Thermocouple extension cable and wire Thermocouple Extension cable and wire which are used in temperature measuring method by Thermocouple, that consists of two dissimilar metals that are joined together at the sensing end. Extension wire uses same materials with thermocouple to extend from thermocouple to measuring equipment.
The insulation on thermocouple extension cable and wire is color coded for identification. For information on usable temperature ranges for the insulation, please find the “Wire Insulation Identification” table. Other tables at this link are also available for information on the metals used in the thermocouple extension cable and wire, insulation color codes, and more.