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【英文标准名称】:Transmittersforuseinindustrial-processcontrolsystems.Methodsforperformanceevaluation
【原文标准名称】:工业过程控制系统用传输机.性能评估方法
【标准号】:BSEN60770-1-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-06-30
【实施或试行日期】:2011-06-30
【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】:
【英文主题词】:Control;Controlengineering;Controlequipment;Controlsystems;Controltechnology;Converters;Electriccontrolequipment;Electricalengineering;Industrial;Industrialprocessmeasurement;Industries;Inspection;Instructions;Performanceinservice;Performancetesting;Pneumaticcontrolsystems;Processcontrol;Processmeasuringandcontroltechnology;Testing;Transducers;Transmitters;Wear-quantity
【摘要】:ThispartofIEC60770isapplicabletotransmitterswhichhaveeitherastandardanalogueelectriccurrentoutputsignalorastandardpneumaticoutputanaloguesignalinaccordancewithIEC60381-1orIEC60382.Thetestsdetailedhereinmaybeappliedtotransmitterswhichhaveotheroutputsignals,providedthatdueallowanceismadeforsuchdifferences.FortheevaluationoftheintelligenttransmittersseeIEC60770-3.Forcertaintypesoftransmitterswherethesensorisanintegralpart,otherspecificIECorISOstandardsmayneedtobeconsulted(e.g.forchemicalanalysers,flowmeters,etc.)Thisstandardisintendedtospecifyuniformmethodsoftestfortheevaluationoftheperformanceoftransmitterswithpneumaticorelectricoutputsignals.Themethodsofevaluationspecifiedinthisstandardareintendedforusebymanufacturerstodeterminetheperformanceoftheirproductsandbyusersorindependenttestingestablishmentstoverifymanufacturers'performancespecifications.Thetestconditionsdefinedinthisstandard,forexampletherangeofambienttemperaturesandpowersupply,representthosewhichcommonlyariseinuse.Consequently,thevaluesspecifiedhereinshouldbeusedwherenoothervaluesarespecifiedbythemanufacturer.Thetestsspecifiedinthisstandardarenotnecessarilysufficientforinstrumentsspecificallydesignedforunusuallyarduousorsafetyrelatedduties.Conversely,arestrictedseriesoftestmaybesuitableforinstrumentsdesignedtoperformwithinamorelimitedrangeofconditions.Whenafullevaluationinaccordancewiththisstandardisnotrequired,thosetestswhicharerequiredshallbeperformedandtheresultsreportedinaccordancewiththosepartsofthestandardwhicharerelevant.
【中国标准分类号】:N18
【国际标准分类号】:25_040_40
【页数】:26P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part10:AdvancedVideoCoding
【原文标准名称】:信息技术.音视对象的编码.第10部分:高保真视频编码
【标准号】:ISO/IEC14496-10-2004
【标准状态】:作废
【国别】:国际
【发布日期】:2004-10
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;代码表示;图形数据处理;功能;互动;编码;视频信号;多媒体;数据处理;编码(数据转换);图像处理;信息交换;信息技术;声信号;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:267P;A4
【正文语种】:英语