MAGNETIC-INDUCTIVE FLOW MEASUREMENT DEVICE

• Main Authors: PAIVA GALVAO, Tulio, BAYSANG, Jean-Marc, TSCHAMBSER, Florent, GRÜTER, Beat
• Format: Patent
• Language: English; French; German
• Published: 09.10.2024
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention relates to a magnetic-inductive flow measurement device for determining a flow-velocity-dependent measurement variable of a flowable medium, said flow measurement device comprising: - a device (5) for generating a magnetic field and a device (8) for tapping a measurement voltage induced in the flowable medium; - an operating circuit (7, 107) which is designed to apply a first operating signal (11.1) to the first coil (6.1) and separately a second operating signal (11.2) to the second coil (6.2), the first operating signal (11.1) and the second operating signal (11.2) each having a time-varying (coil) voltage curve (12) which is divided into time intervals (t), the time intervals (t) each having a first time sub-interval (t hold ) in which a first (coil) voltage (U hold ) over the first time sub-interval (t hold ) is applied to the coils (6. 1, 6.2), and coil currents of different measurement intervals of the first operating signal (11.1) being changeable variables; and - a control circuit (10, 120), the control circuit (10, 120) being designed to control at least the first (coil) voltage (U hold ) of the first operating signal (11.1) in such a way that a deviation of a control function from a predefined control target value, in particular a control target value comprising a variable that is proportional to a magnetic flux, is minimal.