The Surface Electric Radiant Tube (ERT)® system and the Prolectric® is a versatile heating system for heat processing equipment that uses radiant heat. This system is capable of using the radiant tube’s electrical resistance property of the alloy as the heating source to replace your current gas fired burner within the tube. This electric conversion allows you to choose the most sustainable energy mode for your furnaces that use radiant tubes as their heat source.
For the ERT, thealloy radiant tube used with gas firing becomes an electrical resistor when powered by a low voltage, high current step-down transformer; in our case, a Variable Reactance Transformer (VRT). For the Prolectric, a stainless steel tube is energized and provides uniformity and long-life in carburizing applications. For both cases, the tube ends are connected to the transformer supplying a tunable current for the particular electrical input.