【astm標準】d 7224 - 14

1、Designation:D7224?14AnAmericanNationalStardStardTestMethodfDeterminingWaterSeparationacteristicsofKerosineTypeAviationTurbineFuelsContainingAdditivesbyPtableSeparometer1ThisstardisissuedunderthefixeddesignationD7224thenu

2、mberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevis

3、ionreapproval.INTRODUCTIONThistestmethodwasdevelopedtosatisfythreeobjectives:(1)DevelopatestmethodthatwouldrespondinthesamemannerasTestMethodD3948tostrongsurfactantsbutnotgivelowmicroseparometer(MSEP)ratingstofuelscontai

4、ningweaksurfactants(additives)thatdonotdegradetheperfmanceofcommercialfilterseparatelements(2)Usefiltermediainthecoalescertestthatwouldberepresentativeofthefiltrationmediaincommercialfilterseparatelements(3)Improvethepre

5、cisionofthetestmethodcomparedtoTestMethodD3948.Thistestmethodwasdevelopedusingmaterialthatisrepresentativeofcoalescingmaterialscurrentlyusedincommercialfilterseparatelements.ThefiberglasscoalescingmaterialusedinTestMetho

6、dD3948wassuitablefcoalescingfiltersinusewhenthattestmethodwasdevelopedbutdevelopmentsincoalescingelementsintheinterveningyearshaveresultedinimprovedmaterialsthatarenotaffectedbyweaksurfactants.TestMethodD3948yieldslowres

7、ultsonsomeadditizedfuelsthatdonotaffecttheperfmanceoffilterseparats(coalescingfilters)inactualservice.Sincethistestmethodwasdevelopedwithmaterialthatisrepresentativeofthemediausedincurrentfilterseparatstheresultsbythiste

8、stmethodaremerelevanttoperfmanceincurrentfilterseparats.1.Scope1.1Thistestmethodcoversarapidptablemeansffieldlabatyusetoratetheabilityofkerosinetypeaviationturbinefuelsbothneatthosecontainingadditivestoreleaseentrainedem

9、ulsifiedwaterwhenpassedthroughfiberglasscoalescingmaterial.1.1.1Thistestmethodisapplicabletokerosinetypeaviationturbinefuelsincluding:JetAJetA1(asdescribedinSpecificationD1655)JP5JP7JP8JP8100.(SeeSection6.)1.2Thevaluesst

10、atedinSIunitsaretoberegardedasthestard.Thevaluesgiveninparenthesesarefinfmationonly.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishapp

11、ropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.Fspecificwarningstatementssee8.2–8.5.2.ReferencedDocuments2.1ASTMStards:2D1655SpecificationfAviationTurbineFuelsD2550MethodofTestfWaterS

12、eparationacteristicsofAviationTurbineFuels(Withdrawn1989)3D3602TestMethodfWaterSeparationacteristicsofAviationTurbineFuels(Withdrawn1994)3D3948TestMethodfDeterminingWaterSeparationacteristicsofAviationTurbineFuelsbyPtabl

13、eSeparometerD4306PracticefAviationFuelSampleContainersfTestsAffectedbyTraceContaminationD7261TestMethodfDeterminingWaterSeparationacteristicsofDieselFuelsbyPtableSeparometer1ThistestmethodisunderthejurisdictionofASTMComm

14、itteeD02onPetroleumProductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.J0.05onFuelCleanliness.CurrenteditionapprovedDec.12014.PublishedJanuary2015.iginallyapprovedin2005.Lastpreviouseditionapprovedin2

15、013asD7224–13.DOI:10.1520D722414.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.3Thelastapproved

16、versionofthishisticalstardisreferencedonwww.astm.g.ASummaryofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1goodprobabilitythatlighttr

17、ansmittancewasreducedbymaterialtypicallywatercontainedinthefuelthatwasusedtosetthe100referencelevel.Duringthecoalescingptionofthetestthecontaminatingmaterialaswellasthe50L61Lofdistilledwaterwassubsequentlyremovedduringth

18、isptionofthetest.Thustheprocessedfuelhadahigherlighttransmittancethanthefuelsampleusedtoobtainthe100referencelevelresultinginthefinalratingmeasuringinexcessof100.6.Interferences6.1Anysuspendedparticleswhethersolidwaterle

19、tshazeinafuelsamplewillinterferewiththistestmethodwhichutilizeslighttransmissionofafuelsampleafteremulsificationwithwatersubsequentcoalescence.7.Apparatus7.1MicroSeparometerInstrument7isusedtoperfmthetest.Theunitiscomple

