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ASTM D4052-2009 数字密度计测定液体密度,相对密度和API度的标准试验方法

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【英文标准名称】:StandardTestMethodforDensity,RelativeDensity,andAPIGravityofLiquidsbyDigitalDensityMeter
【原文标准名称】:数字密度计测定液体密度,相对密度和API度的标准试验方法
【标准号】:ASTMD4052-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D02.04.0D
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:APIGravity;density;digitaldensityanalyzer;petroleumdistillates;petroleumproducts;relativedensity;Density--petroleumproducts;Digitalanalysis;Distillatefuels;NumberCode17.060(Measurementofvolume,mass,density,viscosity)
【摘要】:Densityisafundamentalphysicalpropertythatcanbeusedinconjunctionwithotherpropertiestocharacterizeboththelightandheavyfractionsofpetroleumandpetroleumproducts.Determinationofthedensityorrelativedensityofpetroleumanditsproductsisnecessaryfortheconversionofmeasuredvolumestovolumesatthestandardtemperatureof15x00B0;C.1.1Thistestmethodcoversthedeterminationofthedensity,relativedensity,andAPIGravityofpetroleumdistillatesandviscousoilsthatcanbehandledinanormalfashionasliquidsatthetemperatureoftest,utilizingeithermanualorautomatedsampleinjectionequipment.Itsapplicationisrestrictedtoliquidswithtotalvaporpressures(seeTestMethodD5191)typicallybelow100kPaandviscosities(seeTestMethodD445orD7042)typicallybelowabout15000mm2/satthetemperatureoftest.Thetotalvaporpressurelimitationhowevercanbeextendedto>100kPaprovidedthatitisfirstascertainedthatnobubblesformintheU-shaped,oscillatingtube,whichcanaffectthedensitydetermination.Someexamplesofproductsthatmaybetestedbythisprocedureinclude:gasolineandgasoline-oxygenateblends,diesel,jet,basestocks,waxes,andlubricatingoils.1.1.1Waxeswerenotincludedinthe1999interlaboratorystudy(ILS)samplesetthatwasusedtodeterminethecurrentprecisionstatementsofthemethod,sinceallsamplesevaluatedatthetimewereanalyzedatatesttemperatureof15x00BA;C.Waxsamplesrequireatemperaturecelloperatedatelevatedtemperaturesnecessarytoensurealiquidtestspecimenisintroducedforanalysis.Consultinstrumentmanufacturerinstructionsforappropriateguidanceandprecautionswhenattemptingtoanalyzewaxsampletypes.RefertothePrecisionandBiassectionofthemethodandNote6formoredetailedinformationaboutthe1999ILSthatwasconducted.1.2Incasesofdispute,therefereemethodistheonewheresamplesareintroducedmanuallyasin6.3or6.4,asappropriateforsampletype.1.3Thistestmethodshouldnotbeappliedtosamplessodarkincolorthattheabsenceofairbubblesinthesamplecellcannotbeestablishedwithcertainty.ForthedeterminationofdensityincrudeoilsamplesuseTestMethodD5002.1.4ThevaluesstatedinSIunitsareregardedasthestandard,unlessstatedotherwise,suchasthex201C;torrx201D;unitsofpressureinEq1.Theacceptedunitsofmeasurefordensityaregramspermillilitre(g/mL)orkilogramspercubicmetre(kg/m3).1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,see7.4,7.5,and10.3.
【中国标准分类号】:N51
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语


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MIL-C-27072/47A, MILITARY SPECIFICATION SHEET CABLE, SPECIAL PURPOSE, ELECTRICAL, MULTI CONDUCTOR, (12 SHIELDED PAIRS) AND SINGLE SHIELDED M27072/47MAMA (24 SEPT 1987)., The requirements for acquiring the cable described herein shall consist of this specification and the latest issue of MIl-C-27072.Product Code:SAE ARP1612
Title:Polyamide Printed Circuit Boards Fabrication Of
Issuing Committee:Ams P17 Composite Materials Committee
Scope:This document describes the materials, equipment, and processing techniques utilized in the fabrication of polyamide printed wiring boards. Included are recommendations for both double-sided and multi-layer boards. The processes described herein are the result of extensive evaluation and manufacturing experience. These recommendations reflect procedures that have proven effective in producing low-cost and reliable printed wiring boards.