L19_Themocouple |Working Principle and Construction|Seebeck effect|Variation in Thermo emf with temp

L19_Themocouple |Working Principle and Construction|Seebeck effect|Variation in Thermo emf with temp

A thermocouple is a sensor for measuring temperature. This sensor consists of two dissimilar metal wires, joined at one end, and connected to a thermocouple thermometer or other thermocouple-capable device at the other end. When properly configured, thermocouples can provide temperature measurements over wide range of temperatures.
In the 1820s, the Estonian-German physicist Thomas Johann Seebeck discovered that when a temperature difference between two dissimilar electrical conductors occurs, a corresponding voltage difference will be produced. This phenomenon is now known as the Seebeck or thermoelectric effect. The “Seebeck effect” is responsible for the behavior of thermocouples.
Seebeck effect is reversible why?
what is neutral temperature?
what is inversion temperature?

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keywords:
thermocouple
thermocouple working
thermocouple construction
Seebeck effect
thermocouple basic principle
variation in thermoelectric emf with temperature
neutral temperature
inversion temperature
graph of emf vs temperature
thermoelectric series




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