Fluidic oscillator and a method of measuring a volume-related qu

Details Fluidic oscillator and a method of measuring a volume-related qu Fluidic oscillator and a method of measuring a volume-related qu

1996-12-17

1999-01-26

Chilcot, Richard

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 166

Patent

active

058640673

ABSTRACT:
A fluidic oscillator is symmetrical about a longitudinal plane of symmetry in which a longitudinal fluid flow direction is contained. The oscillator generates a two-dimensional jet of fluid that oscillates transversely relative to said longitudinal plane symmetry. An ultrasound signal is generated in the fluid flow travelling from one transducer towards another. The ultrasound signal is received and modulated by the oscillations of the jet of fluid. The received signal is processed to determine a volume-related quantity concerning the fluid that has flowed through said fluidic oscillator. The tow ultrasound transducers are substantially in alignment with the longitudinal plane of symmetry.

REFERENCES:
patent: 4182172 (1980-01-01), Wennberg et al.
patent: 5363704 (1994-11-01), Huang
patent: 5396808 (1995-03-01), Huang et al.
patent: 5503035 (1996-04-01), Itoh et al.

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