Liquid supply system
AssigneeGrundfos Holding A/S
InventorsRainer Schmitz, Valeri Kechler, Klaus Müller
Life of this patent
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Abstract
A liquid supply system includes a suction lance (6) configured to be inserted into a liquid container (14) and at least one level sensor (10, 12) fixed on the lance (6) and configured to detect a liquid level (22) inside a liquid container (14). A control device (4) is connected to the level sensor (10, 12) and configured to determine a rate of change of the liquid level (22) detected by the at least one level sensor (10, 12) and to detect a lance removal if the rate of change reaches or exceeds a predefined threshold. A method for detecting the removal of a suction lance (6) from a liquid container (14) is provided.
Claims20
A liquid supply system comprising:
- a suction lance configured to be inserted into a liquid container;
- at least one level sensor fixed on said suction lance and configured to detect a liquid level inside a liquid container;
- a control device connected to said level sensor and configured to determine a rate of change of the liquid level detected by said at least one level sensor and to detect a removal of the suction lance if a rate of change of the liquid level detected by said at least one level sensor reaches or exceeds a predefined threshold.
A method for detecting the removal of a suction lance from a liquid container, wherein the suction lance comprises at least one level sensor fixed on said suction lance, the method comprising the steps of:
- determining a rate of change of the liquid level detected by said at least one level sensor;
- and
- detecting a removal of the suction lance if the rate of change of the liquid level detected reaches or exceeds a predefined threshold.
A liquid supply system comprising:
- a suction lance configured to be inserted into a liquid container;
- a level sensor device fixed on said suction lance and configured to detect a liquid level inside a liquid container;
- a control device connected to said level sensor device and configured to determine a rate of change of the liquid level detected by said level sensor device and to detect a removal of the suction lance if a rate of change of the liquid level detected by said level sensor device reaches or exceeds a predefined threshold.
Dependencies are inferred from the claim text.