The cutaway view shows the tubular heater’s basic construction.
Tubular Heating Elements being filled with MgO insluating powder
Element Watt Density is the wattage dissipated per square inch of the element sheath surface and is critical to the proper heating of the application and to the life expectancy of the heater. The Watt Density is calculated with the following formula:
For a particular application element watt density will govern element sheath and internal resistance wire temperature. Factors to consider when choosing a suitable watt density are:
For additional information and help please contact Tempco.
Tubular heating elements have an Industry Standard Resistance Tolerance of +10%, −5% which translates to a Wattage Tolerance of +5%, −10%. Consult Tempco if tighter tolerances are required for your application.
When heating any substance it is critical to match the heater watt density, operating temperature and sheath material to the specific medium being heated. Failure to do so will result in premature heater failure and/or unsafe conditions.
Roll Reducing Mill compacts the MgO powder
Specifications & Tolerances
Typical Bend Formations (PDF)
Sheath Material Selection Guide (PDF)
Tubular Heater Photo Gallery
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