Patent ID: 7448281

Claim:
A magnetic induction flowmeter having a metal measuring tube ( 1 ), which can be inserted into a pipeline system via flanged sections ( 2 a , 2 b ) at the ends, having at least two mutually opposite measuring electrodes ( 5 a , 5 b ) introduced into the wall of the measuring tube ( 1 ) in an electrically insulated manner in order to register a measuring voltage, a magnetic unit ( 4 ), likewise arranged on the outside of the measuring tube ( 1 ), generating a magnetic field aligned substantially at right angles to the flow direction of the conductive flow medium to be measured, and the measuring tube ( 1 ) being provided with an electrically insulating layer ( 6 ) on the inside, wherein, in the region of the flanged sections ( 2 a , 2 b ) at the end of the measuring tube ( 1 ), an expanded lattice ( 7 ) is fixed to the measuring tube ( 1 ), to which lattice the insulating layer ( 6 ) is applied in such a way that the expanded lattice ( 7 ) located within the insulating layer ( 6 ) ensures a firm connection between insulating layer ( 6 ) and measuring tube ( 1 ).