SHEATHED TUBULAR IMMERSION HEATERS
The PTFE rod heaters GALMAFORM are designed specially as direct electric heaters for the use in plants and tanks where minimum physical size and excellent resistance to aggressive process liquids are required. The very good chemical resistance is achieved by a special coating of the rods with PTFE (Polytetrafluorethylene).
The black PTFE compound coating of the rod heaters GALMAFORM (U-FC) improves the thermal conductivity and ensures better transfer of heat to the liquid. This permits a higher rated power, compared with heaters with white PTFE coating, in the same physical dimensions.
The white PTFE coating of the rod heaters GALMAFORM (U-FK) is also suitable for use in clean-room applications and in the foodstuffs industry (physiologically benign). The pure white, electrically insulating PTFE coating prevents metal reduction, which means that these rods can also be used for heating of autocatalytic (chemical) electrolytes.
The rod heaters consist of a stainless-steel heater tube coated with PTFE and with the electrical connections at one end. The contact box and the PTFE cable are welded together with a gas-tight seam, which means that they are completely submersible. The heated length of the rod (minimum immersion depth) is indicated by a permanent ring-shaped mark. The rod is not heated above this mark.
Even in applications where the liquid level varies greatly, the heated part of the rod must always be submersed! The distance pieces ensure that the necessary gap between the rod heater and the wall of the tank is maintained.