9
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.
During the de-gas cycle, you will see bubbles of gas forming on the inside
of the bath, 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 bath is ready for use.
The effect of heat
Heating the liquid in the bath
will aid the cleaning process.
Normally a temperature of
between 30 to 60°C is sufficient
to accelerate the process. You
will see from the graph below
that optimum cleaning will be
obtained at 60°C
If you are using your bath to clean medical equipment, it is recommended
to limit the fluid temperature to 35°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.
General light contamination should be removed in less than 10 minutes.
An indication of cleanliness is when stains are no longer visible, and
contamination no longer appears in a stream from the item being cleaned.
Average power
0
20
40
60
15
25
35
45
55
65
75
85
Temp (Deg C)
P
o
w
e
r
(W
a
tt
s
/I
n
c
h
^
2
)
Av Power
-3dB point
