Abb Patent Gmbh

Ralf Baecker

Dieter Keese

Karl-Heinz Rackebrandt

A magnetic-inductive flow meter with a measuring tube () made of metal, which is flowed through by a medium () which has a minimum electrical conductivity and is permeated by a magnetic field generated by means of an arrangement of magnets (), in the region of which field at least two measuring electrodes () arranged diametrically on the measuring tube () are provided for sensing the inductively generated measuring voltage, the metal measuring tube () being provided with an electrically insulating inner layer () and an electrically conductive grounding disk () being arranged at the end face for grounding the medium flowing through the measuring tube (), which disk is connected to ground via the measuring tube, the grounding disk (') consisting of an electrically conductive plastic which comes to lie in sealing contact directly against the end face () of the measuring tube () in order to be connected to ground by the direct contact.

Magnetic-inductive flow meter with a grounding disk

A magnetoinductive flowmeter for a medium (), which is flowing through a measuring tube () and has a minimum electrical conductivity, having at least two electric coils (), which are arranged opposite one another on the measuring tube (), for the purpose of inducing a magnetic field running essentially perpendicularly with respect to the longitudinal axis of the measuring tube (), and having an electrode arrangement (), which is likewise aligned essentially perpendicularly with respect to the longitudinal axis of the measuring tube () and essentially perpendicularly with respect to the magnetic-field axis, for the purpose of measuring a measurement voltage induced as a result of the flow of medium (), the electric coils () being accommodated such that they are sealed on the outside in each case one associated housing part (and, respectively), which housing parts are in the form of hollow-cylinder segments and are mounted detachably on the measuring tube () by being joined together so as to at least partially surround the measuring tube ().

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Bovenden, Germany

Ralf Baecker