Rev. 6-12
10
as the load increases but the amplitude remains the same.
The AMPLITUDE control allows the ultrasonic vibrations at the probe tip to be set to any desired level.
Although the degree of cavitation/ultrasonic energy required to process the sample can readily be
determined by visual observation, the amount of power required cannot be predetermined. A sensing
network continuously monitors the output requirements, and automatically adjusts the power to maintain
the amplitude at the preselected level. The greater the resistance to the movement of the probe due to
higher viscosity, deeper immersion of the probe into the sample, larger probe diameter or higher
pressure, the greater the amount of power that will be delivered to the probe. Setting the AMPLITUDE
control to its maximum will not cause the maximum power rating of the unit to be delivered to the sample.
The maximum power (705 watts) that the Ultrasonic Processor is capable of delivering will only be
delivered when the resistance to the movement of the probe is high enough to draw maximum wattage.
It is the intensity of cavitation that measures the effectiveness of the sonication, not the total power
applied to the system. Intensity is directly related to the amplitude of the radiating face of the tip or horn.
It is amplitude that must be provided, maintained, and monitored. The unit provides controlled amplitude
under varying load conditions in order to give reproducible results.