What are Series Resistance Heaters?
These heaters consist of one or more electrically conductive
foils connected to an electrical supply. The circuit length and
the process temperature determine the operating resistance of
Series heaters, being purely resistive heating circuits, are highly
efficient with a unity power factor.
All of the heating effect is generated within a resistive metal
Sophisticated temperature and power regulation is available at
modest cost, whilst circuit health monitoring may be by direct
reading of resistance. Series resistance heating circuits are
most often available for operating temperature applications up
to 200°C and at power ratings up to 60W/m.
How do they work?
The available voltage is dropped across the electrical resistance
represented by the series heater obeying Ohms law and resulting
in a heating effect. More resistance results in a low heat and
less resistance increases the heat output.