1、Designation:D216221Standard Practice forBasic Calibration of Master Viscometers and Viscosity OilStandards1This standard is issued under the fixed designation D2162;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last rev
2、ision.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 practice covers the calibration of master viscom-eters and viscosity oil standards,both of which may be used tocalibrate rout
3、ine viscometers as described in Test MethodD445 and Specifications D446 over the temperature range from15 C to 100 C.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 The SI-based units for calibration constants and kine-
4、matic viscosities are mm2/s2and mm2/s,respectively.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-mine the applic
5、ability of regulatory limitations prior to use.For specific warning statements,see Section 7.1.4 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 Stand
6、ards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D446 Specifications and Operating
7、 Instructions for GlassCapillary Kinematic ViscometersD1193 Specification for Reagent WaterD1250 Guide for the Use of the Joint API and ASTMAdjunct for Temperature and Pressure Volume CorrectionFactors for Generalized Crude Oils,Refined Products,andLubricating Oils:API MPMS Chapter 11.1D1480 Test Me
8、thod for Density and Relative Density(Spe-cific Gravity)of Viscous Materials by Bingham Pycnom-eterD1590 Test Method for Surface Tension of WaterD8278 Specification for Digital Contact Thermometers forTest Methods Measuring Flow Properties of Fuels andLubricantsE1 Specification for ASTM Liquid-in-Gl
9、ass ThermometersE563 Practice for Preparation and Use of an Ice-Point Bathas a Reference TemperatureE644 Test Methods for Testing Industrial Resistance Ther-mometersE1137 Specification for Industrial Platinum Resistance Ther-mometersE1750 Guide for Use of Water Triple Point CellsE2593 Guide for Accu
10、racy Verification of Industrial Plati-num Resistance ThermometersE2877 Guide for Digital Contact Thermometers2.2ISO Standard:3ISO 3666 Viscosity of Water3.Terminology3.1 Definitions:3.1.1 digital contact thermometer(DCT),nan electronicdevice consisting of a digital display and associated tempera-tur
11、e sensing probe.3.1.1.1 DiscussionThis device consists of a temperaturesensor connected to a measuring instrument;this instrumentmeasures the temperature-dependent quantity of the sensor,computes the temperature from the measured quantity,andprovides a digital output.This digital output goes to a di
12、gitaldisplay and/or recording device that may be internal or externalto the device.3.1.1.2 DiscussionThe devices are often referred to as a“digital thermometers,”however the term includes devices that1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and
13、 Lubricants and is the direct responsibility of Subcom-mittee D02.07 on Flow Properties.Current edition approved April 1,2021.Published April 2021.Originallyapproved in 1963.Last previous edition approved in 2017 as D2162 17.DOI:10.1520/D2162-21.2For referenced ASTM standards,visit the ASTM website,
14、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 Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org
15、.*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 accordance with internationally recognized principles on standardization establis
16、hed 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.1sense temperature by means other than being in physicalcontact with the media.3.1.1.3 DiscussionPET is an acronym for portable elec-tronic thermometers,a subset of digital contact thermometers(DCT).3.2 Definitions of Terms Specific to This Standard:3.2.1 basic calibration,ncalibration based on the primarystand
