1、Designation:D129812bManual of Petroleum Measurement Standards(MPMS),Chapter 9.1Standard Test Method forDensity,Relative Density,or API Gravity of Crude Petroleumand Liquid Petroleum Products by Hydrometer Method1This standard is issued under the fixed designation D1298;the number immediately followi
2、ng the designation indicates the year oforiginal adoption 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.This standard has been approved for u
3、se by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the laboratory determinationusing a glass hydrometer in conjunction with a series ofcalculations,of the density,relative density,or API gravity ofcrude petroleum,petroleum products,or mixtures of petroleumand nonpetr
4、oleum products normally handled as liquids,andhaving a Reid vapor pressure of 101.325 kPa(14.696 psi)orless.Values are determined at existing temperatures andcorrected to 15C or 60F by means of a series of calculationsand international standard tables.1.2 The initial hydrometer readings obtained are
5、 uncor-rected hydrometer readings and not density measurements.Readings are measured on a hydrometer at either the referencetemperature or at another convenient temperature,and readingsare corrected for the meniscus effect,the thermal glass expan-sion effect,alternate calibration temperature effects
6、 and to thereference temperature by means of the Petroleum MeasurementTables;values obtained at other than the reference temperaturebeing hydrometer readings and not density measurements.1.3 Readings determined as density,relative density,or APIgravity can be converted to equivalent values in the ot
7、her unitsor alternate reference temperatures by means of Interconver-sion Procedures(API MPMS Chapter 11.5),or Adjunct toD1250 Guide for Petroleum Measurement Tables(API MPMSChapter 11.1),or both,or tables,as applicable.1.4 The initial hydrometer readings determined in the labo-ratory shall be recor
8、ded before performing any calculations.The calculations required in Section 10 shall be applied to theinitial hydrometer reading with observations and results re-ported as required by Section 11 prior to use in a subsequentcalculation procedure(ticket calculation,meter factorcalculation,or base prov
9、er volume determination).1.5 Annex A1 contains a procedure for verifying or certify-ing the equipment for this test method.1.6 The values stated in SI units are to be regarded asstandard.The values given in parentheses are provided forinformation only.1.7 This standard does not purport to address al
10、l 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 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1250 Guide for Use of t
11、he Petroleum Measurement TablesD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD5854 Practice for Mixing and Handling of Liquid Samplesof Petroleum and Petroleum ProductsE1 Specification for ASTM Liquid-in-G
12、lass ThermometersE100 Specification for ASTM Hydrometers2.2 API Standards:3MPMS Chapter 8.1 Manual Sampling of Petroleum andPetroleum Products(ASTM Practice D4057)MPMS Chapter 8.2 Automatic Sampling of Petroleum andPetroleum Products(ASTM Practice D4177)MPMS Chapter 8.3 Mixing and Handling of Liquid
13、 Samplesof Petroleum and Petroleum Products(ASTM PracticeD5854)1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and the API Committee onPetroleum Measurement,and is the direct responsibility of Subcommittee D02.02/COMQ,the joint ASTM-
14、API Committee on Hydrocarbon Measurement forCustody Transfer(Joint ASTM-API).Current edition approved June 1,2012.Published October 2012.Originallyapproved in 1953.Last previous edition approved in 2012 as D129812a.DOI:10.1520/D1298-12B.2For referenced ASTM standards,visit the ASTM website,www.astm.
15、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.3Published as Manual of Petroleum Measurement Standards.Available from theAmerican Petroleum Institute(API),1220 L St.,NW,Washing
16、ton,DC 20005.*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 MPMS Chapter 11.1 Temperature and Pressure Volume Cor-rection Factors for Generalized Crude Oils,Refined Prod-ucts and Lubricating Oils(Adjunct to ASTM D1250)MPMS Chapter 11.5 Density/Weight/Volume Intraconver-sion2.3 Energy Institute Standards:4IP 389 Determination of wax appearance temperature(WAT)of middle d