Sonics VC100 100-watt (1992) User Manual download pdf (Page 10)

USING THE ULTRASONIC PROCESSOR

The speed control on an automobile, can, to a certain extent, be compared to an

Ultrasonic Processor. The speed control is designed to maintain the vehicles rate

travel constant. As the terrain changes, so do the power requirements. The speed

control senses these requirements, and automatically adjusts the amount of power

delivered by the engine in order to compensate for these ever changing conditions.

The

greater the terrain rate of incline and greater the resistance to the movement of

the vehicle, the greater the amount of power that will be delivered by the engine to

overcome that resistance.

The Ultrasonic Processor is designed to deliver constant ampli

tude. As the

resistance to the movement of the probe increases, additional power will be delivered

by the power supply to ensure that the excursion at the probe tip remains constant.

Using a more powerful power supply will not deliver more power into the

liquid.

Rather, it is the resistance to the movement of the probe that determines how much

power will be delivered into the sample.

The AMPLITUDE control allows the ultrasonic vibrations at the probe tip to be set

to any desired level. Although the degre

e of cavitation 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 m

aintain 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 fully clockwise will not cause the

maximum power to be delivered to the sample. The maximum power 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.

This phenomenon can be demonstrated as follows: depress the probe down against a

piece of wood. The greater the down pressure, and consequent greater resistance to

the movement of the

probe, the greater the amount of power that will be delivered by

the power supply.

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Sonics VC100 100-watt (1992) User Manual Page 10