Thermocouples/
Compensating Cables

Color Codes of Compensating Cables

Color Code Type of Compensating Cable

Color Code Type of Compensating Cable Image

Note: The core wires of extension lead wires of R and S have a copper and constantan (copper/nickel alloy) combination; however, since they include copper more than constantan wires used for other thermocouples (T or E), they have the same color as copper wires.

Thermocouple Wire Identification (Color Code) with ASTM Standard

Thermocouple Wire Identification (Color Code) with ASTM Standard Image