Title: Apparatus for measuring mass flow of fluids

Abstract: An apparatus for measuring the mass flow of fluids comprises a fluidic oscillator which oscillates at a frequency dependent on the volume flow rate through the oscillator, a circuit is responsive to signals which are respectively dependent on the oscillating frequency and on the pressure difference across the oscillator to generate an output signal proportional to 2Sc.sub.o.sup.3/2 A.sub.o.sup.2. P/f where S = strouhal number of the oscillator c.sub.o = orifice coefficient of the oscillator A.sub.o = equivalent area of the oscillator P = pressure difference across the oscillator f = frequency of oscillation.

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Inventors: Thomas, Alan (Stratford-on-Avon, EN)

Application Number: 727229
Filing Date: 1976-09-27
Publication_date: 1977-09-27
Assignee: Lucas Industries Limited (Birmingham, EN)
Primary Class(es): 73/861.03 73/861.19
Other Classes:
US Patent Ref:

3785204	Jan, 1974	Lisi	73/194.
3889534	Jun, 1975	Grant	73/194.

Other Refs:
Primary Examiner: Goldstein, Herbert
Assistant Examiner:
Attorney: