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AssigneeKROHNE Messtechnik GmbH
InventorsJurgen Winfried Klein, Peter Dullenkopf, Arnd ten Have, Andreas Lenniger, Andreas Stratmann
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The invention concerns a magnetically inductive flow meter for flowing media with a tube consisting of ceramic material and used as a measurement line, a magnet to produce a magnetic field running at least essentially perpendicular to the tube axis, at least two measuring electrodes arranged preferably perpendicular to the tube axis and preferably perpendicular to the direction of the magnetic field and at least two screening or shielding electrodes shielding the measuring electrodes from outer electrical fields, wherein the measuring electrodes and the screening or shielding electrodes are placed outside the tube. The shielded magnetically inductive flow meter is characterized in that there is a layer consisting of a ceramic material surrounding the tube, that the measuring electrodes are arranged essentially inside the layer and especially on the border between the layer and the tube, and that the screening or shielding electrodes inside the layer, especially on the border between the layer and the tube and especially on the outer surface of the layer are arranged so that the screening or shielding electrodes shield the measuring electrodes from the outside.
A magnetically inductive flow meter for flowing media of the type including a tube (1) made of ceramic material used as a measuring line, a magnet to produce a magnetic field extending perpendicular to the axis of the tube, at least two measuring electrodes (2, 3) arranged perpendicular to the tube axis and perpendicular to the direction of the magnetic field and, at least one shielding electrode (4, 5) shielding the measuring electrodes (2, 3) from outside electrical fields and a layer (6) of ceramic material surrounding the tube (1), wherein the measuring electrodes (2, 3) and said at least one shielding electrode (4, 5) are placed outside the tube and the measuring electrodes (2, 3) are arranged inside the layer (6) or on the border between the layer (6) and the tube (1) and wherein at least one flexible LTCC ceramic film or foil (7, 8), each having a surface and sinterable at low temperature, forms the layer (6) and the measuring electrodes (2,) and said at least one shielding electrodes (4, 5) is arranged on the surface of, or within said at least one LTCC ceramic film or foil (7, 8).
Dependencies are inferred from the claim text.