1、Designation:D704214Standard Test Method forDynamic Viscosity and Density of Liquids by StabingerViscometer(and the Calculation of Kinematic Viscosity)1This standard is issued under the fixed designation D7042;the number immediately following the designation indicates the year oforiginal adoption or,
2、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 and specifies a procedure for theconcurrent measurement of bot
3、h the dynamic viscosity,andthe density,of liquid petroleum products and crude oils,bothtransparent and opaque.The kinematic viscosity,can beobtained by dividing the dynamic viscosity,by the density,obtained at the same test temperature.1.2 The result obtained from this test method is dependentupon t
4、he behavior of the sample and is intended for applicationto liquids for which primarily the shear stress and shear rate areproportional(Newtonian flow behavior).1.3 The precision has only been determined for thosematerials,viscosity ranges,density ranges,and temperatures asindicated in Section 15 on
5、 Precision and Bias.The test methodcan be applied to a wider range of materials,viscosity,density,and temperature.For materials not listed in Section 15 onPrecision and Bias,the precision and bias may not be appli-cable.1.4 The values stated in SI units are to be regarded asstandard.No other units o
6、f measurement are included in thisstandard.1.5 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 to determine theapplicability of regulatory
7、 limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D975 Specification for Diesel Fuel OilsD2162 Practice for Basic Calibration of Master Viscometersand Viscosity Oil Stand
8、ardsD2270 Practice for Calculating Viscosity Index from Kine-matic Viscosity at 40 and 100CD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalM
9、easurement System PerformanceD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricantsD6617 Practice for Laboratory Bias Detection Using SingleTest Result from Standard MaterialD6708 Practice for Statistical Assessment and Improvementof E
10、xpected Agreement Between Two Test Methods thatPurport to Measure the Same Property of a MaterialD6751 Specification for Biodiesel Fuel Blend Stock(B100)for Middle Distillate FuelsD7467 Specification for Diesel Fuel Oil,Biodiesel Blend(B6 to B20)2.2 ISO Standards:3ISO 5725 Accuracy(trueness and prec
11、ision)of measurementmethods and resultsISO/IEC 17025 General Requirements for the Competenceof Testing and Calibration Laboratories2.3 Other Documents:4NIST Technical Note 1297 Guideline for Evaluating andExpressing the Uncertainty of NIST Measurement Results3.Terminology3.1 Definitions:3.1.1 densit
12、y(),nmass per unit volume.3.1.2 dynamic viscosity(),nthe ratio between the appliedshear stress and rate of shear of a liquid.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.07 on Fl
13、ow Properties.Current edition approved May 1,2014.Published July 2014.Originally approvedin 2004.Last previous edition approved in 2012 as D7042 12a.DOI:10.1520/D7042-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
14、ook of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from National Institute of Standards and Technology(NIST),100Bur
15、eau Dr.,Stop 1070,Gaithersburg,MD 20899-1070,http:/www.nist.gov.*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 3.1.2.1 DiscussionIt is sometimes called the coefficient ofdy
16、namic viscosity or,simply,viscosity.Thus,dynamic viscos-ity is a measure of the resistance to flow or to deformation ofa liquid under external shear forces.3.1.2.2 DiscussionThe term dynamic viscosity can also beused in a different context to denote a frequency-dependentquantity in which shear stress and shear rate have a sinusoidaltime dependence.3.1.3 kinematic viscosity(),nthe ratio of the dynamicviscosity()to the density()of a liquid.3.1.3.1 DiscussionFor gravity flow under a given hydro-sta
