Extension and compensation cables are used to electrically connect the inactive ends of the wires of a thermocouple to the cold weld junction, where the wires of this couple do not reach this cold weld junction
Extension cables are manufactured with the wires of the same composition as the wires of the corresponding couples. They are coded with the letter “X” placed after the thermocouple code, for example “JX”.
Compensation cables are manufactured with the wires of different stranding or material to the wires of the corresponding thermocouples. They are marked by the letter “C” placed after the thermocouple code, for example “KC”.