High-frequency oscillatory ventilation utilizes oscillations generated by a piston pump or a diaphragm oscillator driven by a motor.It produces a sinusoidal or somewhat erratic pressure waveform that gives the expiratory phase its unique active characteristic.
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Aug 05, 2019 High frequency provides a crisp, clear picture of the bottom with the tradeoff of less depth range. For best resolution, choose 800kHz or 455kHz transducers. Lower frequency transducers, with longer waves and fewer waves per second, show less detail (larger fish) but carry more energy and penetrate to greater depths. One sound wave at 50kHz is ...
The transducer is a small hand-held device that resembles a microphone. Some exams may use different transducers (with different capabilities) during a single exam. The transducer sends out inaudible, high-frequency sound waves into the body and then listens for the returning echoes. The principles are similar to sonar used by boats and submarines.
48-hour idling test machine before leaving the factory. You can take the materials to the factory test machine. We will customize the solution according to your needs. Free Installation.
