【英文标准名称】:StandardPracticeforComparingParticleSizeintheUseofAlternativeTypesofParticleCounters
【原文标准名称】:替换型粒子计数器使用过程中粒度比较的标准实施规范
【标准号】:ASTMF660-1983(2007)
【标准状态】:现行
【国别】:
【发布日期】:1983
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:材料;试验;实验室器皿;粒度;计数器;统计学;试验设备;比较;颗粒
【英文主题词】:particlecounters;Strokesdiameter
【摘要】:Thispracticesupportstestmethodsdesignedtoevaluatetheperformanceoffluid-filtermedia,forexample,PracticeF796whereinparticlesizedistributionsareaddressedandatthesametimethispracticeprovidesameanstocomparesizemeasurementsobtainedfromseveraldifferenttypesofinstruments.Thefactorforconvertingonekindofdiameterscaletoanotherisonlyvalidforthespecifictestparticlesstudied.1.1Thispracticeprovidesaprocedureforcomparingthesizesofnonsphericalparticlesinatestsampledeterminedwithdifferenttypesofautomaticparticlecounters,whichoperateondifferentmeasuringprinciples.1.2Ascalefactorisobtainedbywhich,intheexaminationofagivenpowder,thesizescaleofoneinstrumentmaybemultipliedtoagreewiththesizescaleofanother.1.3Thepracticeconsidersrigidparticles,freeoffibers,ofthekindusedinstudiesoffiltration,suchas:commerciallyavailableteststandardsofquartzoralumina,orflyash,orsomepowderedchemicalreagent,suchasironoxideorcalciumsulfate.1.4Threekindsofautomaticparticlecountersareconsidered:1.4.1Imageanalyzers,whichviewstationaryparticlesunderthemicroscopeand,inthispractice,measurethelongestend-to-enddistanceofanindividualparticle.1.4.2Opticalcounters,whichmeasuretheareaofashadowcastbyaparticleasitpassesbyawindow;and1.4.3Electricalresistancecounters,whichmeasurethevolumeofaparticleasitpassesthroughanorificeinanelectricallyconductiveliquid.1.5Thispracticealsoconsiderstheuseofinstrumentsthatprovidesedimentationanalyses,whichistosayprovidemeasuresoftheparticlemassdistributionasafunctionofStokesdiameter.ThepracticeprovidesawaytoconvertmassdistributionintonumberdistributionsothatthemeaningofStokesdiametercanberelatedtothediametermeasuredbytheinstrumentsin1.4.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F80
【国际标准分类号】:19_120
【页数】:5P.;A4
【正文语种】: