DIN 68330-1976 胶合板坯.术语

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【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-ShortRangeDevices(SRD)-EquipmentforDetectionandMovement-TanksLevelProbingRadar(TLPR)operatinginthefrequencybands5,8GHz,10GHz,25GHz,61GHzand77GHz-Part2:Harmo
【原文标准名称】:电磁兼容性和无线电频谱情况(ERM).短距离设备(SRD).检测和移动设备.在频带为5,8GHz,10GHz,25GHz,61GHz和77GHz范围内运行的探测雷达液舱液位(TLPR).第2部分:伤害
【标准号】:NFZ82-372-2-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-06-01
【实施或试行日期】:2011-06-11
【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】:
【英文主题词】:Audioequipment;Dataacquisition;Electricalengineering;Electromagneticcompatibility;EMC;Level;Measuringtechniques;Radar;Radioplants;Ratings;Shortdistances;Soundings;Tanks(containers);Telecommunication;Telecommunications;Testing;Testingconditions
【摘要】:
【中国标准分类号】:M36;L06
【国际标准分类号】:33_060_99
【页数】:15P;A4
【正文语种】:其他


【英文标准名称】:Industrial-processcontrolvalves.Noiseconsiderations.Controlvalveaerodynamicnoisepredictionmethod
【原文标准名称】:工业过程控制阀.噪声问题.控制阀的气动噪声预测法
【标准号】:BSEN60534-8-3-2011
【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】:Acousticmeasurement;Aerodynamicflow;Airbornenoise;Controlvalves;Correctingunits;Definitions;Direction-controlvalves;Electricalengineering;Fluidengineering;Laboratorytesting;Laboratorytests;Liquidflow;Mathematicalcalculations;Measurement;Measurementofairbornenoise;Measuringtechniques;Methodsofcalculation;Noise;Noiseemissions;Noisemeasurements;Pipelines;Processcontrol;Processmeasuringandcontroltechnology;Soundpressurelevel;Testing;Valves
【摘要】:ThispartofIEC60534establishesatheoreticalmethodtopredicttheexternalsoundpressurelevelgeneratedinacontrolvalveandwithinadjacentpipeexpandersbytheflowofcompressiblefluids.Thismethodconsidersonlysingle-phasedrygasesandvapoursandisbasedontheperfectgaslaws.Thisstandardaddressesonlythenoisegeneratedbyaerodynamicprocessesinvalvesandintheconnectedpiping.Itdoesnotconsideranynoisegeneratedbyreflectionsfromexternalsurfacesorinternallybypipefittings,mechanicalvibrations,unstableflowpatternsandotherunpredictablebehaviour.Itisassumedthatthedownstreampipingisstraightforalengthofatleast2mfromthepointwherethenoisemeasurementismade.Thismethodisvalidonlyforsteelandsteelalloypipes(seeEquations(21)and(23)in5.5).Themethodisapplicabletothefollowingsingle-stagevalves:globe(straightpatternandanglepattern),butterfly,rotaryplug(eccentric,spherical),ball,andvalveswithcagetrims.SpecificallyexcludedarethefullboreballvalveswheretheproductFpCexceeds50%oftheratedflowcoefficient.Forlimitationsonspeciallownoisetrimsnotcoveredbythisstandard,seeClause8.WhentheMachnumberinthevalveoutletexceeds0,3forstandardtrimor0,2forlownoisetrim,theprocedureinClause7isusedTheMachnumberlimitsinthisstandardareasfollows:
【中国标准分类号】:J16
【国际标准分类号】:17_140_20;23_060_40;25_040_40
【页数】:52P.;A4
【正文语种】:英语