Abstract
Thin-film platinum resistance thermometers (PRTs) are generally manufactured using the deposition of a thin platinum film on an alumina substrate and a laser-trimming method. Because of the strong adhesion between the platinum thin film and the alumina substrate, the PRTs inevitably have strain over the operating temperature range. This causes anomalies and instabilities in the resistance versus temperature characteristics (R–T). The most prominent and observable effect of thermally induced strain is the thermal hysteresis in the R–T characteristics. Thermal hysteresis is one of the main uncertainty factors in the calibration of industrial platinum resistance thermometers in laboratories. The thermal hysteresis for 30 thin-film PRTs was measured in the range of 0 °C to 500 °C in 100 °C steps. The thermal hysteresis was measured repeatedly using the same process, and the hysteresis decreased drastically with the repeated measurements. The thermal hysteresis was distributed from 16 mK to 156 mK for all sensors, and the lowest hysteresis was 1 mK to 11 mK in the test temperature range.
Similar content being viewed by others
References
H.M. Hashemian, K.M. Petersen, in Temperature, Its Measurement and Control in Science and Industry, vol. 6, ed. by J.F. Schooley (AIP, New York, 1992), pp. 427–432
B.W. Mangum, G.A. Evans, Jr., in Temperature, Its Measurement and Control in Science and Industry, vol. 5, ed. by J.F. Schooley (AIP, New York, 1982), pp. 795–801
D.J. Curtis, in Temperature, Its Measurement and Control in Science and Industry, vol. 5, ed. by J.F. Schooley (AIP, New York, 1982), pp. 803–812
Historical Standard, ASTM E644-02 Standard Test Methods for Testing Industrial Resistance Thermometers (ASTM International, West Conshohocken, PA, 2002), pp. 10–11
http://www.omega.com/ppt/pptsc.asp?ref=F1500_F2000_F4000&Nav=temc13, Omega Engineering, Inc., Stamford, CT (2010)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gam, K.S., Yang, I. & Kim, YG. Thermal Hysteresis in Thin-Film Platinum Resistance Thermometers. Int J Thermophys 32, 2388–2396 (2011). https://doi.org/10.1007/s10765-011-1041-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10765-011-1041-8