1、Designation:D741609(Reapproved 2015)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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D341 Practice for Viscosity-Temperatur
9、e Charts for LiquidPetroleum 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(Dielectric Constant)of Electri-cal Insulating LiquidsD1298 Test Metho
10、d 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 andPetroleum ProductsE617 Specification for Laboratory Weights an
11、d PrecisionMass StandardsE1951 Guide for Calibrating Reticles and Light MicroscopeMagnificationsD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricants2.2 ISO Standards:3ISO 11171 Hydraulic fluid powerCalibration ofAutomaticParticle Cou
12、nters for Liquids3.Terminology3.1 Definitions:1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.96 on In-Service Lubricant Testing and Condition Monitoring Services.Current edition app
13、roved June 1,2015.Published July 2015.Originally approvedin 2008.Last previous edition approved in 2009 as D7416 09.DOI:10.1520/D7416-09R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume in
14、formation,refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization(ISO),ISOCentral Secretariat,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO B
15、ox C700,West Conshohocken,PA 19428-2959.United States1 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 lubricants.3.2 Definitions of Terms Spec
16、ific to This Standard:3.2.1 chemistry index(Chem Index),nparameter com-puted from dielectric permittivity increase compared to newoil.The value is equal to dielectric difference multiplied by100.3.2.2 chemistry status(Chem Status),ndiagnostic severityranking having 0 to 100 score based on the highest alarmindication of dielectric permittivity and viscosity measure-ments.3.2.3 counts 4,nsensor 3 measured particle counts permL for particles 4 m.3.2.4 counts 6,nsensor 3 measured particle counts per
