The invention relates to 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 (5) in a pipeline (11), with a measuring tube, which flows through the medium (5) in the direction of the measuring tube axis (3), wherein the measuring tube (4) in Direction of flow (S) of the medium (5) has a first end region (7) and a second end region (8), with a magnet system (9) which passes through the measuring tube (4), extending substantially transversely to the measuring tube axis magnetic field (B) generated, with at least one with the medium (5) coupled to the measuring electrode (10), which is arranged in a substantially perpendicular to the magnetic field of the measuring tube (4), and with a control / evaluation unit (11), based on the in the at least one measuring electrode (10) induced measuring voltage (U SUB i / SUB) provides information about the volume or mass flow of the medium (5) in the measuring tube (4). In order to keep the costs for the magnetic-inductive flowmeter low, the measuring tube (4) is designed in one piece and the first end region (7) and the second end region (8) of the measuring tube (4) are crimped.