BS ISO TR 10064-2-1997 圆柱齿轮.检验实施标准.与径向组合偏差,径向跳动,齿厚和齿隙相关的检验
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【英文标准名称】:Codeofinspectionpractice-Inspectionrelatedtoradialcompositedeviations,runout,tooththicknessandbacklash
【原文标准名称】:圆柱齿轮.检验实施标准.与径向组合偏差,径向跳动,齿厚和齿隙相关的检验
【标准号】:BSISOTR10064-2-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-03-15
【实施或试行日期】:1997-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:检验;数学计算;尺寸;厚度测量;尺寸公差;定义;符号;正齿轮;偏心齿轮;齿轮参数;齿轮传动;斜齿轮;形状公差;配合
【英文主题词】:Bushings;Compositeerrors;Concentricrunning;Definition;Definitions;Dual-flankcontactrollingtests;Flankclearance;Instructions;Spurgears;Testing;Tooththickness
【摘要】:ThispartoftheTechnicalReportconstitutesacodeofpracticedealingwithinspectionrelevanttoradialcompositedeviations,runout,tooththicknessandbacklashofcylindricalinvolutegears;i.e.,withmeasurementsreferredtodoubleflankcontact.Inprovidingadviceongearcheckingmethodsandtheanalysisofmeasurementresults,itsupplementsthestandardISO1328-2.MostofthetermsusedaredefinedinISO1328-2.AnnexAprovidesamethodtoselectgeartooththicknesstolerancesandminimumbacklashofagearmesh.Suggestedvaluesforminimumbacklashareincluded.
【中国标准分类号】:J17
【国际标准分类号】:21_200
【页数】:42P.;A4
【正文语种】:英语
【英文标准名称】:StandardforSafetyforOpticalFiberCable
【原文标准名称】:光缆安全标准
【标准号】:ANSI/UL1651-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:光波导;纤维光学
【英文主题词】:fibreoptics;opticalwaveguides
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminationofFormaldehydeandOtherCarbonylCompoundsinAir(ActiveSamplerMethodology)
【原文标准名称】:测定空气中甲醛和其他羰基化合物的标准试验方法(活性取样法)
【标准号】:ASTMD5197-2009e1
【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】:D22.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:活性取样;空气;羰基化合物;二硝基苯肼套筒;甲醛;高效液相色谱分析;高效液相色谱法;活性取样法;空气分析;醛;大气分析
【英文主题词】:activesampler;air;carbonylcompounds;DNPHcartridge;formaldehyde;HPLCanalysis;HPLC(highperformanceliquidchromatography);Activesamplermethodology;Airanalysis;Aldehydes;Atmosphericanalysis
【摘要】:Thistestmethodprovidesananalyticalprocedureformeasuringformaldehydeandothercarbonylcompoundsinindoororoutdoorair.1.1Thistestmethodcoversaprocedureforthedeterminationofformaldehyde(HCHO)andothercarbonylcompounds(aldehydesandketones)inair.Othercarbonylcompoundsthathavebeenvalidatedfordeterminationbythismethodincludeacetaldehyde,acetone,propanal(propionaldehyde),methacrolein,2-butanone(methylethylketone),butyraldehyde,benzaldehyde,isovaleraldehyde,valeraldehyde,o-tolualdehyde,m-tolualdehyde,p-tolualdehyde,hexanal,and2,5-dimethylbenzaldehyde.Acroleinandcrotonaldehydecannotbedeterminedquantitativelyusingtheanalyticalproceduredescribedin10.2duetotheformationofmultiplederivativepeaksandtheinstabilityofthepeakratios.However,theproceduredescribedintheAnnexAhasbeenusedbytheU.S.EnvironmentalProtectionAgencytoestimateacroleinandcrotonaldehydeconcentrationsinstandardatmospheresfollowingspecialprecautions.1.2Thistestmethodinvolvesdrawingairthroughacartridgecontainingsilicagelcoatedwith2,4-dinitrophenylhydrazine(DNPH)reagent.CarbonylcompoundsreadilyformstablederivativeswiththeDNPHreagent.TheDNPHderivativesareanalyzedforparentaldehydesandketonesutilizinghighperformanceliquidchromatography(HPLC).ThesamplingprocedureisamodificationofU.S.EPAMethodTO-11A(see2.2).1.3ThistestmethodisbasedonthespecificreactionofcarbonylcompoundswithDNPHinthepresenceofanacidtoformstablederivativesaccordingtothereactionshowninFig.1,(where:bothRandR1arealkyloraromaticgroups(ketones),orboth,oreitherRorR1isahydrogenatom(aldehydes)).Thedeterminationofformaldehydeandothercarbonylcompounds,asDNPHderivatives,issimilartothatofU.S.EPAMethodTO-11AinthatitutilizesHPLCwithUVdetectionastheanalyticalfinish.ThedetectionlimitshavebeenextendedtoothercarbonylcompoundsthatcanbedeterminedasoutlinedinSection10.2.4.Thistestmethodissuitablefordeterminationofformaldehydeandothercarbonylcompoundsintheconcentrationrangefromapproximately10ppbto1ppm(v/v).1.4Thesamplingmethodgivesatime-weightedaverage(TWA)sample.Itcanbeusedforlong-term(1to24h)orshort-term(5to60min)samplingofairforformaldehyde.1.5ThistestmethodinstructstheuseronhowtopreparesamplingcartridgesfromcommerciallyavailablechromatographicgradesilicagelcartridgesbytheapplicationofacidifiedDNPHtoeachcartridge.1.6Thesamplingflowrate,asdescribedinthistestmethod,hasbeenvalidatedforsamplingratesupto1.5L/min.Thisflowratelimitationisprincipallyduetothehighpressuredrop(>8kPaat1.0L/min)acrosstheuserpreparedsilicagelcartridgeswhichhaveaparticlesizeof55to105x03BC;m.Thesecartridgesarenotgenerallycompatiblewithbattery-poweredpumpsusedinpersonalsamplingequipment(forexample,thoseusedbyindustrialhygienists.1.7Alternatively,pre-coatedDNPHsilicagelcartridgesarealsocommerciallyavailableandmaybesubstitutedprovidedtheycanbedemonstratedtoperformequivalently.Someoftheseusesilicagelofalargerparticlesizethatresultsinalowerpressuredropacrossthecartridge.Theselowpressuredropcartridgesmaybemoresuitableforsamplingairusingbattery-poweredpersonalsamplingpumps.1.8ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.9Thisstandarddoesnotpurporttoa......
【中国标准分类号】:C51
【国际标准分类号】:71_080_80
【页数】:16P.;A4
【正文语种】:
