Goodrich Corporation

John A Harr

Jon Shearer

Martin I Lei

Sabeshan Sean Periyathamby

Bryan J Mackulin

Carl R Aeshliman

A liquid level sensing system includes a vessel and an electrode. The vessel includes a vessel wall separating a vessel interior from a vessel exterior. The electrode is mounted to an exterior side of the vessel wall spanning a distance corresponding to a desired-level-determining range. The vessel wall is a dielectric gap between the electrode and the vessel interior. The electrode is configured to collect a charge corresponding to a liquid level. A method for determining a liquid level in a vessel includes collecting a charge on an electrode, sensing the collected charge on the electrode with a capacitance sensor through an electrical line, and determining a liquid level in a vessel based on the collected charge sensed by the capacitance sensor.

Liquid level sensing systems

A sensing device () is provided for sensing whether an electrically-conductive fluid () has reached a predetermined level within a container (). In this device (), a first electrode () is electrically connected to a source () and a second electrode () is electrically connected to ground. When the electrode gap () is filled with the fluid (), the sensing circuitry causes the electrodes () to switch roles as the anode depending upon whether a positive voltage pulse or negative voltage pulse is being received from the source ().

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Minerva, OH, United States of America

John A Harr