Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 10–11
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Process Engineering Section – Instrumentation and Automation Technology Forum – Daily Question – Questions 10–11: Fill in the blanks. The conditions for a thermocouple to generate a thermoelectric potential are ( ), ( ). Answer: The materials of the two thermal electrodes must be different ； The temperatures of the two contacts are different
There must be a contact potential difference, as well as a temperature difference
When two different metals are in contact at one end, there is a temperature difference between the contact end and the end that is not in contact
A thermocouple is composed of two different conductors, with different temperatures at its two junctions
The two thermoelectric electrode materials are the same, and the temperatures at the two connection points are the same
1. A thermocouple must be composed of two different conductors. 2. The temperatures at the two terminals of the thermocouple must be different
The two thermoelectric electrode materials are different; the temperatures of the two contacts are different
The two thermoelectric electrode materials are different； The temperatures of the two contacts are different
The two thermoelectrode materials are different, and the temperatures at the two contacts are different
The two thermoelectric electrode materials are different； The temperatures of the two contacts are different