Abstract
An analysis of error in temperature difference measurement using pairs of platinum resistance thermometers (PRT) is presented. Nonlinearity of its characteristic makes procedure for calculating value of maximal error in the full range of measurements time consuming. For the range between 0 °C to 661 °C Standard EN 60751 defines the equation for PRT resistance versus temperature relation as quadratic equation and for range −200 °C to 0 °C as equation of third grade. The author has developed the method of calculation using search for extremum place in error characteristics of every thermometers pair.
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European Standard EN 60751 (IEC Publication 751) Industrial platinum resistance thermometer sensors
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Goszczyński, T. (2018). Analysing the Error of Temperature Difference Measurement with Platinum Resistance Thermometers. In: Szewczyk, R., Zieliński, C., Kaliczyńska, M. (eds) Automation 2018. AUTOMATION 2018. Advances in Intelligent Systems and Computing, vol 743. Springer, Cham. https://doi.org/10.1007/978-3-319-77179-3_54
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DOI: https://doi.org/10.1007/978-3-319-77179-3_54
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