are used for engine management on aviation systems. A type J thermocouple is used for exhaust gas temperature (CHT) and a type K sensor is used for cylinder head temperature (EGT) measurement. This form of sensor is installed on the leanest cylinder of the engine. Sensors manufactured with bayonet clamps are used when placing the probe in the exhaust stack is desired. The operating range is typically 1200ºF to 1700ºF.