Patent ID: 8881604
Filing Date: 2014-11-11
Classification: G01F

Abstract:
1. A measuring system for flowing fluids, said measuring system comprising: a measuring transducer of the vibration type, through which, during operation, a fluid flows, and which produces oscillation signals corresponding to parameters; and a transmitter electronics electrically coupled with said measuring transducer for activating said measuring transducer and for evaluating oscillation signals delivered by said measuring transducer, said measuring transducer including: at least one measuring tube for conveying flowing fluid, at least one electro-mechanical oscillation exciter for actively exciting and/or maintaining vibrations of the at least one measuring tube in a wanted mode, and at least a first oscillation sensor for registering vibrations at least of the at least one measuring tube, and for producing a first primary signal of the measuring transducer representing vibrations at least of the at least one measuring tube; wherein: the transmitter electronics is adapted to generate, using a first signal component of the oscillation signal produced by said at least one oscillation sensor and representing a bending oscillation mode, in which the at least one vibrating measuring tube executes bending oscillations exhibiting at least one oscillatory antinode more than in the case of the bending oscillations in the wanted mode and using a second signal component of the oscillation signal representing a bending oscillation mode, in which said at least one vibrating measuring tube executes bending oscillations with at least one oscillatory antinode more than in the case of the oscillation mode represented by the first signal component, a cavitation report signaling an occurrence of cavitation in the fluid.