Two disc encoder system for monitoring height of liquid in stora

Details Two disc encoder system for monitoring height of liquid in stora Two disc encoder system for monitoring height of liquid in stora

1980-10-29

1982-08-03

Swann, III, Glen R.

Communications: electrical

Continuously variable indicating

Condition responsive

250570, 34087011, G08C 1916, G08C 906

Patent

active

043429963

ABSTRACT:
An apparatus for determining the height of liquid in a storage tank comprising: an instrument shaft capable of being associated with the shaft of the tank level gage; a first disc rotatable in response to the rotation of the instrument shaft; a second disc rotatable in response to the rotation of the first disc; first and second signal emitters associated with the first and second discs, respectively; and first and second signal receivers associated with the first and second signal emitters, respectively. A different, distinct pattern of signals is received by each of the receivers for each radial increment of disc as each disc rotates. The patterns of signals received by the first and second receivers are translatable into the height of liquid in the tank.

REFERENCES:
patent: 3725904 (1973-04-01), Breslow et al.
patent: 3908129 (1975-09-01), Akers
patent: 3956681 (1976-05-01), Vail et al.
patent: 3975633 (1976-08-01), Larkin
patent: 4236144 (1980-11-01), Sunagana

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