Fluid flow meter

Details Fluid flow meter Fluid flow meter

1977-02-28

1978-04-11

Queisser, Richard C.

Measuring and testing

Volume or rate of flow

Area-velocity integrating

G01F 100

Patent

active

040832465

ABSTRACT:
A fluid flow rate meter is disclosed for measuring the flow of fluid in a partially filled conduit or channel, including an electromagnetic probe adapted for mounting in the conduit below the low water mark thereof to produce a sensed velocity signal, and a liquid height pressure transducer including an air tube having a bubble-producing opening adjacent the probe for generating a liquid height signal that modifies the sensed velocity signal to produce a resultant signal that corresponds with the average velocity of fluid flow, whereby a more accurate measurement of the rate of fluid flow is obtained. The average velocity signal is multiplied with a conduit area signal obtained from the height signal by a function generator circuit which takes into account the maximum diameter of the conduit (or maximum height of the channel). A percent flow signal is modified by a second function generator in accordance with the area of the conduit.

REFERENCES:
patent: 1630134 (1927-05-01), Puccioni
patent: 3638490 (1972-02-01), Buettner
patent: 3757576 (1973-09-01), Rolff et al.

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