Magnetic-inductive flowmeter and measuring point having a magnetic-inductive flowmeter of this type

A measuring point for determining a flow-profile independent flow velocity or volume flow of a medium, the measuring point comprising:

• a magnetic-inductive flowmeter configured to measure the flow velocity or volume flow of the medium, comprising:
• a measuring tube adapted to convey the medium in a longitudinal direction defined by a measuring tube axis, wherein the measuring tube includes an inlet end area and an outlet end area, which delimit the measuring tube in the longitudinal direction;
• a magnetic field producing apparatus disposed about a cross-section of the measuring tube and configured to generate a magnetic field in the medium extending essentially perpendicular to the longitudinal direction, wherein the magnetic field producing apparatus includes a segment configured to couple the magnetic field into the medium and applied on, or at a predetermined minimum distance from, the measuring tube, wherein the segment surrounds the measuring tube over a first angle, which defines a maximum angle of arc in the cross-section of the measuring tube;
• an electrode system including at least two electrode pairs, which are adapted to detect a voltage in the medium induced perpendicular to the magnetic field and to the longitudinal direction, wherein a vertical measuring tube longitudinal plane defines a first side and a second side of the measuring tube, wherein a first electrode of an electrode pair of the at least two electrode pairs is disposed on the first side of the measuring tube, wherein a second electrode of the corresponding electrode pair is disposed on the second side, wherein a second angle in the cross-section of the measuring tube defines a minimum circular sector in which the respective first electrodes of the at least two electrode pairs disposed on the first side of the measuring tube are distributed,
• wherein the first angle and second angle are so matched to each other that the flowmeter is substantially insensitive to departures from a rotationally symmetric flow, and
• wherein, in a test measurement, the flowmeter provides a measurement error of flow velocity and/or a measurement error of volume flow of less than 1.0%, wherein the flow velocity and/or the volume flow are/is determined given a flow with fully developed flow profile of the medium, and wherein the flow velocity and/or the volume flow are/is determined given a rotationally asymmetric flow of the medium;
• and
• a 90° elbow arranged at a distance of 0-DN at the inlet end area.