MIL-L-2710B (NOTICE 1)
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来源:标准资料网
MIL-L-2710B (NOTICE 1), MILITARY SPECIFICATION: LINKS, CHAIN, DETACHABLE, REGULAR AND PEAR-SHAPED (01 OCT 1997) [S/S BY MIL-DTL-2710C]., MIL-L-271OB is inactive for new design and is no longer used except for replacement purposes.
【英文标准名称】:StandardPracticeforCalculatingCarbon-TypeCompositionofInsulatingOilsofPetroleumOrigin
【原文标准名称】:计算石油制绝缘油的碳类组分的标准试验方法
【标准号】:ASTMD2140-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D27.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:carbontype;composition;electricaloils;mineraloils;oils;Carbon-typecomposition;Compositionanalysis--petroleumproducts;Electricalinsulatingoils;Refractiveindex;Refractivityintercept;Viscosity-gravityconstant(VGC)
【摘要】:Theprimarypurposeofthispracticeistocharacterizethecarbon-typecompositionofanoil.Itisalsoapplicableinobservingtheeffectonoilconstitution,ofvariousrefiningprocessessuchashydrotreating,solventextraction,andsoforth.Ithassecondaryapplicationinrelatingthechemicalnatureofanoiltootherphenomenathathavebeendemonstratedtoberelatedtooilcomposition.Resultsobtainedbythispracticearesimilarto,butnotidenticalwith,resultsobtainedfromTestMethodD3238.TherelationshipbetweenthetwoandtheequationsusedinderivingFig.1arediscussedintheliterature.Althoughthispracticetendstogiveconsistentresults,itmaynotcomparewithdirectmeasurementtestmethodssuchasTestMethodD2007.1.1Thispracticemaybeusedtodeterminethecarbon-typecompositionofmineralinsulatingoilsbycorrelationwithbasicphysicalproperties.Forroutineanalyticalpurposesiteliminatesthenecessityforcomplexfractionalseparationandpurificationprocedures.Thepracticeisapplicabletooilshavingaveragemolecularweightsfrom200toabove600,and0to50aromaticcarbonatoms.1.2Carbon-typecompositionisexpressedaspercentageofaromaticcarbons,percentageofnaphtheniccarbons,andpercentageofparaffiniccarbons.Thesevaluescanbeobtainedfromthecorrelationchart,Fig.1,ifboththeviscosity-gravityconstant(VGC)andrefractivityintercept(ri)oftheoilareknown.Viscosity,densityandrelativedensity(specificgravity),andrefractiveindexaretheonlyexperimentaldatarequiredforuseofthistestmethod.1.3Thispracticeisusefulfordeterminingthecarbon-typecompositionofelectricalinsulatingoilsofthetypescommonlyusedinelectricpowertransformersandtransmissioncables.Itisprimarilyintendedforusewithnewoils,eitherinhibitedoruninhibited.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.FIG.1CorrelationChartforDetermining%CA,%CN,and%CP
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:EYE-PROTECTION.OPTICALTESTMETHODSFOREYE-PROTECTORS.
【原文标准名称】:预防、防护与安全.眼的保护.眼睛保护装置的光学试验方法
【标准号】:NFS77-102-1972
【标准状态】:作废
【国别】:法国
【发布日期】:1972-12
【实施或试行日期】:1972-11-27
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:聚散度;目镜;试验;物理试验;光学仪器;事故预防;颜色;安全;防护;预防医学;光学试验;扩散;透射率;焦距;夹鼻眼镜;眼镜(夹鼻);检验;眼
【英文主题词】:
【摘要】:
【中国标准分类号】:C73;C71
【国际标准分类号】:
【页数】:9P;A4
【正文语种】:其他
