A thermocouple is a device used to measure temperature. It consists of two dissimilar metal wires that are joined at one end. When the junction of the wires is heated or cooled, a voltage is generated. This voltage is proportional to the temperature difference between the junction and the other end of the wires.A multimeter is a device that can be used to measure voltage, current, and resistance. It can also be used to check thermocouples.
To check a thermocouple with a multimeter, follow these steps: