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US 4,586,033 AGranted
Fluid detection system
AssigneeEmhart Industries, Inc.
InventorRaymond J. Andrejasich
Life of this patent
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AssigneeEmhart Industries, Inc.
InventorRaymond J. Andrejasich
Estimating the term…
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.
An apparatus for sensing the presence of polar and non-polar fluids comprising sensing means for sensing the difference between a polar fluid and a non-polar fluid, signal means providing a fluid polar characteristic related signal, detecting means for detecting a state of the fluid, signal means providing a fluid state related signal, logic means responsive to the fluid polar characteristic related signal and the fluid state related signal for determining if the state of the fluid is a liquid and for determining the polar characteristic of the liquid.
An apparatus for detecting the presence of polar and non-polar fluids comprising a control unit, a probe unit, and means for coupling the probe unit to the control unit at a remote location from the control unit, the probe unit including means for sensing the polar characteristics of the fluids, means for detecting a state of the fluids, signal means coupled to the detecting means and sensing means for providing status signals indicative of a non-liquid state of the fluid and the polar characteristics of the liquid and probe indicating means for indicating the presence of a polar liquid, a non-polar liquid, and the absence of a liquid, the control unit including control indicating means responsive to the status signals from the probe unit for indicating a non-liquid state of the fluid, the presence of a polar liquid, and the presence of a non-polar liquid, and means providing an alarm in response to the detection of a non-polar liquid.
Dependencies are inferred from the claim text.