artridge heater with thermocouple is also called temperature measuring cartridge heater, which is a cartridge heater with built-in thermocouple. It means that K-type or J-type thermocouple is placed inside the heating tube, which can be used to detect the temperature of the heating tube.
The Jaye custom electric cartridge heaters can be with two type of thermocouples:
Built in K-type thermocouple temperature range: - 200 ~ 800 ℃
Built in J-type thermocouple temperature range: 0 ~ 400 ℃ http://www.jaye-heater.com