What is the purpose of a thermocouple?

The purpose of a thermocouple is to measure temperature. A thermocouple operates based on the thermoelectric effect, which occurs when two different metals are joined at two junctions and exposed to different temperatures. This difference in temperature creates a voltage that can be measured and is proportional to the temperature difference, allowing for accurate temperature readings.

When using a thermocouple, it is essential for applications that require precise temperature measurement in various environments, such as industrial processes or scientific research. They are favored over some other temperature sensors due to their wide temperature range, quick response time, and durability. Overall, thermocouples play a critical role in various fields by providing vital data related to temperature control and monitoring.