203 488 4477

Home / Resources / Guides & Tools / Thermocouple Reference

Thermocouple Reference

Thermocouple Wire Color Codes


Various national and international standard agencies have adopted color codes to identify thermocouple wire
and thermocouple products. In the United States, thermocouple-grade wire usually has an overall brown jacket.
For Types B, R, and S, the color codes relate to the compensating cable commonly used.

Thermocouple Wire Color Codes

Comparison of Temperature Transducers

Time Contraints


The time constant of any sensor is defined as the time required for that sensor to respond to 63.2% of its
total output signal when subjected to a step change. The step change can be either an increase or decrease in the
parameter being measured. Five constants are required for a sensor to reach 99% of its total change.

Share by: