A device for measuring the volume - or mass flow of a medium in a pipeline.

摘要

The invention relates to a device for measuring the volume - or mass flow of a medium (11) in a pipeline, with a measuring tube (2), the of the medium (11) in the direction of the longitudinal axis (3) of the measuring tube (2) to flow through it, with a magnetic system (6, 7), which is designed in such a way that it is an the measuring tube (2) extending substantially perpendicularly to the longitudinal axis (3) of the measuring tube (2) magnetic field (b) is generated, with at least one with the medium (11) coupling measuring electrode (4, 5), which in a substantially perpendicular to the magnetic field (b) a region lying in a bore (27) in the wall of the measuring tube (2) is arranged, wherein the measuring electrode (4; 5) an elongated electrode shaft (18) with a first with the medium, which is widened in the coupling end region (19), which is dimensioned such that its diameter (d) is greater than the diameter (d) of the bore (27) in the wall of the measuring tube (2), in which the measuring electrode (4; 5) is placed and with a rule - / evaluation unit (8), which on the basis of the in the at least one measuring electrode (4; 5) induced voltage (u) information about the volume - or mass flow of the medium (11) in the measuring pipe (2) supplies. In the opposite second end region of the electrode shaft (18) of the measuring electrode (4; 5), at least one radial recess (21) or a radial projection. Furthermore, a clamping - or latching element (22) is provided, which is configured in such a way that it is in engagement ..