Verification of the system for indirect temperatures measurement in the massive batch

This paper presents verification of the system for indirect temperatures measurement (SITM) in the massive batch. This system is based on direct measurement of the atmosphere temperature in the furnace space between safety cover (bell) and the coil. SITM calculates temperature field inside the coil by continually at time based on continually measurement of the atmosphere temperature T_A. At annealing of the steel coils are unknown temperatures inside annealed roll because it is not possible to measure continually by direct (destruction of the batch, possible defect of the temperature sensor at manipulation with the batch etc.). The missing information about temperature behavior inside steel coil can lead to the extension or shorten of annealing duration. By extension of annealing duration lead to increase of the energy cost and its shortening can lead to decrease quality of annealed batch.