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TitleThe hysteresis characteristics of some industrial PRTs
Publication TypeJournal Article
Year of Publication2010
AuthorsWhite, D.R., Jongenelen C.L., and Saunders P.
JournalInternational Journal of Thermophysics
Pagination1676 - 1684
Date Published2010
ISSN0195928X (ISSN)
KeywordsCeramic materials, Ceramic sensors, Differential thermal expansion, glass, Hysteresis, Hysteresis characteristics, Industrial platinum resistance thermometer, Industry, Platinum, Platinum resistance thermometers, Platinum wire, Sensing elements, Temperature range, Temperature sensors, Tension and compression, Thermal expansion, Thermometers, Wire
AbstractHysteresis in industrial platinum resistance thermometers (IPRT) is caused by tension and compression induced in the wire due to differential thermal expansion of the platinum wire and the substrate. This article reports the measurement of hysteresis in a wide range of IPRTs including thin-film, glass-encapsulated, ceramic-encapsulated, and low-hysteresis partially-supported sensors, over the temperature range from-20 °C to 180 °C. The study confirms previous findings that the amount of hysteresis is very dependent on the design of the sensing element and the temperature range. In addition, some sensors exhibit a large change in resistance on first use, whereas others showed a slow increase in resistance with use. The observed hysteresis ranged between 0.2% of the temperature range for one glass-encapsulated sensor and 0.002% for the best of the partially-supported ceramic sensors. © Springer Science+Business Media, LLC 2010.

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