Fluid detection system

Details Fluid detection system Fluid detection system

1985-11-26

1988-03-01

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340624, 340603, 73 40, 73 492, G08B 2100

Patent

active

047289414

ABSTRACT:
An apparatus for sensing the difference between a polar fluid and a non-polar fluid includes a control assembly, a probe assembly and a conduit electrically coupling the probe assembly to the control assembly at a remote location thereto. The probe assembly includes a float, at least one fluid sensor mounted beneath the float, a fluid sensor circuit for providing a signal indicative of the polar characteristics of the fluid, and a logic circuit having a first state when the signal indicates a polar fluid and a second state when the signal indicates a non-polar fluid. The control assembly includes cicuitry responsive to the state of the logic circuit for controlling alarms, visual indicators, and machine operations. The probe assembly may also include a detector for detecting the state of the fluid. If the fluid has a non-liquid state then the logic circuit has a third state which indicates the non-liquid state of the fluid. The probe assembly may also include a second fluid sensor mounted beneath the float in vertical spaced relationship to the one sensor.

REFERENCES:
patent: 3242473 (1966-03-01), Shivers, Jr. et al.
patent: 3603952 (1971-09-01), Smith
patent: 3651330 (1972-03-01), Hayes
patent: 3873927 (1975-03-01), Overall
patent: 4126857 (1978-11-01), Lancia et al.
patent: 4131773 (1978-12-01), Maham et al.
patent: 4165509 (1979-08-01), Betts et al.
patent: 4644354 (1987-02-01), Kidd
patent: 4646069 (1987-02-01), Andrejasich et al.

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