In our thermocouple technical reference section you will find resource material covering all aspects of thermocouples, from basic theory, product selection to accuracy, colour code and output reference charts.
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1. What is a Thermocouple (How they work)?
A thermocouple is a sensor used to measure temperature in a number of processes. Thermocouples consist of two wire legs made from dissimilar metals which are fixed together at one end, creating a junction. When this junction experiences a change in temperature a voltage is created, this voltage can then be measured and referenced back to the temperature. This is also known as the "Seebeck Effect".