Thermocouple cables are constructed of two wires made from dissimilar metals. These two wires are joined together at the end connected to a thermocouple junction, which produces a temperature-dependent voltage that can be used to measure the temperature of applications.
The standard color code for thermocouple wires are red for the negative lead, the positive lead has the same color as the thermocouple and the overall color of insulated extension grade wire, and brown for the outer jacket. There are eight common types of Thermocouple Wire: Types E, J, K, T, N, R, S, and B. In this specific application, the customer needed Type B Thermocouple Wire. The normal conductor materials in this thermocouple pairing are manganese and copper.
Our Custom Composite Thermocouple Cable Solution
One Allied Wire and Cable customer that worked in the global manufacturing industry approached us when they could not find a standard cable that fit their application. In addition to having a cable with thermocouple pairing, this customer needed a communication cable as well.
This custom composite thermocouple cable was constructed of two pairs of conductors. One pair was 20 AWG tinned copper with an FEP shield, and the other was a pair of 20 AWG manganese/copper wires also shielded with FEP. For the communication part of the composite cable, the wires were colored black and white. The thermocouple wires were red and gray. Both pairs had an aluminum/mylar foil shield and were combined under a grey FEP jacket. The cable was rated to 300 volts and had a temperature range of -90 degrees Celsius to +200 degrees Celsius.
If your next application requires a custom composite cable, Allied Wire and Cable’s custom cable experts can help design the perfect solution. Visit our Custom Cable Design Center or call 800-472-4655 to speak with a representative today!