Exam CFPS Topic 7 Question 27 Discussion

Actual exam question for NFPA's CFPS exam
Question #: 27
Topic #: 7
What temperature measurement device consists of a pair of wires of different metals or alloys welded together at a point to form a junction to compare the voltage magnitude compared with a compensating junction at 0°C and the voltage difference calibrated to give the temperature in degrees?

Suggested Answer: C Vote an answer

The correct answer is C. A thermocouple is a temperature measurement device that consists of a pair of wires of different metals or alloys welded together at a point to form a junction. The junction is exposed to the temperature to be measured, while the other end of the wires is connected to a reference junction at 0°C. The thermocouple produces a voltage difference between the two junctions that depends on the temperature difference. This voltage difference can be calibrated to give the temperature in degrees using a thermocouple table or a formula123

by Barbara at Mar 16, 2026, 01:26 PM

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