Air-gas resistances

Heating elements with external protection are designed and manufactured to meet the requirements of industrial processes for obtaining air or gas flows at controlled temperature, or for maintaining a specific temperature in working environments.
They are especially designed for use in ventilation ducts or air conditioning systems. They can also be used in the open air for static heating of air or gases.
They can be provided on the outside, on the protective sheath, with very fine dispersion ribs, which favour an optimal thermal exchange, but this system cannot be used when the working environment contains dust or suspended particles and will implicitly lead to the use of resistors with smooth surfaces of the external protection.