【英文标准名称】:Acoustics-Laboratorymeasurementproceduresforductedsilencersandair-terminalunits-Insertionloss,flownoiseandtotalpressureloss
【原文标准名称】:声学.管道消音器和气体终端设备的实验室测量步骤.插入损失、流动噪声和总压损失
【标准号】:BSENISO7235-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-09-08
【实施或试行日期】:2003-09-08
【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】:定义;试验;测量管道;声压级;声学;通风设备;阻尼(波);测量;噪声测量;测量技术;声学试验;管道;声学测量;流动;压力降;测量仪器;噪声;声级;发动机消音器;声强;符号;衰减常数;介入损耗;消声器;测量设备;通风道工程
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Airducts;Airflow;Attenuationconstant;Cables;Calibration;Canals;Checkingequipment;Classes;Clay;Corrrections;Damping;Definitions;Ducts;Enginesilencers;Equipment;Externalnoise;Fans;Flow;Graphicsymbols;Handling;Insertionloss;Laboratories;Laboratorytesting;Laboratorytests;Loudspeakers;Measurement;Measurementcircuits;Measuringducts;Measuringenvironment;Measuringequipment;Measuringinstruments;Measuringobjects;Measuringtechniques;Microphonearrangement;Microphones;Mineralwool;Noise;Noiseabatement;Noise(environmental);Noisemeasurements;Performancetests;Precision;Pressuredrops;Reflection;Reverberationrooms;Silencers;Sonictesting;Sound;Soundabsorption;Soundfields;Soundintensity;Soundlevel;Soundlevels;Soundmeters;Soundpressure;Soundpressurelevel;Soundsources;Structure-bornenoise;Symbols;Testfurnaces;Testresults;Testing;Testingset-ups;Transmittances;Ventilationductwork;Ventilationequipment;Walls
【摘要】:ThisInternationalStandardspecifiesmethodsfordetermining—theinsertionloss,infrequencybands,ofductedsilencerswithandwithoutairflow,—thesoundpowerlevel,infrequencybands,oftheflownoise(orregeneratedsound)generatedbyductedsilencers,—thetotalpressurelossofsilencerswithairflow,and—thetransmissionloss,infrequencybands,ofair-terminalunits.Themeasurementproceduresareintendedforlaboratorymeasurementsatambienttemperature.MeasurementsonsilencersinsituarespecifiedinISO11820.ItistobenotedthattheresultsdeterminedinalaboratoryaccordingtothisInternationalStandardwillnotnecessarilybethesameasthoseobtainedinsitu(installation),asdifferentsoundandflowfieldswillyielddifferentresults.Forexample,thepressurelosswillbelowerunderlaboratoryconditionsthaninsitu,butwillbecomparablebetweendifferentlaboratories.ThisInternationalStandardisapplicabletoalltypesofsilencerincludingsilencersforventilatingandair-conditioningsystems,airintakeandexhaustoffluegases,andsimilarapplications.Otherpassiveair-handlingdevices,suchasbends,air-terminalunitsorT-connectors,canalsobetestedusingthisInternationalStandard.ThisInternationalStandardisnotapplicabletoreactivesilencersusedformotorvehicles.NOTE1AnnexAspecifiesthesoundfieldexcitationequipment.AnnexBgivesrequirementsforthetransitionelement.AnnexCgivesdetailsofductwallsandlimitinginsertionloss.AnnexDspecifieshowtoconvertone-third-octavebandattentuationvaluestooctavebandvalues.AnnexEgivesrequirementsformeasurementsonlargeparallel-bafflesilencers.AnnexFspecifiesatestoflongitudinalattenuation.AnnexGgivesguidelinesonanechoicterminationsandAnnexHshowsexamplesofmeasurementarrangements.NOTE2Acoustictestingofair-terminaldevicesandfan-coilunitsistobecarriedoutasdescribedforair-terminalunits.NOTE3Soundpowermeasurementsonair-terminalunitsarespecifiedinISO5135.Measurementsofthepressurelossofair-terminalunitsaredescribedinEN12238,EN12239andEN12589.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_99
【页数】:62P.;A4
【正文语种】:英语
基本信息
标准名称: | 13%2甲4氯钠水剂 |
英文名称: | 13%MCPA-Na aqueous solution |
中标分类: |
化工 >>
化肥、农药 >>
农药 |
ICS分类: |
农业 >>
杀虫剂和其他农用化工产品 >>
除草剂
|
发布部门: | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
发布日期: | 2006-08-24 |
实施日期: | 2007-04-01 |
首发日期: | 2006-08-24 |
作废日期: | |
主管部门: | 中国石油和化学工业协会 |
提出单位: | 中国石油和化学工业 |
归口单位: | 全国农药标准化技术委员会(CSBTS/TC 133) |
起草单位: | 佳木斯黑龙农药化工股份有限公司 |
起草人: | 姜敏怡、李秀杰、董霞 |
出版社: | 中国标准出版社 |
出版日期: | 2007-04-01 |
页数: | 11页 |
计划单号: | 20050023-Q-606 |
适用范围
标准规定了13%2甲4氯钠水剂的要求、试验方法以及标志、标签、包装和储运,适用于由2甲4氯钠及生产中产生的杂质和水组成的13%2甲4氯钠水剂。
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所属分类: 化工 化肥 农药 农药 农业 杀虫剂和其他农用化工产品 除草剂