The sensor for temperature control should be placed between the heaters and the working surface of the part. Control of power is important in high Watt density applications and maximum allowable Watt density from the graph is selected using the temperature of the part which is approximately 1/2″ away from the heaters. Wide excursions in the temperature of the working parts and the heater can be caused by the frequent utilization of the On-off control. Thyristor power controls effectively eliminate on-off cycling and therefore are valuable in extending the life of high Watt density heaters. There are various types of sensors and temperature controllers that can be used depending on the application. The surface mount temperature sensors are popular sensor types for cartridge heater applications. Thermistors, RTD or Thermocouple are available with the ability to be cemented to the surface being heated or with an adhesive
Cartridge heaters are known for their excellence performance, conformance to international performance norms, long service life, availability of different constructions and configurations, availability with internal thermo-couples and Lead wire options, provision with fittings and flanges.
Cartridge Heaters are commonly used in hot stamping, shoe machinery, dies and molds, hot runner mold, plastic processing machinery, packaging machinery, food processing machinery, heating gases and liquids, labeling machineries and a lot of other applications.