NF C93-542-3-1-2004 用于模拟与数字通信和控制的多元件金属电缆.第3-1部分:100MHz及以下非屏蔽电缆分规范.水平的和建筑物主干电缆
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【英文标准名称】:Multi-elementmetalliccablesusedinanalogueanddigitalcommunicationandcontrol-Part3-1:sectionalspecificationforunscreenedcablescharacterisedupto100MHz-Horizontalandbuildingbackbonecables.
【原文标准名称】:用于模拟与数字通信和控制的多元件金属电缆.第3-1部分:100MHz及以下非屏蔽电缆分规范.水平的和建筑物主干电缆
【标准号】:NFC93-542-3-1-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-03-01
【实施或试行日期】:2004-03-20
【发布单位】:法国标准化协会(AFNOR)
【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】:K13
【国际标准分类号】:33_120_20
【页数】:11P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforConditioningPlasticsforTesting
【原文标准名称】:试验用的塑料调节规程
【标准号】:ASTMD618-2008
【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】:D20.50
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:conditioning;humidity;plastics;temperature;Atmospheres--conditioning/testing;Conditioning--electricalinsulatingmaterials;Conditioning--plastics;Electricalinsulatingplastics;Relativehumidity(RH);Specimenpreparation(fortesting)--plastic
【摘要】:Conditioningofspecimensistypicallyconducted:(1)forthepurposeofbringingthematerialintoequilibriumwithnormaloraverageroomconditions,(2)simplytoobtainreproducibleresults,regardlessofprevioushistoryofexposure,or(3)tosubjectthematerialtoabnormalconditionsoftemperatureorhumidityinordertopredictitsservicebehavior.Theconditioningproceduresprescribedinthispracticearedesignedtoobtainreproducibleresultsandhavethepotentialtogivephysicalvaluessomewhathigherorsomewhatlowerthanvaluesunderequilibriumatnormalconditions,dependingupontheparticularmaterialandtest.Dependingonthethickness,typeofmaterialanditsprevioushistory,itispossiblethatitwouldtake20to100daysormoretoensuresubstantialequilibriumundernormalconditionsofhumidityandtemperature.Consequently,conditioningforreproducibilitymustofnecessitybeusedforgeneralpurchasespecificationsandproductcontroltests.1.1Ingeneral,thephysicalandelectricalpropertiesofplasticsareinfluencedbytemperatureandrelativehumidityinamannerthatmateriallyaffectstestresults.Inordertomakereliablecomparisonsbetweendifferentmaterialsandbetweendifferentlaboratories,itisnecessarytostandardizethehumidityconditions,aswellasthetemperature,towhichspecimensofthesematerialsaresubjectedpriortoandduringtesting.Thispracticedefinesproceduresforconditioningplastics(althoughnotnecessarilytoequilibrium)priortotesting,andtheconditionsunderwhichtheyshallbetested.1.2Forsomematerials,itispossiblethatamaterialspecificationexiststhatrequirestheuseofthispractice,butwithsomeproceduralmodifications.Thematerialspecificationtakesprecedenceoverthispractice.Refertothematerialspecificationbeforeusingthispractice.Table1inClassificationD4000liststheASTMmaterialspecificationsthatcurrentlyexist.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThisstandardandISO291addressthesamesubjectmatter,butdifferintechnicalcontent.ISO291describesonlytwotemperatureandhumidityconditionsforconditioningortesting,orboth.
【中国标准分类号】:G31
【国际标准分类号】:29_035_20
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Expressionofperformanceofelectrochemicalanalyzers-pHvalue
【原文标准名称】:电化学分析仪性能的表示法.pH值
【标准号】:BSEN60746-2-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-06-19
【实施或试行日期】:2003-06-19
【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】:规范(验收);测量;电气工程;化学分析和试验;定义;电子测量装置;变流器;发射机;试验;工作性能;磨损量;测量仪器;电离;电学测量仪表;电子工程;物理特性;pH计;pH值;电化学方法;电化学装置;性能规范;测头;电化学;性能试验;检验;质量;pH值测定;特性;测量设备;分析仪;传感器;传感器;性能
【英文主题词】:Analyzers;Chemicalanalysisandtesting;Converters;Definitions;Electricalengineering;Electricalmeasuringinstruments;Electrochemicaldevices;Electrochemicalmethods;Electrochemistry;Electronicengineering;Electronicmeasuringdevices;Inspection;Ionization;Measurement;Measuringequipment;Measuringinstruments;Performance;Performanceinservice;Performancespecification;Performancetesting;pH;pHmeasurement;pHmeters;Physicalcharacteristics;Properties;Quality;Sensors;Specification(approval);Testing;Transducers;Transmitters;Wear-quantity
【摘要】:TobereadinconjunctionwithBSEN60746-1
【中国标准分类号】:N53
【国际标准分类号】:71_040_40
【页数】:24P.;A4
【正文语种】:英语
