主权项 |
1. A method for producing a magnetic-inductive flow meter having at least one measurement tube for through-flow of an electrically conductive medium having a metallic base body having a thermoplastic cover layer at least on an inside of the measurement tube, at least one magnetic field generating apparatus for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measurement tube and which permeates the measurement tube perpendicular to a longitudinal axis of the measurement tube, and with at least two measurement electrodes, a virtual connecting line of the at least two measurement electrodes running at least essentially perpendicular to the direction of the magnetic field,
comprising the steps of: first, forming the penetration sites for penetration of the measurement electrodes through the measurement tube in the base body (7) of the measurement tube, then, providing the base body with a thermoplastic cover layer at least in a region of the penetration sites, and then, connecting the measurement electrodes to the measurement tube in a fluid-tight manner by heating the thermoplastic cover layer in the region of the penetration sites so as to by a heat seal the thermoplastic cover layer of the measurement tube to the measurement electrodes. |