【英文标准名称】:Fluidpowersystemsandcomponents.Graphicsymbolsandcircuitsdiagrams.Part2:circuitdiagrams.
【原文标准名称】:流体动力系统和部件.图形符号和电路图.第2部分:电路图
【标准号】:NFE04-057-1998
【标准状态】:作废
【国别】:法国
【发布日期】:1998-06-01
【实施或试行日期】:1998-06-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:工程图;计划;设计;定义;数据表示;图形符号;符号;液压装置;流体技术;作标记;液压系统;气动系统;液压设备;布置;流体工程;液压传动;尺寸;尺寸;图形表示;数据;电路图;识别方法;图示;气动力学
【英文主题词】:Circuitdiagrams;Data;Datarepresentation;Definition;Definitions;Design;Diagrams;Engineeringdrawings;Fluidengineering;Fluidtechnologies;Graphicrepresentation;Graphicsymbols;Hydraulicequipment;Hydraulicfluidpower;Hydraulicsystems;Hydraulics;Identificationmethods;Layout;Marking;Planning;Pneumaticsystems;Pneumatics;Size;Sizes;Symbols
【摘要】:
【中国标准分类号】:J20
【国际标准分类号】:01_080_30;23_100_01
【页数】:29P.;A4
【正文语种】:其他


【英文标准名称】:Measurementoflow-frequencymagneticandelectricfieldswithregardtoexposureofhumanbeings-Specialrequirementsforinstrumentsandguidanceformeasurements
【原文标准名称】:关于人体暴露的低频电场和磁场的测量仪表的特殊要求和测量指南
【标准号】:IEC61786-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:电学测量;测量仪器;电磁学;测量设备;电学测量仪表;低频;测量技术;规范(验收);磁场;电气工程;电场
【英文主题词】:
【摘要】:ThisInternationalStandardprovidesguidanceformeasuringthesteady-stateroot-mean-square(r.m.s.)valuesofquasi-staticmagneticandelectricfieldswhichhaveafrequencycontentintherange15Hzto9kHz.Sourcesofquasi-staticfieldsincludedevicesthatoperateatpowerfrequenciesandproducepowerfrequencyandpowerfrequencyharmonicfields,aswellasdevicesthatproducefieldsindependentofthepowerfrequency.Themagnituderangescoveredbythisstandardare100nTto100mTand1V/mto50kV/mformagneticfieldsandelectricfields,respectively.Whenmeasurementsoutsidethisrangeareperformed,mostoftheprovisionsofthisstandardwillstillapply,butcertainprovisionssuchasspecifieduncertaintyandcalibrationproceduremayneedmodification.Specifically,thisstandard-definesterminology;-identifiesrequisitefieldmeterspecifications;-indicatesmethodsofcalibration;-definesrequirementsoninstrumentationuncertainty;-describesgeneralcharacteristicsoffields;-surveysoperationalprinciplesofinstrumentation;-describesmeasurementmethodsthatachievedefinedgoalspertainingtohumanexposure.Sourcesofuncertaintyduringcalibrationandmeasurementsarealsoidentifiedandguidanceisprovidedonhowtheyshouldbecombinedtodeterminetotalmeasurementuncertainty.Inregardtoelectricfieldmeasurements,thisstandardconsidersonlythemeasurementoftheunperturbedelectricfieldstrengthatapointinspace(i.e.theelectricfieldpriortotheintroductionofthefieldmeterandoperator)oronconductingsurfaces.NOTE-Someseparationbetweenthenormativemeasurementrequirementsinclauses5and6andtheexamplemeasurementprotocolsandguidanceformeasurementsinannexesDandEisunavoidablebecauseofformatrequirements.
【中国标准分类号】:K04
【国际标准分类号】:17_220_20
【页数】:177P;A4
【正文语种】:英语