ISO 8054-1996 混炼橡胶或硫化橡胶硫化物中硫含量的测定碘量法
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【英文标准名称】:Rubber,compoundedorvulcanized-Determinationofsulfidesulfurcontent-Iodometricmethod
【原文标准名称】:混炼橡胶或硫化橡胶硫化物中硫含量的测定碘量法
【标准号】:ISO8054-1996
【标准状态】:现行
【国别】:国际
【发布日期】:1996-02
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC45
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;试验设备;硫化橡胶;滴定法;硫化物含量;橡胶;硫化物;硫;含量测定
【英文主题词】:Chemicalanalysisandtesting;Determinationofcontent;Rubber;Sulphidecontent;Sulphides;Sulphur;Testequipment;Titrimetry;Vulcanizedrubber
【摘要】:Describesaniodometricmethodforthedeterminationofsulfidesulfurinunvulcanizedcompoundedrubbersandinvulcanisates.Applicabletochlorinatedrubbers,nitrilerubbersandhydrocarbonrubbersincludingnaturalrubber.Replacesthefirstedition.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:Electricalapparatusforuseinthepresenceofcombustibledust-Selectionandinstallation
【原文标准名称】:有可燃性粉尘场所用电气设备.选择和安装
【标准号】:BSEN61241-14-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-11-26
【实施或试行日期】:2004-11-26
【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】:表面温度;火花;保护形式;爆炸危险;爆炸性环境;可燃性;易燃材料;临界温度;尘埃;防尘罩;规范(验收);灰尘爆炸;电气设备;燃料;保护设备;安装;安装;安全措施;安装规范;点火防护装置;选择;可燃性环境;测量仪器;保护措施;防护等级;电气安全;电气工程;电驱动装置;试样;电气器具;外壳;尘状的;防爆;维修;设备;定义;试验;电气外壳;易燃性;防火安全;容器密封性;防尘的;ID型保护电气设备;MD型保护电气设备;TD型保护电气设备;交付使用
【英文主题词】:Casetightness;Combustibility;Combustible;Commissioning;Definition;Definitions;Degreesofprotection;Dust;Dustexplosions;Dustguards;Dusttight;Dusty;Electricappliances;Electricenclosures;Electricalengineering;Electricalequipment;Electricalsafety;Electrically-operateddevices;Enclosures;Equipment;Erection;Erectionspecification;Explosionhazard;Explosionprotection;Explosiveatmospheres;Firesafety;Flammableatmospheres;Flammablematerials;Ignitionprotection;Inflammable;Installations;Maintenance;Measuringinstruments;Protectiondevices;Protectivemeasures;Safetymeasures;Samples;Selection;Sparking;Specification(approval);Surfacetemperatures;Temperaturelimits;Testing;TypeiDprotectedelectricalequipment;TypemDprotectedelectricalequipment;Typeofprotection;TypepDprotectedelectricalequipment;TypetDprotectedelectricalequipment
【摘要】:ThispartofIEC61241specifiesgeneralrequirements,additionaltothoserequiredforbasicelectricalsafety,fortheselectionofelectricalapparatusandinstrumentsandassociatedequipment,andfortheinstallationofelectricalapparatustoensuresafeuseinareaswherecombustibledustmaybepresentinquantitieswhichcouldleadtoafireorexplosionhazard.NOTEVariouspartsoftheIEC61241seriesspecifyrequirementsforthedesign,constructionandtestingofelectricalapparatus.Apparatuswithinthescopeofthisstandardmayalsobesubjectedtoadditionalrequirementsinotherstandards.Theapplicationofelectricalapparatusinatmosphereswhichmaycontainexplosivegasaswellascombustibledust,whethersimultaneouslyorseparately,requiresadditionalprotectivemeasureswhicharenotwithinthescopeofthisstandard.Thisstandardincludesseveraltypesofprotectionthatprotecteitherfromingressofdustorhaveinsufficientenergytocauseignitionandprovidesurfacetemperaturelimitation.Theprinciplesofthisstandardmayalsobefollowedwhencombustiblefibresorflyingscauseahazard.Wheretheapparatusisrequiredtomeetotherenvironmentalconditions,forexample,protectionagainstingressofwaterandresistancetocorrosion,additionalmethodsofprotectionmaybenecessary.Themethodusedshouldnotadverselyaffecttheintegrityoftheenclosure.Therequirementsofthisstandardapplyonlytotheuseofelectricalapparatusundernormalornearnormalatmosphericconditions.Forotherconditions,additionalprecautionsmaybenecessary.Forexample,mostflammablematerialsandmanymaterialswhicharenormallyregardedasnon-flammablemightburnvigorouslyunderconditionsofoxygenenrichment.Otherprecautionsmightalsobenecessaryintheuseofelectricalapparatusunderconditionsofextremetemperatureandpressure.Suchprecautionsarebeyondthescopeofthisstandard.Thisstandarddoesnotapplytodustfromexplosiveswhichdonotrequireatmosphericoxygenforcombustion;neitherdoesitapplytopyrophoricsubstances.Thisstandardisnotapplicabletoelectricalapparatusintendedforuseinundergroundpartsofmines,northosepartsofsurfaceinstallationsofsuchminesendangeredbyfiredampand/orcombustibledust.Thisstandarddoesnottakeaccountofanyriskduetoanemissionofflammableortoxicgasfromthedust.Therequirementsspecifiedinthisstandardaresupplementarytoandnotalternativetoanyrequirementsthatwouldapplytoapparatusandinstallationsinnon-hazardousareas.
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:44P.;A4
【正文语种】:英语
【英文标准名称】:Measurementofquartzcrystalunitparametersbyzerophasetechniqueina-network;part1:basicmethodforthemeasurementofresonancefrequencyandresonanceresistanceofquartzcrystalunitsbyzerophasetechniqueina-network;identical
【原文标准名称】:用π型网络的零相位技术测量石英谐振器参数.第1部分:用π型网络零相位技术测量石英谐振器的谐振频率和谐振电阻的基本方法
【标准号】:DINIEC60444-1-1993
【标准状态】:作废
【国别】:德国
【发布日期】:1993-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:压电器件;测量仪器;电气工程;电子工程;测量技术;谐振阻抗;共振频率;晶体(电子);频率;石英
【英文主题词】:resonanceresistance;resonantfrequency;measuringinstruments;crystals(electronic);frequencies;electronicengineering;electricalengineering;quartz;measuringtechniques;piezoelectricdevices
【摘要】:
【中国标准分类号】:L21
【国际标准分类号】:31_140
【页数】:19P;A4
【正文语种】:德语
