Models of the drift of the calibration curves of thermocouples and resistance thermometers under reactor conditions

The calibration curves of thermocouples and resistance thermometers undergo changes (drift) of radiation and thermal nature when these devices operate for a long time under the conditions in nuclear reactor. In the present article, we propose on the basis of experimental data computational-experimental models of the drift of the calibration curves of thermocouples and resistance thermometers used to measure the coolant temperature at the exit and entrance of the core of a propulsion reactor. [PUBLICATION ABSTRACT]