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[MBA_NKBD_EN] Rev.: 10/2015
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5. General information
5.1 Technical terms
Transducer
:
Piezo ceramic transducer
Aerosols
:
Finely distributed material (solids or liquids) in air or other gases,
manifestations are e.g. in smoke, dust, vapour and fog
Demineralised water :
Pure water, permeate
Concentrate
:
Concentrated water, waste water of reverse osmosis system
5.2 Physical principles of piezo ceramics
If certain crystals are deformed by mechanical stress, electrical charges will build up proportional-
ly on their surface, producing electric field strength in the crystal.
Oscillation line - piezo ceramics
This effect was discovered by Pierre and Jacques Curie
in 1880. Even the reversal of this so-called piezoelectric
effect or piezo-effect is possible. The same materials
change their dimensions under the influence of an
electric field.
fig. 1 - Schematic sketch of piezo-effect
Ceramic piezoelectric materials are hard, chemically inactive and completely insensitive to humidity
or other atmospheric influences.
