Testing and clearing the high temperature module error from 0 to 1250°C for measurement with 16 K-type thermocouples

The subject of this paper is a temperature device for measuring 16 temperatures with thermocouples type K in the temperature range from 0 to 1250°C, called “high temperature module for 16 thermocouples”. For this ARDUINO-based device, experiments were carried out on electrically resistive furnaces, with significant errors in temperature measurement inside the furnace. The work is a comparison of the mathematical transformation in the amplifier and its improvement. The design of the module, the experimental study of the module and the results of the tests are described.