... considered. The main technical data of thermocouple extension wire and thermocouple compensating wire as following: 1. Wire grade ( Thermocouple wire or extension wire) 2 ... , K, T, E) 3. Insulation material a. Conductor insulated ( PVC, Fiberglass, Teflon) b. Overall insulated ( PVC, Fiberglass, Teflon) c. Overbraided ( Stainless steel ...