Submersible pump controller
AssigneeRichal Corporation
InventorRichard Gurega
Life of this patent
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Abstract
An apparatus for improving the service life of a submersible probe residing in a tank includes a liquid level detector adapted to detect when a liquid in the tank rises to a first level. The first level is above the probe. A controller is coupled to the liquid level detector. The controller is configured to increase at least one of a voltage and a current applied to the probe responsive to the liquid being detected at the first level. The controller is configured to reduce an electrical potential field produced by the probe responsive to the liquid falling below a second level, thereby extending the service life of the probe by reducing the accumulation of foreign matter on the probe when the pump is not activated.
Claims22
An apparatus for improving the service life of a submersible probe residing in a tank, comprising:
- a liquid level detector adapted to detect when a liquid in the tank rises to a first level, said first level being above the probe;
- and
- a controller coupled to said liquid level detector, said controller configured to increase at least one of a voltage and a current applied to the probe responsive to said liquid being detected at said first level, said controller configured to reduce an electrical potential field produced by the probe responsive to said liquid being below said second level.
A method for improving the service life of a submersible probe residing in a tank, comprising:
- detecting a liquid in the tank rising to a first level, said first level being above the probe;
- increasing at least one of a voltage and a current applied to the probe responsive to said liquid being detected at said first level;
- and
- reducing an electrical potential field produced by the probe responsive to said liquid dropping below a second level.
Dependencies are inferred from the claim text.