The cartridge heater is of pipe form, from one end of which lead wires are drawn out. Effective heating is obtained simply by inserting it into the substance to be heated.
A cartridge heater is a tube-shaped, heavy-duty, industrial heating element applied in the process heating industry. Our heater is customized to a specifc watt density, based on customers’ intended application.
Points to be observe when using Cartridge Heater
Application
• Seal bars • Injection molding manifolds • Rubber molding • Food service industry • Immersion tank heating • HVAC compressors • Fuel cells • Semiconductors • Medical devices • Extrusion • Die casting • Hot melt adhesives • Plastic welding • liquid heating
• For cartridge heaters with surface loads up to 20 W/cm the receiving hole must be drilled with small tolerance and a sliding ft is necessary. • The drilled receiving bores for cartridge heaters must be cylindrical, crossing bores and shrinkages cause localization of heat and shorten the useful life of the heating elements. • The end of the cartridge heater with the connection lead should be protected against liquid and pasty media (lubricants, oil, synthetic materials, etc) because otherwise, leakage currents and possibly flashover could occur at the outlet connection terminals. • The connection leads should be protected against mechanical vibrations close to the outlet of the cartridge heater. • If possible, control of the operating temperature should be realized by means of continuous regulators, by controllers with pulse width modulation or an electronic power control device. A control system with long timelag often causes thermal overload of the heating elements. For this reason also the temperature sensor must be fitted in close proximity to the cartridge heater about 10mm apart. • When using several cartridge heaters the distance between two consecutive cartridges should be at least equal to the cartridge diameter. • If heating elements are to be stored for long periods they should be housed in absolutely dry rooms or enclosed in plastic bags which are hermetically sealed.
