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.
Initially, the temperature instrument indicates 440°F.
A steam leak outside the RB increases the temperature of the temperature instrument from 80°F to 120°F, while the temperatures at the thermocouple, thermocouple connection head, and reference junction panel remain unchanged.
Assuming the temperature instrument remains operable, what is the resulting temperature indication?
A. 400°F
B. 440°F
C. 480°F
D. 560°F
Show Answer
Answer: B
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