MAX8863 uses voltage reference to compensate the thermocouple cold junction

Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. When the two ends of two conductors of different components are connected to form a loop, when the temperatures of the two junctions are different, a thermal current will be generated in the loop. If there is a temperature difference between the working end and the reference end of the thermocouple, the display instrument will indicate the temperature value corresponding to the thermoelectric potential generated by the thermocouple. The thermoelectric heat of the thermocouple will increase as the temperature of the measuring end increases. Its size is only related to the thermocouple material and the temperature of the two ends, and has nothing to do with the length and diameter of the thermoelectrode. The appearance of various thermocouples is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as thermoelectrode, insulating sleeve protection tube and junction box, and are usually used in conjunction with display instruments, recording instruments and electronic regulators.

[Attachment: MAX8863 uses voltage reference to compensate the thermocouple cold junction]