Designation:D1070−03(Reapproved2010)StandardTestMethodsforRelativeDensityofGaseousFuels1ThisstandardisissuedunderthefixeddesignationD1070;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedeterminationofrelativedensityofgaseousfuels,includingliquefiedpetroleumgases,inthegaseousstateatnormaltemperaturesandpressures.Thetestmethodsspecifiedaresufficientlyvariedinnaturesothatoneormoremaybeusedforlaboratory,control,reference,gasmeasurement,orinfact,foranypurposeinwhichitisdesiredtoknowtherelativedensityofgasorgasesascomparedtothedensityofdryairatthesametemperatureandpressure.1.2Theproceduresappearinthefollowingsections:SectionMethodA,Ac-MeGravityBalance7–9MethodB,RanarexRecordingandIndicatingGravitometer10-11MethodC,UGCGravitometer12–14NOTE1—Thetestmethodsandapparatusdescribedhereinarerepre-sentativeofmethodsandapparatususedbroadlyinindustry.Manufactur-er’sinstructionsforspecificmodelsshouldbeconsultedforfurtherdetailsandassupplementstotheinformationpresentedhere.Inadditiontoinstrumentationdescribedbelowadditionalequallyaccurateandsatisfac-toryinstrumentsmaybeavailable.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D5503PracticeforNaturalGasSample-HandlingandCon-ditioningSystemsforPipelineInstrumentation23.Terminology3.1Definitions:3.1.1density—massperunitofvolumeofthefuelgasorairbeingconsidered.3.1.2gaseousfuel—mat...
