Monday 29 June 2015

Thermocouple

A thermocouple is a temperature measurement sensor consisting of two dissimilar metals joined together at one end.

Thermocouple wire is used in a thermocouple from the sensing point to the cold junction compensation point (or reference point). It is the difference in the millivolt output from the sensing point to the reference point that provides the temperature measurement.

Different thermocouple types require different alloy wire combinations. Some of the more popular thermocouple wire & cable types include type E (Chromel/Constantan), Type J (Iron/Constantan), Type K (Chromel/Alumel), and type T (Copper/Constantan).

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