Electric heater P&ID symbol

Electric heater

ISO 10628-2 (groups 3-5, heat exchangers, furnaces, cooling towers) / PIP PIC001 / TEMA (X2070 electrical heating)
Drawn as
A horizontal vessel with a heating element drawn as a zig-zag (resistor) inside, and a terminal box at one end.
Meaning
Electric process heater: fuel-gas superheaters, regeneration-gas heaters, start-up heaters. Becomes electric-heater.
Variants
  • ISO 10628-2 shows a small resistor rectangle on the vessel side
  • Some legends write "EH" or "ELECTRIC" inside
Tags
E · H · EH