2.6.1 Thermocouple Input
If the thermocouple wiring needs to be extended, use the correct compensating cable, preferably shielded and with the shield grounded at one end only. Ensure that the correct polarity is observed throughout and that thermal junctions are avoided, for example, by joining the two positive wires together and the two negative wires together. If plugs and sockets are required make sure that these are of the correct material for the thermocouple in use.