A ceramic thermocouple is a type of temperature sensor that is made from ceramic materials and used to measure high temperatures in harsh environments. Ceramic thermocouples are widely used in industrial applications, including in furnaces, kilns, and other high-temperature equipment. Ceramic thermocouple consist of two different types of metal wires that are welded together at the tip. When the tip of the thermocouple is exposed to heat, a voltage is generated between the two wires.