Abstract
In this paper, a concept of an intelligent temperature transducer (ITT) featuring a new autocalibration procedure cooperating with a platinum resistance temperature detector (RTD) is presented. This procedure is based on the application of resistors representing the standards of the measured temperature. The effect of this procedure is the minimization of linearity errors of the ITT processing characteristic, including the RTD, and the minimization of the ITT offset and gain errors. In the adopted ITT solution, the compensation of the RTD wires resistance is applied. The simulation and experimental research results, which confirm the high effectiveness of this procedure, are presented. The uncertainty of temperature measurement by means of the Monte Carlo method is evaluated and experimental research results, confirming the possibility of measuring temperature within a range of 0 °C–200 °C with a 0.03 °C uncertainty, are presented.
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