Fluid velocity measuring method and apparatus

Details Fluid velocity measuring method and apparatus Fluid velocity measuring method and apparatus

1985-04-15

1986-10-14

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 166

Patent

active

046165100

ABSTRACT:
An acoustic flow meter in which a plurality of different frequencies are transmitted in both upstream and downstream directions, and corresponding differences in transmission phase-delays due to such frequency changes detected and used to compute the fluid velocity by the formula ##EQU1## when L is the distance between transmitter and receiver, M.sub.D is the slope of the graph of phase delay vs. transmitted frequency for the upstream direction of transmission, and M.sub.u is the corresponding slope for the downstream direction. A signal processor using a least-squares algorithm is preferably employed to obtain best values for M.sub.D and M.sub.u from the several values of phase-delay difference produced by the several different transmitted frequencies.

REFERENCES:
patent: 2921467 (1960-01-01), Hedrich et al.
patent: 3165928 (1965-01-01), Poulos
patent: 3641817 (1972-02-01), Dory
patent: 4011755 (1977-03-01), Pedersen
patent: 4262545 (1981-04-01), Lamarche et al.
patent: 4389899 (1983-06-01), Krause
patent: 4478088 (1984-10-01), Loveland

Affiliated with

Also associated with

Rating

Fluid velocity measuring method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid velocity measuring method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid velocity measuring method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1334273