ASTM-B84 › Standard Test Method for Temperature-Resistance Constants of Alloy Wires for Precision Resistors
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Scope
1.1 This test method covers determination of the change of resistance with temperature of alloy wires used for resistance standards and precision resistors for electrical apparatus.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Significance and Use
2.1 Procedure A covers the determination of the equation of the curve relating resistance and temperature where the curve approximates a parabola. This test method may be used for wire of any metal or alloy over the temperature interval appropriate to the material.
2.2 Procedure B covers the determination of the mean temperature coefficient of resistance for wire of any metal or alloy over the temperature interval appropriate to the material.
Keywords
resistance change; resistance constants; resistors; resistor wire; temperature coefficient; temperature resistance;; ICS Number Code 29.050 (Superconductivity and conducting materials)
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29.050 (Superconductivity and conducting materials)
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Document Number
ASTM-B84-07(2019)
Revision Level
2007 R19 EDITION
Status
Current
Modification Type
Reapproval
Publication Date
April 1, 2019
Document Type
Test Method
Page Count
5 pages
Committee Number
B02.10