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Heater humidifiers NA

Immersed heater humidification is becoming increasingly requested in work specifications where:
• humidity must be controlled precisely (museums, laboratories, clean rooms);
• periodical maintenance needs to be minimised (using demineralised water).
• water quality is not constant or is problematic (for example, aboard ships);
Immersed heater humidifiers, unlike immersed electrode units, can operate on demineralised water, as they do not exploit the electrical conductivity of water. Periodical maintenance can therefore be greatly reduced, due to the minimum formation of scale. Weighing against this, the resistive elements must always be completely immersed in the water, to avoid overheating (unlike with electrode units, in which the water level is adjusted to modulate the flow-rate of steam).
The operation of an immersed heater humidifier then requires water level sensors (to ensure complete immersion), as well as components (solid state relays) that precisely modulate steam flow-rate through duty cycling.
These characteristics make heater units more complex than their counterparts with electrodes, yet independent of the water characteristics water, and with much more precise modulation. In addition, as heater humidifiers are intrinsically subject to overheating, the quality of design and the presence of safety systems are essential to ensure reliable service over time.
The CAREL immersed heater humidifier solution is heaterSteam.