ISO121412002

INTERNATIONALSTANDARDISO12141Firstedition2002-11-01ReferencenumberISO12141:2002(E)©ISO2002Stationarysourceemissions—Determinationofmassconcentrationofparticulatematter(dust)atlowconcentrations—ManualgravimetricmethodÉmissionsdesourcesfixes—Déterminationd'unefaibleconcentrationenmassedematièresparticulaires(poussières)—MéthodegravimétriquemanuelleCopyrightInternationalOrganizationforStandardizationProvidedbyIHSunderlicensewithISONoreproductionornetworkingpermittedwithoutlicensefromIHS--`,`,``,`,,,`,,`,,,`,``,````,`,-`-`,,`,,`,`,,`---ISO12141:2002(E)ii©ISO2002–AllrightsreservedPDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobe'slicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobe'slicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.©ISO2002Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smemberbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56[e-mail]`,`,``,`,,,`,,`,,,`,``,````,`,-`-`,,`,,`,`,,`---ISO12141:2002(E)©ISO2002–AllrightsreservediiiContentsPage1Scope...............................................................................................................................................................12Normativereferences.......................................................................................................................................13Termsanddefinitions........................................................................................................................................14Principle............................................................................................................................................................45Samplingplaneandsamplingpoints................................................................................................................56Apparatusandmaterials(seesummaryannexE)...........................................................................................77Calculationofnozzlediametertoobtainweighablequantitiesofdust...........................................................138Weighingprocedure.......................................................................................................................................149Samplingprocedure.......................................................................................................................................1610Thermalbehaviourofdusts..........................................................................................................................1811Validationofresults......................................................................................................................................2012Calculations..................................................................................................................................................2113Performancecharacteristicsofthemethod..................................................................................................2214Testreport....................................................................................................................................................23AnnexesARequirementsrelatedtotheworkingplatform................................................................................................25BDeterminationofflowdirectionwithPitottubes..............................................................................................26CDeterminationofpositionsofsamplingpointsincircularandretangularducts..............................................27DExamplesofsuitableaccessportsforsamplingequipment...........................................................................31EProvenentrynozzledesigns...........................................................................................................................33FSummaryofapparatusrequirements..............................................................................................................35GSamplingvolume,flowrateandduration...............................