Thermocouple compensating wires, or simply compensating wires, consist of compensating wire alloy wire, insulation layer, sheath, and shielding layer. They are insulated wires whose nominal thermoelectric potential matches that of the thermocouple within a specific temperature range (including room temperature). These wires are primarily used to connect thermocouples to measuring devices to correct for errors caused by temperature variations at the connection point.
Using compensating wires to connect thermocouples to measuring devices offers two significant advantages:
First, it improves the physical and mechanical properties of the thermocouple temperature measurement circuit. By using multi-strand wires or small-diameter compensating wires, not only is the circuit flexibility improved, making wiring more convenient, but the circuit resistance can also be adjusted or external interference can be effectively shielded.
Second, compensating wires significantly reduce the cost of the measuring circuit. Especially when the distance between the thermocouple and the measuring device is long, using compensating wires can significantly save on thermocouple materials, particularly for precious metal thermocouples, where the economic benefits are even more obvious.
