Ceramic Infrared Emitters. The ceramic heater is an efficient and robust heater that provides medium and long wave infrared radiation. It is used in applications ranging from thermoforming or preheating, to the treatment of foundry black. Almost all materials that have to be dried or heated have the maximum absorption between 3 and 7 microns. The ceramic heater was developed with this idea, and it is the reason why it can be applied to so many diverse cases of the industrial process. The ceramic heater is manufactured using a specialized process, which requires an alloy of an electrical resistive wire, which is fused to the ceramic body. Subsequently, the ceramic body is given a layer of enamel to protect it from humidity. In addition, it protects the heater from corrosive and atmospheric attack. In this way, the ceramic resistors optimize the maximum absorption characteristics, operating at temperatures ranging from 300 °C to 750 °C, producing emission at a wavelength of 3 to 7 microns.