Cartridge heaters are an excellent solution to the need to heat particular applications with critical operating conditions.
These types of heaters can be designed, for the type of application, with high specific power and excellent reliability.
Cartridge heaters with low power density reach specific powers up to 6 ÷ 8 watts/cm2, unlike heaters with high power density that can reach up to 15 ÷ 20 watts/cm2, with temperatures that can reach 700° C.
This type of heater is widely used in particular applications with maximum operating temperatures up to 700° C, such as:
Cartridge heaters are designed with the following manufacture guidelines:
On request, Rart can provide threaded connections of the heater on the process, based on the diameter of the defined outer shell.
The cartridge heaters can also contain temperature detection sensors, to be used as a maximum alarm, to ensure a longer service life on the operation of the product. The sensors applied are Constantan iron “J” type thermocouples positioned near the bottom of the heater and isolated from the external metal sheath.
With this type of product, compared to the traditional heater, two main results are obtained:
Wide range of diameters, powers and lengths for every need with the possibility of special solutions on request.
The cartridge heaters are applied for the following reference sectors: