1、Designation:D741609(Reapproved 2020)Standard Practice forAnalysis of In-Service Lubricants Using a Particular Five-Part(Dielectric Permittivity,Time-Resolved DielectricPermittivity with Switching Magnetic Fields,Laser ParticleCounter,Microscopic Debris Analysis,and OrbitalViscometer)Integrated Teste
2、r1This standard is issued under the fixed designation D7416;the number immediately following 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 ed
3、itorial change since the last revision or reapproval.1.Scope1.1 This practice covers procedures for analysis of in-service lubricant samples using a particular five-part(dielectricpermittivity,time-resolved dielectric permittivity with switch-ing magnetic fields,laser particle counter,microscopic de
4、brisanalysis,and orbital viscometer)integrated tester to assessmachine wear,lubrication system contamination,and lubricantdielectric permittivity and viscosity.Analyzed results triggerrecommended follow-on actions which might include conduct-ing more precise standard measurements at a laboratory.Wea
5、rstatus,contamination status,and lubricant dielectric permittiv-ity and viscosity status are derived quantitatively from multipleparameters measured.1.2 This practice is suitable for testing incoming and in-service lubricating oils in viscosity grades 32 mm2/s at 40 C to680 mm2/s at 40 C having petr
6、oleum or synthetic base stock.This practice is intended to be used for testing in-servicelubricant samples collected from pumps,electric motors,compressors,turbines,engines,transmissions,gearboxes,crushers,pulverizers,presses,hydraulics and similar machin-ery applications.This practice addresses ope
7、ration and stan-dardization to ensure repeatable results.1.3 This practice is not intended for use with crude oils.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety
8、 concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with
9、internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D341
10、 Practice for Viscosity-Temperature Equations andCharts for Liquid Petroleum or Hydrocarbon ProductsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D924 Test Method for Dissipation Factor(or Power Factor)and Relative Permittivity(Dielec
11、tric Constant)of Electri-cal Insulating LiquidsD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum an
12、dPetroleum ProductsE617 Specification for Laboratory Weights and PrecisionMass StandardsE1951 Guide for Calibrating Reticles and Light MicroscopeMagnificationsD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products,Liquid Fuels,and Lubricants1This pr
13、actice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.96.07 on Integrated Testers,Instrumentation Techniques for In-ServiceLubricants.Current edition approved May 1,2020.Published June 2020.Origin
14、allyapproved in 2008.Last previous edition approved in 2015 as D7416 09(2015).DOI:10.1520/D7416-09R20.2For referenced 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 Docum
15、ent Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Princip
16、les for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.2.2 ISO Standards:3ISO 11171 Hydraulic fluid powerCalibration ofAutomaticParticle Counters for Liquids3.Terminology3.1 Definitions:3.1.1 integrated tester,nautomated,or semi-automatedstand alone instrument utilizing multiple technologies to pro-vide diagnostic recommendations(on-site or in-line)for con-dition monitoring of in-service lubric
