FLUIDIC OSCILLATOR AND METHOD FOR MEASURING THE VOLUME OF A FLUID FLOWING THERETHROUGH

摘要

A fluidic oscillator that is symmetrical about a longitudinal plane of symmetry (P) in which a longitudinal fluid flow direction is contained, the oscillator comprising: means (26b) for generating a two-dimensional jet of fluid that oscillates transversely relative to said longitudinal plane of symmetry (P); two ultrasound transducers (52, 54); and means (62-72) firstly for generating an ultrasound signal in the fluid flow travelling from one of said transducers towards the other, and secondly for receiving said ultrasound signal as modulated by the oscillations of the jet of fluid; and means (100) for processing the received signal so as to determine a volume-related quantity concerning the fluid that has flowed through said fluidic oscillator; characterized in that the ultrasound transducers (52, 54) are substantially in alignment with the longitudinal plane of symmetry (P).