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US 2007/0163360 A1Published application
Magnetic-inductive flow meter with a grounding disk
AssigneeABB Patent GmbH
InventorsRalf Baecker, Dieter Keese, Karl-Heinz Rackebrandt
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AssigneeABB Patent GmbH
InventorsRalf Baecker, Dieter Keese, Karl-Heinz Rackebrandt
Estimating the term…
A magnetic-inductive flow meter with a measuring tube (1) made of metal, which is flowed through by a medium (4) which has a minimum electrical conductivity and is permeated by a magnetic field generated by means of an arrangement of magnets (5), in the region of which field at least two measuring electrodes (6) arranged diametrically on the measuring tube (1) are provided for sensing the inductively generated measuring voltage, the metal measuring tube (1) being provided with an electrically insulating inner layer (7) and an electrically conductive grounding disk (8) being arranged at the end face for grounding the medium flowing through the measuring tube (1), which disk is connected to ground via the measuring tube, the grounding disk (8′) consisting of an electrically conductive plastic which comes to lie in sealing contact directly against the end face (2) of the measuring tube (1) in order to be connected to ground by the direct contact.
A magnetic-inductive flow meter with a measuring tube (1) made of metal, which is flowed through by a medium (4) which has a minimum electrical conductivity and is permeated by a magnetic field generated by means of an arrangement of magnets (5), in the region of which field at least two measuring electrodes (6) arranged diametrically on the measuring tube (1) are provided for sensing the inductively generated measuring voltage, the metal measuring tube (1) being provided with an electrically insulating inner layer (7) and an electrically conductive grounding disk (8) being arranged at the end face for grounding the medium flowing through the measuring tube (1), which disk is connected to ground via the measuring tube, wherein the grounding disk (8′) consists of an electrically conductive plastic which comes to lie in sealing contact directly against the end face (2) of the measuring tube (1) in order to be connected to ground by the direct contact.
The magnetic-inductive flow meter as claimed in one of the preceding claims, wherein the plastic of the grounding disk (8′) has a hardness in the range of that of rubber in order to ensure optimal elastic sealing properties.
Dependencies are inferred from the claim text.