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Design and function
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3.2 Control panel
Fig. 2
Operating elements
1 On/off button for switching the device on and off
2 Button for setting the heating temperature with temperature scale
3 Button for setting the power with percentage scale
4 Button for setting the sonication time with time scale
5 Start/stop button for ultrasound
3.3 Function
The ultrasound bath uses cavitation triggered by low-frequency
ultrasound. Piezoelectric oscillating systems are located on the
underside of the oscillating tank. The ultrasound generates strong
pressure fluctuations in the sonication liquid. Cavitation bubbles are
formed at the pressure minima. At higher ambient pressure around
the bubbles, they collapse very quickly. This results in strong local
microcurrents on the surfaces of the objects being treated. This
removes dirt from the surface of the objects. Dirt particles are
removed and fresh sonication liquid flows in.
The device uses SweepTec®, a technology in which the ultrasonic
frequency often fluctuates around the operating frequency. The
optimal operating frequency depends on the load, filling level, tem-
perature and type of sonication liquid. The operating frequency can
deviate significantly from the nominal frequency. SweepTec® cre-
ates an especially homogeneous ultrasonic field in the bath volume
for consistently optimal results.
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