250 - 450 Sonifier Chapter 2: Introduction
User’s Manual Principle of Operation
100-413-016 Rev. C 2 - 3
a solution to be processed at full ultrasonic intensity, while limiting temperature
build-up - especially valuable when processing heat-volatile solutions and
temperature-sensitive material.
In Continuous Mode, the Sonifier can be set up for continuous duty.
The 200 and 400 Watts output power specified for the Models 250 and 450,
respectively, is their maximum power capability. The actual power developed for
any application will depend upon the load on the horn face.
The Sonifier is a constant amplitude device, i.e. as the load or pressure on the
horn face increases, the power supply will develop more power to maintain the
amplitude for any given output control setting. When the horn is operated in air,
the horn is subjected to minimum pressure and minimum power.
The load will increase when the horn is immersed in a liquid, the more viscous
the liquid, the higher the load and the more power required. If a flow through cell
which can be pressurized is used, thereby applying pressure on the horn, even
more power will be required.
For any given application, more power will result when a horn of higher
amplitude or with larger radiating surface is used or when any horn is driven at
higher amplitude by increasing the output control setting.
System protection constantly monitors various operating parameters of the
power supply. If it senses conditions that could cause the power supply to
overload it will shut the power module down. To reset the power supply after an
overload condition has been sensed turn the power switch off and then turn it
back on.
Autotune optimizes the operating frequency of the power supply so that it is
consistent with the acoustic tooling. To facilitate the auto tune process the power
supply performs a seek function upon first powering up the unit. When first
powering up, the unit will perform a brief cycle at low amplitude so that the
power supply can determine information about the acoustic tooling including it’s
operating frequency.
The output meter on all Analog Sonifiers now reports Watts. It is no longer
necessary to use the tables in the manual to determine output watts based on
meter reading vs. output control setting.
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