Flow metering circuit and method

Details Flow metering circuit and method Flow metering circuit and method

1983-12-15

1985-08-27

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Using rotating member with particular electrical output or...

324166, G01F 1500

Patent

active

045370818

ABSTRACT:
A circuit arrangement and method for use with a flow metering device for reliably converting a multiphase flow signal including a plurality of input phase signals into a multiphase output signal accurately representing the amount and direction of fluid flow. From each of the input phase signals is derived a sequence of instantaneous graduated reference levels. Each of the input phase signals is compared with an associated sequence of reference levels. A first pulse train is provided when an input phase signal crosses its associated reference level in an ascending direction and a second pulse train is provided when the reference levels are crossed in a descending direction. The amount and direction of fluid flow is then determined from the combined pulse trains generated by the level crossings of each of the input phase signals.

REFERENCES:
patent: 3605729 (1971-09-01), Liu et al.
patent: 3728565 (1973-04-01), O'Callaghan
patent: 3922525 (1975-11-01), Kozak et al.
patent: 4450403 (1984-05-01), Dreisetl et al.

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