When using thermocouple sensors, the thermocouple wire used to carry the signal is just as important as the thermocouple sensor itself. Thermocouple wire is made from the same allow materials as the thermocouple sensor, and its primary role is to extend the thermocouple circuit from sensing junction (“hot junction”) to the measurement instrument (“cold junction”) without introducing additional errors.

Using thermocouple-grade wire or extension-grade wire helps ensure maximum temperature measurement accuracy - minimizing errors related to alloy composition or calibration mismatch.