what is thermo coupler and how it works

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what is thermo coupler and how it works..

Thermocouple consists of two dissimilar metals connected at one end. When we heat that junction an emf will be introduced at other end and this induced emf is directly propotional to the metal temperature. There are different types of thermocouples available in market which are B, E, J, K, N, R, S and T type.

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what is thermo coupler and how it works..

Answer / amit antil

The working principle of a thermocouple depends on the thermoelectric effect.If two dissimilar metal are joined together ,so as to form a closed ckt there will be two junction where they meet each together.If one of these junction is heated then a current flow in the ckt.
The amount of the current produced depends on the difference in temp b/w the two junctions.

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