NDLI: Determination of PRT Hysteresis in the Temperature Range from −50 °C to 300 °C

Content Provider	Springer Nature Link
Author	Žužek, V. Batagelj, V. Bojkovski, J.
Copyright Year	2010
Abstract	This paper discusses the contribution of hysteresis to the measurement uncertainty of industrial platinum resistance thermometers (IPRTs). Hysteresis is one of the sources of uncertainty that has so far not been sufficiently researched and documented. The term hysteresis applies to any system that is path dependent; the output depends on the history of the input. In our case, thermal hysteresis results in different resistance values at the same temperature point, depending on whether the temperature was increasing or decreasing. The reason for such behavior is related to the construction of the thermometer (strain due to thermal expansion and contraction) and also to possible moisture inside the encapsulation. In the process of evaluation of the calibration and measurement capabilities (CMCs) of IPRTs within Working Group 8, the Consultative Committee for Thermometry (CCT WG8) concluded that the uncertainty due to hysteresis is not uniformly defined and not always added to the total uncertainty of the resistance thermometer under calibration. In order to estimate the uncertainty contribution due to the hysteresis and compare different procedures, resistance measurements were carried out on a number of IPRTs of different qualities and tolerance classes. The temperature span was between −50 °C and 300 °C, which is the most frequent temperature range in the practical use of IPRTs. The hysteresis was then determined in different ways (change of resistance at the ice point and at the midpoint temperature according to the ASTM International Standard E644 and according to the new version of IEC Standard 60751), and a comparison of results was made.
Starting Page	1771
Ending Page	1778
Page Count	8
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	31
Issue Number	8-9
e-ISSN	15729567
Language	English
Publisher	Springer US
Publisher Date	2010-09-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Industrial platinum resistance thermometers Thermal hysteresis Physical Chemistry Mechanics Condensed Matter Physics Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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Thermal Hysteresis in Thin-Film Platinum Resistance Thermometers

Typical R(T $_{90}$) Characteristics of Platinum Thin-Film Resistance Thermometers in the Temperature Range from −50 °C to +660 °C

Practical Calibration of Platinum Resistance Thermometers in the Range −190 °C to 0 °C

Calibration of Industrial Platinum Resistance Thermometers up to $$700\,^{\circ }\mathrm{C}$$

Comparison Measurements for the Development of High-Temperature Platinum Resistance Scale

Evaluation of Small-Sized Platinum Resistance Thermometers with ITS-90 Characteristics

System for Realizing the Triple Point of Mercury to Calibrate Industrial-Type Platinum Resistance Thermometers

The Hysteresis Characteristics of Some Industrial PRTs

Characterization of High-Temperature Platinum Resistance Thermometers at Silver Point

Determination of PRT Hysteresis in the Temperature Range from −50 °C to 300 °C

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