The Effect of the Conversion Coefficients of Platinum-Based Resistance Thermometers on the Uncertainty Estimation
Abstract
Different types of thermometers (resistance thermometers, thermocouples, liquid in glass thermometers, radiation thermometers, etc.) are used in temperature measurements. Resistance thermometers are among the most reliable types of sensors used for sensitive temperature measurements. The traceability, accuracy and precision of the measurement results are important for the reliability of the measurements. There are many parameters that affect the uncertainty estimation in measurements made with resistance thermometers. One of the parameters to be considered in the uncertainty estimation is the interpolation error in converting the resistance value to temperature. Different methods (ITS-90, Calendar Van Dusen CVD, Polynomial equation) can be used to convert the resistance value to temperature. The problem is that there are differences in the temperature values read using the coefficients obtained by different methods. In this study, the effect of errors from CVD and polynomial equation methods on measurement uncertainty was investigated.
References
- H. Preston-Thomas, “The International Temperature Seale of 1990 (ITS-90),” Metrologia, 27, 3, 1990.
- J.J. Connolly, “Platinum Resistance Thermometry,” Monograph II:NMI Technology Transfer Series, 2004.
- T.J. Quinn, “Temperature”. 2nd ed. Academic Press; pp. 1-23, 1990.
- R. Rusby, “Good Practice Guide No. 125 Introduction to Temperature Measurement”, NPL, 2016.
- P.R.N. Childs,“6 - Resistance temperature detectors,” in Practical Temperature Measurement, Oxford:Butterworth-Heinemann, pp. 145-193, 2001.
- Bureau International des Poids et Mesures, BIPM, Guide to the Realization of the ITS-90, Platinum Resistance Thermometry, 2018.
- D.R. White, P. Saunders, “Determination of the Uncertainties for ITS-90 Realization by SPRTs Between Fixed Points,” Metrologia, 43, 327, 2006.
- D.R. White, P. Saunders, “The propagation of uncertainty with calibration equations,” Meas. Sci. Technol. 18, 2157, 2007.
- S. Dyurish, R. Palenchar, “Reduction of Measurement Uncertainty by Taking into Account Correlation in Measurements and Temperature Scale,” Realization Meas. Tech. 49, 689, 2006.
- P. Rosenkranz, “Uncertainty Propagation for Platinum Resistance Thermometers Calibrated According to ITS-90,” Int. J. Thermophys, 32: 106-119, 2011.
- Joint Committee for Guides in Metrology (JCGM), JCGM 100, Evaluation of Measurement Data-Guide to the Expression of Uncertainty in Measurement (GUM), GUM 1995 with minor corrections (JCGM, BIPM, Paris, 2008).
- EA-4/02 rev.01 – Expression of the uncertainty of measurement in calibration, 2013.
Abstract
References
- H. Preston-Thomas, “The International Temperature Seale of 1990 (ITS-90),” Metrologia, 27, 3, 1990.
- J.J. Connolly, “Platinum Resistance Thermometry,” Monograph II:NMI Technology Transfer Series, 2004.
- T.J. Quinn, “Temperature”. 2nd ed. Academic Press; pp. 1-23, 1990.
- R. Rusby, “Good Practice Guide No. 125 Introduction to Temperature Measurement”, NPL, 2016.
- P.R.N. Childs,“6 - Resistance temperature detectors,” in Practical Temperature Measurement, Oxford:Butterworth-Heinemann, pp. 145-193, 2001.
- Bureau International des Poids et Mesures, BIPM, Guide to the Realization of the ITS-90, Platinum Resistance Thermometry, 2018.
- D.R. White, P. Saunders, “Determination of the Uncertainties for ITS-90 Realization by SPRTs Between Fixed Points,” Metrologia, 43, 327, 2006.
- D.R. White, P. Saunders, “The propagation of uncertainty with calibration equations,” Meas. Sci. Technol. 18, 2157, 2007.
- S. Dyurish, R. Palenchar, “Reduction of Measurement Uncertainty by Taking into Account Correlation in Measurements and Temperature Scale,” Realization Meas. Tech. 49, 689, 2006.
- P. Rosenkranz, “Uncertainty Propagation for Platinum Resistance Thermometers Calibrated According to ITS-90,” Int. J. Thermophys, 32: 106-119, 2011.
- Joint Committee for Guides in Metrology (JCGM), JCGM 100, Evaluation of Measurement Data-Guide to the Expression of Uncertainty in Measurement (GUM), GUM 1995 with minor corrections (JCGM, BIPM, Paris, 2008).
- EA-4/02 rev.01 – Expression of the uncertainty of measurement in calibration, 2013.
Details
| Primary Language | English |
|---|---|
| Subjects | Metrology, Applied and Industrial Physics |
| Journal Section | Research Articles |
| Authors | |
| Early Pub Date | May 25, 2023 |
| Publication Date | June 1, 2023 |
| Published in Issue | Year 2023 |