DIN EN 12402-1999 铅和铅合金.分析取样方法
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【英文标准名称】:Leadandleadalloys-Methodsofsamplingforanalysis;GermanversionEN12402:1999
【原文标准名称】:铅和铅合金.分析取样方法
【标准号】:DINEN12402-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;OES;材料试验;铅;定义;试样制备;铅合金;发射光谱仪;棒材;实验室试验;有色金属;熔化;抽样方法
【英文主题词】:Bars(materials);Chemicalanalysisandtesting;Definition;Definitions;Emissionspectrography;Laboratorytests;Lead;Leadalloys;Materialstesting;Melting;Non-ferrousmetals;OES;Samplingmethods;Specimenpreparation
【摘要】:ThedocumentspecifiesthemethodsofsamplingofleadandleadalloysforthepurposeofchemicalanalysisorforthepurposeofspectrometricanalysisbyOpticalEmissionSpectrometry(OES),withsparkexcitation.#,,#
【中国标准分类号】:H62
【国际标准分类号】:77_120_60
【页数】:10P.;A4
【正文语种】:德语
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Precisionmethodsforreverberationrooms
【原文标准名称】:声学声压法测定噪声源声功率级混响室精密法
【标准号】:ISO3741-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-08
【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】:混响;测定;声学试验;声级;声学;试验;噪声(环境的);声源;声强;响度
【英文主题词】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoiseemitted;Calibration;Clay;Concentration;Definitions;Determination;Earprotectors;Environment;Filters;Frequencies;Handling;Hearingabilitytests;Humidity;Indications;Information;Loudnesslevels;Loudspeakers;Machines;Mathematicalcalculations;Measurement;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringrooms;Measuringtechniques;Microphones;Noise;Noise(environmental);Noisemeasurements;Noisesources;Observation;Operatingconditions;Position;Powerlevels;Precision;Reverberation;Reverberationroommethod;Reverberationrooms;Rooms;Safetyofmachinery;Sound;Soundabsorption;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundpressure;Soundsources;Specification(approval);Standarddeviation;Surfaces;Temperature;Testing;Tests;Volume(sound)
【摘要】:1ThisInternationalStandardspecifiesadirectmethodandacomparisonmethodfordeterminingthesoundpowerlevelthatwouldbeproducedbyasourceoperatinginanenvironmentatstandardmeteorologicalconditionscorrespondingtoacharacteristicimpedanceofρc=400N·s/m(whereρisthedensityofairandcisthespeedofsound).Itspecifiestestroomrequirements,sourcelocationandgeneralrulesforoperatingconditions,instrumentationandtechniquesforobtaininganestimateofmean-squaresoundpressurelevelsfromwhichthesoundpowerlevelsofthesourceinoctaveorone-third-octavebandsarecalculatedwithagrade1accuracy.Thequantitiestobemeasuredaretime-averagedsoundpressurelevelsinfrequencybands.Thequantitiestobedeterminedaresoundpowerlevels,A-weightedandinfrequencybands.Otherquantities,whichareoptional,aresoundpowerlevelswithotherfrequencyweightingscalculatedfromthemeasurementsinfrequencybands.Thisstandarddoesnotprovidethemeanstodeterminedirectivityandtemporalvariationofsoundfromasource.Ingeneral,thefrequencyrangeofinterestincludestheone-third-octavebandswithmidbandfrequenciesfrom100Hzto10000Hz.GuidelinesfortheapplicationofthespecifiedmethodsinanextendedfrequencyrangeinrespecttolowerfrequenciesaregiveninannexC.ThisInternationalStandardisnotapplicabletofrequencyrangesabovethe10000Hzone-third-octaveband.ForhigherfrequenciestheuseofmethodsgiveninISO9295isrecommended.2ThemethodspecifiedinthisInternationalStandardissuitableforsteadynoisewithbroad-band,narrow-bandanddiscrete-frequencycomponentsasdescribedinISO12001.Thenoisemaybeemittedfromadevice,machine,componentorsub-assembly.ThisInternationalStandardisapplicabletonoisesourceswithvolumeswhicharepreferablynotgreaterthan2%ofthevolumeofthereverberationroomusedforthetest.Forsourceswithvolumesgreaterthan2%oftheroomvolume,thestandarddeviationsgivenbyTable2couldbeexceeded.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:32P;A4
【正文语种】:英语
【英文标准名称】:SmokeDetectorsforDuctApplication
【原文标准名称】:导管烟雾探测器
【标准号】:ANSI/UL268Aa-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Airductingsystems;Airducts;Air-conditioningsystems;Blowers;Definitions;Electricalequipment;Firedampers;Firesafety;Sensors;Smokedetectors;Tests
【摘要】:RevisiontoproposaldatedSeptember12,2008
【中国标准分类号】:C81
【国际标准分类号】:13_220_20
【页数】:
【正文语种】:英语
