescribedtakeaccount,ontheonehand,oftheproblemspeculiartoanalysesassociatedwithacceptancetestinginthefactory,wheregascontentsofoilaregenerallyverylowand,ontheotherhand,oftheproblemsimposedbymonitoringequipmentinthefield,wheretransportofsamplesmaybebyun-pressurizedairfreightandwhereconsiderabledifferencesinambienttemperaturemayexistbetweentheplantandtheexamininglaboratory.
【中国标准分类号】:K30
【国际标准分类号】:17_220_99;29_040_10;29_035_99
【页数】:68P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforScreeningFuelsinSoils
【原文标准名称】:土壤中筛分燃料的标准试验方法
【标准号】:ASTMD5831-2002
【标准状态】:作废
【国别】:美国
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验方法;土壤分析;土壤学;屏蔽;液体燃料
【英文主题词】:soilscience;liquidfuels;soilanalysis;screening;testmethods
【摘要】:
【中国标准分类号】:Z13
【国际标准分类号】:13_080_10
【页数】:10P;A4
【正文语种】:英语