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Technical Information
The need to degas
In order to allow optimum ultrasonic activity, the gases present in ordinary tap water need to be
driven out of the cleaning solution.
The time needed to degas the liquid varies depending on the amount of gas present in the liquid
and the quantity of water in the tank. Ultrawave recommends a degas period of at least 10
minutes, although larger tanks will require a longer degas period.
During the degas cycle, you will see bubbles of gas forming on the inside of the tank, and slowly
rising to the surface. Degassing is complete when you can no longer see these bubbles. Another
indication of increased "cold-boiling" at the liquid surface indicates that the liquid is degassed.
Once the liquid is degassed, the ultrasonic cleaner is ready for use.
The effect of heat
Heating the liquid in the ultrasonic cleaner will aid
the cleaning process.
Normally a temperature of between 30 to 70°C is
sufficient to accelerate the process. You will see
from the graph that optimum cleaning will be
obtained at 60°C
If you are using your ultrasonic cleaner to clean medical equipment, it is recommended to limit
the fluid temperature to 40°C. This will avoid "baking" proteins.
Ultrasonic activity itself will heat up the liquid at a rate of approximately 10-15°C per hour if in
continuous use.
Cleaning time
Cleaning time will depend on application, type and amount of contamination.
An indication of cleanliness is when stains are no longer visible, and contamination no longer
appears in a stream from the item being cleaned.
60
40
20
0
13
Average power
Av Power
-3dB point
Temp (Deg C)
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