Cyclic motion detection arrangement

Details Cyclic motion detection arrangement Cyclic motion detection arrangement

1988-06-24

1989-07-18

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Expansible chamber

7386177, 73272R, G01F 320

Patent

active

048481483

ABSTRACT:
An arrangement for detecting cycles of operation of a positive displacement diaphragm gas meter sets up a magnetic field which is directed through the non-magnetic housing of the meter toward an internal cyclically moving ferromagnetic element of the meter. The strength of the magnetic field is varied as the ferromagnetic element moves toward and away from the source of the magnetic field. The strength of the magnetic field is detected and an output signal representative thereof is processed to define cycles of operation of the meter.

REFERENCES:
patent: 3636767 (1972-01-01), Duffy
patent: 4294262 (1981-10-01), Williams et al.
patent: 4488113 (1984-12-01), Heemstra
patent: 4565090 (1986-01-01), Gotanda
patent: 4658654 (1987-04-01), Ozaki et al.

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