Thermocouple & Extension Grade Wire

Thermocouple grade wire used to either fabricate thermocouples by creating a junction in one end of the wire pair or as extension wire between the thermocouple and the measuring device. The conditions of measurement determine the type of thermocouple wire and insulation that should be used. Temperature range, wire gauge, environment, protection, insulation requirements, response and service life should all be considered.

Thermocouple extension wire has approximately the same thermoelectric characteristics as thermocouple grade wire, but its purpose is only to carry the signal, not to measure temperature.