Tempco Electric Heater Corporation products

As a standard, Cast-In Band Heaters are manufactured in aluminum alloys because this material provides very good thermal conductive properties. For applications requiring higher operating temperatures and/or higher watt densities, bronze or brass alloys can be used. Cast-In Band heaters can be made with one of two cooling methods: Liquid-cooled or Air-cooled. Used heavily in plastics extrusion processes, the cooling function within our cast-in band heaters is important for maintaining the proper temperature of the barrel. Precision machining of the band heater`s inside diameter yields superior heat transfer between the heater and machine barrel and is finished to customer specifications.

Tempco offers three standard Circulation Heater designs that are compact lightweight unit used for heating gases or liquids. The material being heated is pumped through the coiled seamless 316 SS tubing which has been cast into an aluminum body that acts as the heat exchanger. A cartridge or tubular heating element is the heat source. The material being heated never comes into contact with the heating element.

Standard sheath material is 321 Stainless Steel which provides good thermal conductivity, and resistance to corrosion and scaling. Welded end disc made from the same material as the sheath provides a positive seal against moisture and other contaminants. Grade “A” Nickel-Chrome resistance wire precisely wound on a high purity magnesium oxide core places the resistance wire as close to the inside of the sheath as possible. A high purity Magnesium Oxide (MgO) powder is used to fill all remaining space inside the sheath. Heater is then swaged, which compacts the magnesium oxide grains into a solid mass. The standard termination for is Type N, 10" (254 mm) long nickel conductor lead wires externally connected to solid conductor terminal pins.

Minimum Bending Radius; Minimum bending radius for all mineral insulated cable heaters is two times the sheath diameter.