Fluid detection system

Details Fluid detection system Fluid detection system

1984-02-13

1986-04-29

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

73 40, 73 492, 340521, 340605, 340620, 340624, 417 36, 417 63, G08B 2100

Patent

active

045860335

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 circuitry 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: 2456233 (1948-12-01), Wolf
patent: 3261201 (1966-07-01), Pottash
patent: 3350704 (1967-10-01), Kessler
patent: 3995472 (1976-12-01), Murray
patent: 4186419 (1980-01-01), Sims
patent: 4213340 (1980-07-01), Cheng
patent: 4305068 (1981-12-01), Klein
patent: 4357113 (1982-11-01), Brooks
patent: 4425795 (1984-01-01), Allbrecht et al.
patent: 4453400 (1984-06-01), Senese et al.
patent: 4505148 (1985-03-01), Zajac

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