Krohne Ag

Christian Paul

Joseph Neven

Josef Neven

Christoph Spiegel

Juan Carlos Gonzalez-Pelayo

Martijn Hunter

Arnoud Van Willigen

JC González Pelayo

A magnetic circuit device () for a magnetic-inductive flowmeter, having a coil () that has a coil core (). The magnetic circuit device () enables an increased range of application, in that it can be flexibly adapted to the geometries of the respective magnetic flow meter due to the fact that the coil core () is designed to be flexible in such a way that the coil () can be bent from a first shape into a second shape. In addition, a method () for manufacturing such a magnetic circuit device () involves the steps of provisioning, winding, heating, connecting, bending and fixing of the coil.

Magnetic circuit device for a magnetic-inductive flowmeter and method for manufacturing a magnetic circuit device

A magnetic-inductive flowmeter with a measuring tube for guiding an electrically conductive medium, a magnetic circuit device running outside the measuring tube for generating and guiding a magnetic field through the measuring tube, and two electrodes for tapping a measuring voltage induced in the medium. The magnetic circuit device has at least a first coil for generating the magnetic field and first and second pole piece plates, the magnetic field being formed between the pole piece plates, wherein the measuring tube is arranged between the two pole piece plates and wherein the electrodes are arranged on opposite sides of the measuring tube, an imaginary connecting line between the two electrodes running perpendicular to the direction of flow and perpendicular to the direction of the magnetic field. The magnetic field is fed into the pole piece plates by at least two feed-in regions per pole piece plate.

Magnetic-inductive flowmeter and magnetic circuit device

A method for flow measurement using a magnetic-inductive flowmeter with a measuring tube and magnetic field generator that allows for detection of a zero flow error is achieved in that the measuring tube is filled with a first medium, the strength of the magnetic field is measured over a first measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the first measuring interval, that a second medium is made to flow through the measuring tube, the strength of the magnetic field is measured over a second measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the second measuring interval, that a deviation of the derivative for the second measuring interval from the derivative for the first measuring interval is determined, and assigned to a zero flow error.

Method for flow measurement using a magnetic-inductive flowmeter

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Rotterdam, Netherlands

Christian Paul