What is a thermocouple circuit ?

A thermocouple circuit is a setup designed to measure temperature using a thermocouple sensor. It typically includes components such as the thermocouple itself, connecting wires, a reference junction (usually at the cold end), and a measurement device (like a voltmeter or thermocouple thermometer).

Thermocouples work on the principle of the Seebeck effect, where a voltage is generated when two dissimilar metals are joined together and exposed to a temperature gradient. This voltage is proportional to the temperature difference between the measurement junction and the reference junction in the circuit.

A thermocouple is a sensor used to measure temperature in a wide range of applications, from industrial processes to consumer appliances. It consists of two different metal wires joined at one end (measurement junction) and connected to a measuring instrument at the other end. Thermocouples are valued for their durability, wide temperature range, and simplicity.

Thermocouples can measure both AC and DC temperatures. They do not have a polarity and can measure temperature changes regardless of the current direction.

The function of thermocouple wires is to connect the thermocouple sensor to the measuring instrument or control system. These wires must be made from the same materials as the thermocouple junction to maintain accuracy and reliability in temperature measurement.

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