Analytical Model of Measurement Deviation of Platinum Resistance Temperature Detectors

In this article we focus on the issue of temperature measurement using platinum sensors and their deviations. We describe the analytical solution of measurement deviations with one sensor or a pair of two sensors. We also compare the actual deviations with the limit deviations given by the applicable standards. Our results show that the measurement deviations by platinum sensors are relatively small and the accuracy of the deviation regression and its numerical modeling is a critical problem to solve. The paper presents mathematical models to verify the accuracy of single sensors and their pairs using optimization techniques. This paper provides useful information for all those involved in temperature measurement in industry, science and technology.