Calibration and Application Techniques for Platinum Resistance Thermometers

[+] Author and Article Information
R. P. Benedict, R. J. Russo

Large Turbine Division, Westinghouse Electric Corp., Lester, Pa.

J. Basic Eng 94(2), 381-386 (Jun 01, 1972) (6 pages) doi:10.1115/1.3425429 History: Received August 19, 1971; Online October 27, 2010


The International Practical Temperature Scale has been redefined recently. It follows that the interpolating equations relating platinum resistance to temperature must be reevaluated for all platinum resistance thermometers which are used as standards for calibration work. After a brief review of the former calibration procedure, the new temperature scale is discussed as it affects resistance thermometry in the temperature range from 0 C to 630.74 C. An example based on new experimental data is given to illustrate the method of determining thermometer constants for the new scale, and to indicate the magnitude of the changes required.

Copyright © 1972 by ASME
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