Question

For a thermocouple, the inversion temperature is ${600}^{0}C$ and the neutral temperature is ${320}^{0}C$. Find the temperature of the cold junction ?

• A. ${40}^{0}C$
• B. ${20}^{0}C$
• C. ${80}^C$
• D. ${60}^{0}C$

Answer 1

The correct option is A ${40}^{0}C$

In a thermocouple, $T_n=\frac{T_i+T_c}{2}$

where $T_n$ is the neutral temperature

$T_i$ is the inversion temperature

$T_c$ is the cold junction temperature.

Thus $320=\frac{600+T_c}{2}$

$⟹T_c={40}^{\circ }C$