Five deferent types of detective transducers and methods have been used to detect the cavitation process in the centrifugal pump. There are underwater soundsensor(sound reciever) , noisedetector, pressure pulsation sensor, vibratesensor and conventional cavitation testing (the head down for 3%). To compare cavitation process curves of a centrifugal pump by different detected method, the different performance for different stage of cavitation have been gained. Auther considered that those results could be used to pump operated system to provent large events induced by cavitation.
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