【英文标准名称】:Determinationofparticlesizedistribution-Single-particlelightinteractionmethods-Part1:Lightinteractionconsiderations
【原文标准名称】:粒度分布的测定单粒轻微互动法第1部分:轻微互动条件
【标准号】:ISO13323-1-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-11
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC24
【标准类型】:()
【标准水平】:()
【中文主题词】:导则;试验;光散射性;粒度测量;颗粒;粒度;粒度;定义
【英文主题词】:Definition;Definitions;Grainsize;Guidelines;Lightdivergence;Particlesize;Particlesizemeasurement;Particles;Testing
【摘要】:ThispartofISO13323providesguidanceontheselectionandoperationofdevicesthatdeterminethesizeandnumberofparticlesbymeasuringthephenomenaresultingfromlightinteractionwithindividualparticlespresentinagasorliquid.Thereportedparticlesizeisdefinedasanequivalentopticalsizebasedupontheresponseofthemeasurementsystemtocalibrationparticles.Thisdefinitionrequiresthattheinstrumentbecalibratedwithwell-definedmaterials.ThispartofISO13323appliestoparticlesranginginsizefromapproximately0,05μmindiametertothemillimetresizerange.Gas-borneparticlesinsizesfromapproximately0,05μmto20μmorsoaremeasuredprimarilybylight-scattering.Largerparticlescanbemeasuredusinglightextinctionsensors.Liquid-borneparticlesinthesizerangefromapproximately0,05μmtoafewmicrometresaremeasuredbylight-scattering.Lightextinctionisusedtomeasureliquid-borneparticlesinsizesfromapproximately1μmtothemillimetresizerange.Thesizerangecapabilityofanysingleinstrumentisusuallyapproximately100:1.Particleslargerthanapproximately100timesthesizeofthesmallestparticlethatcanbemeasuredwithgoodsizingresolutionarereportedas"greaterthanorequaltothethresholdsize"ofthelargestsizechanneloftheinstrument.TheresponsethatisconsideredinthispartofISO13323isthechangeincollectedlightfluxresultingfromthepresenceofasingle-particlewithintheopticalsensingzoneofthemeasuringinstrument.Forthisreason,instruments,whichrelyuponopticalinteractiontoproducedataonlyindicatingtheextentofparticlemotion,arenotdiscussedhere.NOTEInstrumentsnotdiscussedhereincludedevicessuchasaerodynamicparticlesizersorphaseDopplerparticleanalysers,whichproducedataprimarilydependentupontheaerodynamicsizeoftheparticles.Thoseinstrumenttypesdonotusetheextentoflightinteractiontomeasuretheparticlesize.Theparticlesizeisdefinedbyresidencetimeduringmotionthroughadefineddistanceorbyparticlevelocity.Theseinstrumentsreportaparticlesizethatisrelatedtofluid-dynamicmeasurements.
【中国标准分类号】:A42
【国际标准分类号】:19_120
【页数】:15P;A4
【正文语种】:英语