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4.1 How the humidifier works
NORDMANN humidifiers use ordinary tap water to produce steam.
The water is converted directly into steam in a steam cylinder by
electrode heating using electrical energy. In so doing, the water acts
as the electrical resistance. Vaporisation occurs at atmospheric pressure
(non-pressurised).
The electronic control system, with its highly-integrated microcontroller,
regulates the vaporisation process in accordance with a new principle
developed by NORDMANN which allows rapid output changes to be made.
The humidifier adapts itself fully automatically to the quality of the water
used. Due to this ability to set the optimum water concentration in the
steam cylinder, the smallest of adjustments to the water level can effect
a change in the steam output. Therefore, the unit reacts quickly and
accurately to any setpoint changes. Because of its ultimate degree of
efficiency, this new type of control system ensures perfect drainage,
i.e. the process of water deconcentration in the cylinder.
The use of fuzzy logic technology improves the controllability. The
microcontroller of the NOVAP 3000 series works with fuzzy-logic
algorithms. This regulates the conductivity or mineral concentration in
the steam cylinder and achieves ideal operating conditions while,
at the same time, maximising the operational reliability. Furthermore,
the output fluctuations which occur during normal operation are kept
to a manageable minimum by the automatic water-intake and drainage
functions.
4. Putting into operation
S
E
E
Fig. 32
Hydrodynamic
filling cup
S = maximum-level sensor
E = electrode
