... 2.Temperature:260,200,105,70 3.Alloy wire:CU,CU-Nickel,Constantan,Fe,NiCr,NiCrSi 4. ... . The EMF is linear with temperature. We offer all type of thermocouple wires for measuring temperature from -270 C ... the requirements for PVC insulated thermocouple extension cable, type KX, Stranded wire, 2x24 AWG, standard tolerances and color coding ... ± 1, 1º C or 0, 4% Thermocouple Extension wire Type KX-PVC/PVC