Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent
1980-05-14
1982-12-14
Kreitman, Stephen A.
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
G01F 2326
Patent
active
043632394
ABSTRACT:
The present invention is part of a liquid gaging system and comprises an apparatus for monitoring a quadrature signal from a capacitor sensor. Included is a capacitive sensor for providing a liquid measurement signal related to a liquid in a tank, the liquid measurement signal comprising a capacitive signal and a quadrature signal. The invention also includes apparatus for monitoring the quadrature signal through null detection of the capacitive signal, the null detection being implemented through a rebalance approximation sequence. The apparatus for monitoring is connected to the sensor.
REFERENCES:
patent: 2460773 (1949-02-01), Stimson
patent: 2519668 (1950-08-01), Konigsberg
patent: 2601176 (1952-02-01), Smith
patent: 2968181 (1961-01-01), Mittelman
patent: 3361897 (1968-01-01), Rush
patent: 3463980 (1969-08-01), Cohn et al.
patent: 3523186 (1970-08-01), Cohn et al.
patent: 3797311 (1974-03-01), Blanchard et al.
patent: 3830090 (1974-08-01), Hersch et al.
patent: 3935741 (1976-02-01), Zinsmeyer et al.
patent: 4055995 (1977-11-01), Armstrong et al.
patent: 4079627 (1978-03-01), Gundlach
patent: 4083248 (1978-04-01), Maier
patent: 4090408 (1978-05-01), Hedrick
patent: 4114442 (1978-09-01), Pratt
patent: 4118772 (1978-10-01), Takada
patent: 4164146 (1979-08-01), DuVall et al.
patent: 4173893 (1979-11-01), Hedrick
patent: 4181958 (1980-01-01), Juengel et al.
patent: 4212064 (1980-07-01), Forsythe et al.
patent: 4215404 (1980-07-01), Bukhiyarov et al.
patent: 4229798 (1980-10-01), Rosie et al.
patent: 4258422 (1981-03-01), Dougherty et al.
patent: 4263652 (1981-04-01), Henrich
patent: 4266144 (1981-05-01), Bristol
patent: 4275382 (1981-06-01), Jannotta
Honeywell Inc.
Kreitman Stephen A.
Sumner John P.
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