1、Designation:D777713Designation 559/12Standard Test Method forDensity,Relative Density,or API Gravity of Liquid Petroleumby Portable Digital Density Meter1This standard is issued under the fixed designation D7777;the number immediately following the designation indicates the year oforiginal adoption
2、or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of the density,relative density,or API gr
3、avity of liquid petroleum productsusing portable digital density meters at test temperaturesbetween 0 and 40C(32 to 104F).Its application is restrictedto samples with a dry vapor pressure equivalent up to 80 kPa(11.6 psi)and a viscosity below 100 mm2/s(cSt)at the testtemperature.1.2 This test method
4、 is suitable for determining the densityto the nearest 1 kg/m3.To determine the density to the nearest0.1 kg/m3,use Test Method D4052.1.3 This test method is easily calibrated and primarilysuitable for field applications.It is important for the user toknow and understand the electrical classificatio
5、n of the area inwhich the analyzer is to be used and to select an analyzerappropriate for that classification.1.4 Test Methods D287,D1298,and D6822 are used in fieldapplications.This test method provides an alternative fieldmethod that is easily calibrated and does not pose the hazard ofhydrometer g
6、lass breakage present in current field methods.1.5 Portable digital density meters measure the density andtemperature of the filled-in sample at the sample temperature.The measured density and temperature are automatically con-verted into:Density at 15C/density at 60FRelative density 15C/15C/relativ
7、e density 60F/60FAPI gravity 15C/API gravity 60Fby the instrument using the calculation routines for Gener-alized Products as defined in Guide D1250.1.6 If the density meter does not have in-built software tocalculate the density at the reference temperature,this iscalculated from the observed densi
8、ty at test temperature usingthe Petroleum Measurement Tables.1.7 The accepted units of measure for density are kilogramsper cubic metre(SI unit)or grams per cubic centimetre.Valuesin SI units are to be regarded as the standard.Values inparentheses are for information only.Both SI and customaryunits
9、have been rounded;they may not be exactly equivalent.1.8 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of r
10、egulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D287 Test Method for API Gravity of Crude Petroleum andPetroleum Products(Hydrometer Method)D1193 Specification for Reagent WaterD1250 Guide for Use of the Petroleum Measurement TablesD1298 Test Method for Density,Relative
11、Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of P
12、etroleum andPetroleum ProductsD6822 Test Method for Density,Relative Density,and APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Thermohydrometer Method2.2 Energy Institute Standards:3IP 475 Petroleum Liquids Manual Sampling1This test method is under the jurisdiction of ASTM Committe
13、e D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.04.0D on Physical and Chemical Methods.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 2012.Last previous edition approved in 2012 as D7777 12.DOI:10.1520/D777713.This standard
14、has been developed through the cooperative effort between ASTMInternational and the Energy Institute,London.The EI and ASTM Internationallogos imply that the ASTM International and EI standards are technicallyequivalent,but does not imply that both standards are editorially identical.2For referenced
15、 ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Energy Institute,61 New Cavendish St.,London,WIG 7AR,U.K.,http:/w
16、ww.energyinst.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.3 ASTM Adjuncts:Adjunct to D1250-04 Temperature and Pressure VolumeCorrection Factors for Generalized Crude Oils,RefinedProducts,and Lubricating Oils43.Terminology3.1 Definitions:3.1.1 adjustment,noperation of bringing the portabledigital density meter to a state of performance suitable for itsuse,by set
