Compensation of the Temperature Measurement Signal in an Experimental Dilatometer by Joule Heating and Controlled Atmosphere

The signal compensation was performed for two temperature sensors, an infrared pyrometer and a K-type thermocouple, which are used to measure and control the temperature in an experimental dilatometer by Joule heating and controlled atmosphere. Sensor signals were corrected by compensation polynomials determined experimentally and encoded in LabVIEW™. The compensation polynomials were validated with the experimental thermal history, correcting the temperature signal of both sensors. Finally, compensation polynomials were implemented in the temperature control system of the experimental dilatometer to exchange the signal sensor from a low to high temperature range.