20、telyptableselfcontainedcapableofoperatingonan(optional)internalregeablebatterypackbeingconnectedtoanacpowersourceusingpowercdswhichareavailablefvariousvoltages.Connectiontoanacpowersourcewillprovidepowertotheuniteffectba

21、tteryrege.Thepowercdstestaccessiesoperatsmanualcanbepackedinthecoverofthelockablecase.NOTE2—AnextensivestudywasperfmedtoverifythattheMarkXMicroSeparometerinstrumentgivesequivalentresultstotheMarkVDeluxeMicroSeparometerin

22、strument.SeeResearchReptRR:D021647.8NOTE3—TheMarkXhasauniversalpowersupplyrequiresonlyonepowercdascomparedtotheMarkVDeluxethatrequiresindividualpowercdsfdifferentvoltages.7.1.1ReviewtheOperatingManualoftheMicroSeparomete

23、rinstrumentthatisfurnishedwitheachunit(isalsoavailablefromthemanufacturer’swebsite)foperatinginstructions.Theinstrumentisnotfieldrepairable.Alsonotethatthisinstrumentisdesignedtoperfmanumberofdifferentfunctionsinaddition

24、tothisspecifictestmethod.7.1.2TheMicroSeparometerMarkVDeluxeMarkXinstrumentsassociatedcontrolpanelsareshowninFig.1Fig.2respectively.Theemulsifierisontherightsideoftheraisedpanelthesyringedrivemechanismisontheleftside.The

25、controlpanelcontainingtheoperatingcontrolsismountedonthefixedpanelintheleftsideofthecase.Table1liststhemanualaudiooperatingacteristicsoftheinstrument.7.1.3Allofthecontrolsarelocatedinapushbuttonarrayonthecontrolpanel.The

26、pushbuttonsilluminatewhendepressedthusindicatingoperationalstatus.Acircuitbreakerlocatedonthecontrolpanelprovidesprotectionftheacpowercircuit.7.1.3.1TheMarkXhasanLCDdisplayonthecontrolpanelthatprovidesinfmationtotheopera

27、tduringthetest.TheinfmationincludesteststatusanerrcodethatdefinesamalfunctionintheMicroSeparometerinstrument.7.1.4Theturbidimeterislocatedunderthemaincontrolpanelconsistsofawellinwhichthesamplevialisplaced(inaspecifiedie

28、ntation)alightsourceaphotocell.7.1.5BydepressingtheONpushbuttontheelectroniccircuitsareenergized.TheONpushbuttonpulsesonoffwhentheinstrumentsarebeingoperatedbyanacsourceremainsconstantlyonwhenthebattery(dc)packisused.The

29、letteredpushbuttonswillsequentiallyilluminateindicatingREADYoperationalstatus.NOTE4—Ofthelettered(AG)pushbuttonsonthecontrolpaneloftheMarkVDeluxeonlytheApushbuttonisapplicabletothistestmethod.Ofthelettered(JetA–Diesel)pu

30、shbuttonsonthecontrolpaneloftheMarkXonlytheJetApushbuttonisapplicabletothistestmethod.7.1.6TheRESETpushbuttoncanbedepressedatanytimetocancelthetestinprogressrestetheprogramtotheinitialstartmode.Theletteredpushbuttonscomm

31、encetosequentiallyilluminatethusindicatingaREADYoperationalstatusenablingtestmodeion.7.2MarkVOperation:7.2.1DepresstheApushbuttontotestModeA.ThedepressedpushbuttontheSTARTpushbuttonwillilluminate.7.2.2TheSTARTpushbuttonw

32、hendepressedinitiallyinitiatestheCLEANcyclecausingthesyringedrivemechanismtotraveltotheUPpositiontheemulsifiermottooperatefthecleaningoperation.7ThesolesourceofsupplyoftheapparatustheModel1140MicroSeparometerMarkVDeluxeM

33、arkXinstrumentsknowntothecommitteeatthistimeisEMCEEElectronicsInc.520CypressAve.VeniceFL34285www.emcee.IfyouareawareofalternativesupplierspleaseprovidethisinfmationtoASTMInternationalHeadquarters.Yourcommentswillreceivec

34、arefulconsiderationatameetingoftheresponsibletechnicalcommittee1whichyoumayattend.8SupptingdatahavebeenfiledatASTMInternationalHeadquartersmaybeobtainedbyrequestingResearchReptRR:D021647.FIG.1MicroSeparometerMarkVDeluxeA