What is a Thermocouple?
A thermocouple is a type of temperature sensor. It is made by joining two wires of different metals at one end to form a measuring junction. When this junction is heated or cooled, it produces a small electrical voltage. This voltage can be measured and converted into a temperature reading using standard charts.
Various thermocouple types exist, each with different properties regarding operating temperature, robustness, and suitability for specific environments. Common "Base Metal" varieties, such as Types J, K, T, and E, are widely used. For extremely high temperatures, "Noble Metal" thermocouples like Types R, S, and B are the preferred choice.
Due to their affordability, durability, and wide temperature capabilities, thermocouples are found in a vast range of applications. They are essential in industrial sectors including Power Generation, Oil and Gas, and Pharmaceuticals, as well as in common household devices like ovens, heaters, and toasters.