What Is a Thermocouple?

Thermocouples consist of a pair of dissimilar metal wires joined typically at one end, producing a net thermoelectric voltage between the open pair according to the size of the temperature difference between the ends, the relative Seebeck coefficient of the wire pair and the uniformity of the wire-pair relative to the Seebeck coefficient. Thermocouples measure a relative temperature not an absolute temperature. In other words, a thermocouple requires a reference of known temperature. Commonly commercialized thermocouples utilize and independent sensor, such as a thermister to provide the reading of the reference temperature. [read more]

Why use Thermocouple EGT probes from The Sensor Connection?