【英文标准名称】:Industrial-processcontrolvalves-Part8-1:Noiseconsiderations-Laboratorymeasurementofnoisegeneratedbyaerodynamicflowthroughcontrolvalves
【原文标准名称】:工业过程控制阀.第8-1部分:噪声问题.空气动力流流经控制阀产生噪声的实验室测量
【标准号】:BSEN60534-8-1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2006-02-01
【实施或试行日期】:2006-02-01
【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】:声学测量;空气动力流;空气动力学;空气噪声;控制阀;校正装置;定义;数字的;数字工程;尺寸选定;方向控制阀;电气工程;辐射;流量;流量率;流体工程;气体流动;气阀;实验室;实验室试验;测量;空气噪声测量;测量技术;噪声;燥声特性;噪声排放;噪声测量;管道;过程控制;过程测量和控制技术;额定值;声音;声级;声压级;声音传播;测试;阀门
【英文主题词】:Acousticmeasurement;Aerodynamicflow;Aerodynamics;Airbornenoise;Controlvalves;Correctingunits;Definition;Definitions;Digital;Digitalengineering;Dimensioning;Direction-controlvalves;Electricalengineering;Emissions;Flowcapacity;Flowrates;Fluidengineering;Gasflow;Gasvalves;Laboratories;Laboratorytesting;Laboratorytests;Measurement;Measurementofairbornenoise;Measuringtechniques;Noise;Noisecharacteristic;Noiseemissions;Noisemeasurements;Pipelines;Processcontrol;Processmeasuringandcontroltechnology;Ratings;Sound;Soundlevel;Soundpressurelevel;Soundpropagation;Testing;Valves
【摘要】:ThispartofIEC60534-8definesequipment,methods,andproceduresforobtaininglaboratorymeasurementsofsoundpressurelevelsradiatedbycontrolvalvesand/orassociatedpipingconfigurations,includingfixedrestrictions,throughwhichcompressiblefluidsarepassing.Controlvalvesdischargingtoatmosphereareexcludedfromthisstandard.MethodAisauniformmethodofmeasuringtheradiatednoisefromthevalveandassociatedtestpipingandallowsacomparisonofvariousmeasuringresultswhichisbeneficialforbothuserandmanufacturer.Thenoisecriteriaareexpressedbydeterminingthesoundpressurelevelofthevalveunderconsideration.MethodBisaprocedureformeasuringthesoundpressurelevelswithinpipesystemsupstreamanddownstreamofthevalveunderfixedoperatingconditions.Sinceinaccuraciesduetothepipetransmissionareeliminated,thismethodispreferredforevaluationoftheacousticalcharacteristicofvalves.Thenoisecharacteristicstobedeterminedareusefulforthefollowingreasons:a)tocomparetheperformanceofdifferentvalves;b)toplanmeasuresfornoiseabatement;c)todetermineacousticalcharacteristicsofvalvesandvalveassemblies;d)toenablepropersizingofsoundabsorbers;e)todeterminepossibleadverseeffectsonultra-sonicflowmetermeasurements.
【中国标准分类号】:N16
【国际标准分类号】:23_060_40
【页数】:20P.;A4
【正文语种】:英语


【英文标准名称】:Telecommunications–IntegratedServicesDigitalNetwork(ISDN)Management–BasicRatePhysicalLayer
【原文标准名称】:电信.综合服务数字网络管理(ISDN).基础速率物理层
【标准号】:ANSIT1.216-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998-04-23
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ATIS
【标准类型】:()
【标准水平】:()
【中文主题词】:综合业务数字网;电信;远程通信;通信;电信
【英文主题词】:ISDN;Telecommunication;Telecommunications
【摘要】:ThepurposeofthisstandardistoestablishrequiredcapabilitiesforthemaintenanceandoperationsneededforthebasicratephysicallayerassociatedwithaccesstoIntegratedServicesdigitalNetworks(ISDNs).Thisstandardestablishesneededmainte
【中国标准分类号】:M11
【国际标准分类号】:33_080
【页数】:
【正文语种】:英语