公开(公告)号：US20210403201A1

公开(公告)日：2021-12-30

申请号：US17357218

申请日：2021-06-24

Applicant: GRUNDFOS HOLDING A/S

Inventor： Rainer SCHMITZ ,  Valeri KECHLER ,  Klaus MÜLLER

IPC: B65D25/48 ,  G01F23/00

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.