Thermocouple as a noun is a transducer consisting of two different metals welded together at each end; a voltage is produced that is proportional to the difference in temperature between the two junctions (one of which is normally held at a known temperature) while Thermopile as a noun is an electronic device that converts thermal energy into electrical energy. usually constructed using a series-combination of thermocouples.
Part of speech: noun
Definition: A transducer consisting of two different metals welded together at each end; a voltage is produced that is proportional to the difference in temperature between the two junctions (one of which is normally held at a known temperature)
Part of speech: noun
Definition: An electronic device that converts thermal energy into electrical energy. Usually constructed using a series-combination of thermocouples.
We hope you now know whether to use Thermocouple or Thermopile in your sentence.