PVC Insulated & Screened Thermocouple Cables. 10, 25, 50,100 & 200 metre lengths. These PVC insulated & screened thermocouple extension and compensating cables are designed with twisted cores & screened construction for lowered electrical noise. Good quality general purpose cables, both highly waterproof and flexible. Available in thermocouple extension types K, J, T, N and compensating type VX (KCB) for type K thermocouple.