Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Patent
1981-07-17
1983-05-10
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
73291, 340620, 364509, G01F 2300
Patent
active
043823823
ABSTRACT:
A conductive multilevel liquid sensor uses conventional integrated circuits such as inverters and voltage comparators as signal detectors, and a flat cable having corrosion-resistant probe conductors of different lengths as the sensing probe assembly. The binary encoded outputs of the signal detectors identify the sensed liquid level. A continuous level control is realized by the addition of timing logic, and sensor operation range is improved by having the voltage at one comparator input be adaptive to the change in liquid conductivity.
REFERENCES:
patent: 824098 (1906-06-01), Dawes
patent: 3082292 (1963-03-01), Gore
patent: 3227922 (1966-01-01), Glaser et al.
patent: 3238386 (1966-03-01), Schaffner
patent: 3261005 (1966-07-01), Shade
patent: 3335334 (1967-08-01), Albisser
patent: 3370466 (1968-02-01), Chang
patent: 3498131 (1968-03-01), Rickey
patent: 3591854 (1968-12-01), Cole
patent: 3781840 (1973-12-01), Roberts et al.
patent: 3885167 (1975-05-01), Berglund
patent: 3947692 (1976-03-01), Payne
patent: 3967238 (1976-06-01), Redpath et al.
patent: 4027172 (1977-05-01), Hamelink
patent: 4036053 (1977-07-01), Jenkins
patent: 4068211 (1978-01-01), Van Tol
patent: 4203325 (1980-05-01), Cowles et al.
patent: 4244385 (1981-01-01), Hotine
patent: 4254470 (1981-03-01), Jordan
patent: 4265262 (1981-05-01), Hotine
Campbell Donald R.
Davis Jr. James C.
General Electric Company
Snyder Marvin
Yasich Daniel M.
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