1、Designation:D827820Standard Specification forDigital Contact Thermometers for Test Methods MeasuringFlow Properties of Fuels and Lubricants1This standard is issued under the fixed designation D8278;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、 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 specification establishes criteria for digital contactthermometers(DCT)for use in test metho
3、ds that measure flowproperties of materials within the scope of Committee D02.The DCT criteria are based on the design and sensing charac-teristics of the liquid-in-glass thermometers that are usedsuccessfully in Committee D02 test methods.1.2 The values stated in SI units are to be regarded asstand
4、ard.No other units of measurement are included in thisstandard.1.3 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,health,and environmental practices and deter-min
5、e the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations i
6、ssued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D97 Test Method for Pour Point of Petroleum ProductsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D2162 Practice
7、for Basic Calibration of Master Viscometersand Viscosity Oil StandardsD2500 Test Method for Cloud Point of Petroleum Productsand Liquid FuelsD2983 Test Method for Low-Temperature Viscosity of Au-tomatic Transmission Fluids,Hydraulic Fluids,and Lubri-cants using a Rotational ViscometerD3829 Test Meth
8、od for Predicting the Borderline PumpingTemperature of Engine OilD4539 Test Method for Filterability of Diesel Fuels byLow-Temperature Flow Test(LTFT)D4684 Test Method for Determination of Yield Stress andApparent Viscosity of Engine Oils at Low TemperatureD5481 Test Method for Measuring Apparent Vi
9、scosity atHigh-Temperature and High-Shear Rate by Multicell Cap-illary ViscometerD5853 Test Method for Pour Point of Crude OilsD6371 Test Method for Cold Filter Plugging Point of Dieseland Heating FuelsD6821 Test Method for Low Temperature Viscosity of DriveLine Lubricants in a Constant Shear Stress
10、 ViscometerD6896 Test Method for Determination of Yield Stress andApparent Viscosity of Used Engine Oils at Low Tempera-tureD7279 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids by Automated Houillon ViscometerD7962 Practice for Determination of Minimum ImmersionDepth and Assess
11、ment of Temperature Sensor Measure-ment DriftD8210 Test Method for Automatic Determination of Low-Temperature Viscosity of Automatic Transmission Fluids,Hydraulic Fluids,and Lubricants Using a RotationalViscometerE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE563 Practice
12、for Preparation and Use of an Ice-Point Bathas a Reference TemperatureE644 Test Methods for Testing Industrial Resistance Ther-mometersE1750 Guide for Use of Water Triple Point CellsE2877 Guide for Digital Contact Thermometers2.2 ISO Standard:3ISO 17025 General requirements for the competence oftest
13、ing and calibration laboratories1This 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 Flow Properties.Current edition approved Sept.1,2020.Published October 2020.Originallyapproved
14、in 2019.Last previous edition approved in 2019 as D8278 19.DOI:10.1520/D8278-20.2For 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 Document Summary page onthe
15、 ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.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.Unite
16、d StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.3.Terminology3.1 Definitions:3.1.1 accuracy,nthe closeness of agreement between atest result and an accepted reference value.E1773.1.2 digital contact thermometer(DCT),nan electr
