1、Designation:D816418aStandard Guide forDigital Contact Thermometers for Petroleum Products,Liquid Fuels,and Lubricant Testing1This standard is issued under the fixed designation D8164;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,th
2、e 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 guide establishes criteria for the various parametersneeded to define a digital contact thermometer(DCT)sui
3、tablefor measuring temperature in the test methods utilized byCommittee D02.The DCT criteria are based on the design andsensing characteristics of the liquid-in-glass thermometers thathave been used successfully in Committee D02 test methods.1.2 The values stated in SI units are to be regarded assta
4、ndard.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-m
5、ine 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
6、 issued 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 Practic
7、e for Basic Calibration of Master Viscometersand Viscosity Oil StandardsD2386 Test Method for Freezing Point of Aviation FuelsD2500 Test Method for Cloud Point of Petroleum Productsand Liquid FuelsD2532 Test Method for Viscosity and Viscosity ChangeAfter Standing at Low Temperature of Aircraft Turbi
8、neLubricantsD2983 Test Method for Low-Temperature Viscosity of Au-tomatic Transmission Fluids,Hydraulic Fluids,and Lubri-cants using a Rotational ViscometerD3829 Test Method for Predicting the Borderline PumpingTemperature of Engine OilD4539 Test Method for Filterability of Diesel Fuels byLow-Temper
9、ature Flow Test(LTFT)D4684 Test Method for Determination of Yield Stress andApparent Viscosity of Engine Oils at Low TemperatureD5853 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
10、DriveLine Lubricants in a Constant Shear Stress 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 Det
11、ermination of Minimum ImmersionDepth and Assessment of Temperature Sensor Measure-ment DriftE1 Specification for ASTM Liquid-in-Glass ThermometersE563 Practice for Preparation and Use of an Ice-Point Bathas a Reference TemperatureE644 Test Methods for Testing Industrial Resistance Ther-mometersE1750
12、 Guide for Use of Water Triple Point CellsE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsE2877 Guide for Digital Contact Thermometers2.2 ISO Standard:3ISO 17025 General requirements for the competence oftesting and calibration laboratories1This guide is u
13、nder the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.91 on Coordinating Subcommittee on Thermometry.Current edition approved July 1,2018.Published August 2018.Last previousedition approved in 2018 as D8164
14、18.DOI:10.1520/D8164-18A.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 ASTM website.3Available from American National Standar
15、ds 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.United StatesThis international standard was developed in ac
16、cordance 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.1 3.Terminology3.1 Definitions:3.1.1 digital contact thermometer(DCT),nan electronicdevice consisting of a digital display and associated tempera-ture sensing probe.3.1.1.1 DiscussionThis device consists of a temperaturesensor connec
