Low-density cartridge heaters

In contrast to high-density cartridges, low-density cartridges are used at temperature not exceeding 300°C. Power density is also reduced, no more than 5 Watts per square centimeter. We can also offer those cartridges with distributed power.

As an option, Electro-Therm cartridges can be fitted with a Thermocouple or Thermistor to control and limit temperature.

Low-density cartridge heaters are available on request.

Recommended use of cartridge heaters:

Our cartridge heaters are carefully tested, piece by piece. However, their service life depends essentially on the conditions of use.

Here are 10 important points to consider, to ensure proper operation.

• Cartridges must be placed in calibrated holes using a reamer.
• The entire cartridge must be in contact with the metal (i.e., no lack of metal in the bore), with only the ceramic head protruding.
  
• If possible, the hole should be through-hole to facilitate cartridge insertion and removal. At the end, the through hole can be of a smaller diameter.
• Cartridge life also depends on the load, so it's better to have more cartridges, but less powerful ones.
• Our heat-resistant anti-friction products make cartridge assembly and disassembly easier. It also improves heat transfer, but be careful not to apply it to the ceramic head or wires.
• Those cables must be protected against vibration and shock at the cartridge output, to prevent damage.
  
• To avoid excessive thermal inertia, which could cause the heater to overheat, the temperature control sensor should be positioned approximately 10mm from the cartridge.
• Electrical connection cables must be protected against fluids such as water, lubricants, oil, plastic, etc., which could cause leakage currents or ignition at the conductor output.
• When using several cartridges next to each other, the distance between them must be at least one diameter.
  
• Cartridge heaters must be stored in absolutely dry conditions, or in hermetically sealed plastic bags.