Bi-directional flow transducer

Details Bi-directional flow transducer Bi-directional flow transducer

1981-01-26

1983-01-04

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

Using differential pressure

7386171, G01F 122

Patent

active

043667180

ABSTRACT:
A bi-directional fluid flow transducer includes a hollow cylindrical housing which slidably receives a movable hollow cylindrical core which coaxially receives a fixed rod or valve member. A pair of springs are biased to urge the core to a neutral position. The core is displaced from its neutral position in the direction of fluid flow by an amount linearly proportional to the rate of fluid flow. An LVDT coil and circuit generate an output signal which represents the amount and direction of core displacement.

REFERENCES:
patent: 2609831 (1952-09-01), MacGeorge
patent: 2755664 (1956-07-01), Chapman
patent: 3076335 (1963-02-01), Rosaen
patent: 3304780 (1967-02-01), Lee et al.
patent: 3528288 (1970-09-01), Scourtes
patent: 3623046 (1971-11-01), Scourtes
patent: 3805611 (1974-04-01), Hedland
patent: 4003255 (1976-12-01), Spencer
patent: 4041758 (1977-08-01), Stenberg
patent: 4205592 (1980-06-01), Haussler
Hedland Products, "Hedland Flowmeter".
Schaevitz Engineering, "AC LVDTs With Special Physical Configuration".
Fink, ed., "Electronics Engineers Handbook", McGraw-Hill, 1975, pp. 17-55 and 17-56, (FIGS. 17-81).

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