The time constant of a thermocouple is

Q. The time constant of a thermocouple is

A.            the time taken to attain the final temperature to be measured

B.            the time taken to attain 50% of the value of initial temperature difference

C.            the time taken to attain 63.2% of the value of initial temperature difference

D.            determined by the time taken to reach 100°C from 0°C

Answer: the time taken to attain 63.2% of the value of initial temperature difference