Abstract: A degassing and water removal apparatus is used in combination with the testing or replacement of dielectric oil in an RF transmitter. The apparatus comprises at least one ultrasound transducer in vibrational communication with a bulk oil sample held in a tank having a reduced internal air pressure. The tank has fluid connections to the RF transmitter through which oil from the transmitter is drained to the tank and through which the ambient air pressure in the transmitter is reduced. A fluid pump is used to pump the oil from the tank back to the RF transmitter. In a method of using such an apparatus, the RF transmitter is held at reduced internal pressure during the return of oil thereto, so that the oil does not dissolve gases in the atmosphere internal to the RF transmitter.

Abstract: An ultrasonic fluid processing method is provided for cavitation and processing a first fluid with a second fluid in a sonication or cavitation zone. The method is useful for preparation of emulsions for chemical and pharmaceutical applications, to gasify liquids for purification, for chemical reactions, to accelerate chemical and physical reactions, and to suspend fine particles. The method includes the steps of, forming a vibration element having an axis and with an adjacent sonication or cavitation zone, enclosing the element and zone in a sealed cavity having a first fluid passage, forming a second fluid passage coaxially with the vibration element and disposed adjacent to the sonication zone, and forming a third fluid passage coaxially with the vibration element and disposed adjacent to the sonication zone. With this method, problems with the control of proportions and amounts and uniformity of parts of fluids being mixed or processed are avoided.

Abstract: An ultrasonic fluid processing system is provided for cavitation and processing a first fluid with a second fluid in a sonication or cavitation zone. The system, in a preferred embodiment, includes a converter with a power supply, a vibration means connected to the converter and defining at least in part a sonication or cavitation zone and a cell having walls forming a cavity. The cell also has a first inlet means with an inlet opening for providing a first fluid to the cavitaito zone. The cell also has a second inlet means with an inlet opening for simultaneously providing a second fluid to the cavitation zone. The cell has an outlet opening for exit of fluid after processing and cavitation.