Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
Correct answer: C. Thermocouple
- A. Mercury in glass thermometer
- B. Resistance thermometer
- C. Thermocouple
- D. Vapor pressure thermometer
Explanation
A thermocouple provides a continuous electrical temperature signal and is rugged enough for industrial heat-exchanger service. Mercury-in-glass thermometers usually provide local indication rather than convenient continuous measurement.
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