Refer to the drawing of a simple chromel-alumel thermocouple circuit (see figure below).
The thermocouple, thermocouple connection head, and reference junction panel are located inside a reactor building (RB) while the temperature instrument is located outside the RB.
Thermocouple temperature indication is initially 440°F.
A steam leak inside the RB increases the temperatures of the thermocouple connection head and reference junction panel by 40°F, while the temperature at the measuring tip is unchanged.
What is the resulting temperature indication?
A. 400°F
B. 440°F
C. 480°F
D. 520°F
Show Answer
Answer: A
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