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【英文标准名称】:Acoustics-Laboratorymeasurementproceduresforductedsilencersandair-terminalunits-Insertionloss,flownoiseandtotalpressureloss
【原文标准名称】:声学.管道消音器和空气界面装置的实验室测量步骤.插入损失、流动噪声和总压损失
【标准号】:ISO7235-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:阻尼(波);实验室;测量技术;声学;性能试验;声强;管道;运河;定义;试验;测量;声压级;测量仪器;符号;声学试验;流动;通风设备;声级;试验炉;压力降;声学测量;噪声;消声器;衰减常数;介入损耗;测量设备;通风道工程;测量管道;噪声测量;发动机消音器
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Airducts;Airflow;Attenuationconstant;Cables;Calibration;Canals;Checkingequipment;Classes;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】:91_120_20
【页数】:49P;A4
【正文语种】:英语


【英文标准名称】:Pigmentsandextenders;methodsofdispersionforassessmentofdispersioncharacteristics;part6:dispersionusingatriple-rollmill
【原文标准名称】:颜料和体质颜料.评定分散性的分散方法.第6部分:用三辕研磨机分散
【标准号】:ISO8780-6-1990
【标准状态】:现行
【国别】:国际
【发布日期】:1990-11
【实施或试行日期】:1990-11-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC35
【标准类型】:()
【标准水平】:()
【中文主题词】:扩散;分散(化工);光色散率;轧钢机;涂料;颜料;易扩散性;扩散法;三滚磨;评定;分散作用(化学);分散;填充剂;试验;粘合剂;材料试验
【英文主题词】:Bindingagents;Dispersing;Dispersing(chemicaltechnology);Dispersion;Dispersions(chemical);Easeofdispersionbehaviours;Evaluations;Extenders;Materialstesting;Methodsofdispersion;Opticaldispersivepower;Paints;Pigments;Rollingmills;Testing;Tripple-rollmills
【摘要】:Theresultsobtainedpermitconclusionstobedrawnastothebehaviouroftheproductstestedwhendispersedusingcorrespondingproductionmachinery.ThispartisforuseinconjunctionwiththemethodsofassessmentdescribedinISO8781,usinganagreedbindersystemofhigh-viscositymillbases.Itisrecommendedtocarryoutthedispersionproceduresforthetestpigmentandagreedreferencepigmentatthesametemperature.
【中国标准分类号】:G53
【国际标准分类号】:87_060_10
【页数】:4P.;A4
【正文语种】:英语