title: Correction for thermal lag in dynamic temperature measurements using resistance thermometers.
abstract: Periodical changes of temperature in the autoclave for the purpose of automatic control are measured with the aid of an encased resistance thermometer. To minimize dynamic errors of this thermometer, two different correcting algorithms have been employed: a known single time-constant one and an algorithm proposed by the authors-two time-constant one. The verification and comparison of the two algorithms was done using a physical model of the autoclave and a real thermometer. Additionally, three methods for the determination of time constants of the second order model were compared and factors influencing the algorithms accuracy, including time constants and sampling time, were analysed. The presented methods make possible to increase both the bandwidth of dynamical temperature measurements and its precision with relatively limited increase in computational complexity of the correction algorithm.
authors.affiliation: Department of Mechanical and Power Engineering, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland. krzysztof.tomczuk@pwr.wroc.pl
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Tomczuk
authors.forename: Radoslaw
authors.initials: R
authors.lastname: Werszko