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What is a thermocouple? I want to have all the required knowlege about thermocouples as I have seen questions on them in mock JEE Main and previous year BITSAT papers.

What is a thermocouple? I want to have all the required knowlege about thermocouples as I have seen questions on them in mock JEE Main and previous year BITSAT papers.

Grade:Upto college level

1 Answers

Akarsh Aithal
36 Points
10 years ago
A thermocouple is a temperature-measuring device consisting of two dissimilar conductors that contact each other at one or more spots. It produces a voltage when the temperature of one of the spots differs from the reference temperature at other parts of the circuit. Thermocouples are a widely used type of temperature sensor for measurement and control, and can also convert a temperature gradient into electricity. Commercial thermocouples are inexpensive,[2] interchangeable, are supplied with standard connectors, and can measure a wide range of temperatures. In contrast to most other methods of temperature measurement, thermocouples are self powered and require no external form of excitation. The main limitation with thermocouples is accuracy; system errors of less than one degree Celsius (°C) can be difficult to achieve.

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