A magnetoinductive flowmeter for a medium (2), which is flowing through a measuring tube (1) and has a minimum electrical conductivity, having at least two electric coils (3a, 3b), which are arranged opposite one another on the measuring tube (1), for the purpose of inducing a magnetic field running
A magnetoinductive flowmeter for a medium (2), which is flowing through a measuring tube (1) and has a minimum electrical conductivity, having at least two electric coils (3a, 3b), which are arranged opposite one another on the measuring tube (1), for the purpose of inducing a magnetic field running essentially perpendicularly with respect to the longitudinal axis of the measuring tube (1), and having an electrode arrangement (4), which is likewise aligned essentially perpendicularly with respect to the longitudinal axis of the measuring tube (1) 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 (2), the electric coils (3a, 3b) being accommodated such that they are sealed on the outside in each case one associated housing part (4a and 4b, respectively), which housing parts are in the form of hollow-cylinder segments and are mounted detachably on the measuring tube (1) by being joined together so as to at least partially surround the measuring tube (1).
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What is claimed is: 1. A magnetoinductive flowmeter for a medium having at least a minimum electrical conductivity, said magnetoinductive flowmeter comprising: a measuring tube through which the medium may flow; at least two electric coils, which are arranged opposite one another on the measuring t
What is claimed is: 1. A magnetoinductive flowmeter for a medium having at least a minimum electrical conductivity, said magnetoinductive flowmeter comprising: a measuring tube through which the medium may flow; 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 an electrode arrangement, which is 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; and wherein the electric coils are each undetachably connected to and sealed at least partially within an associated housing part, which housing parts are in the form of hollow-cylinder segments defining cavities adapted to receive casting material, wherein the casting material undetachably secures the electric coils to the respective housing part, the hollow-cylinder segments being detachably mounted on the measuring tube so as to at least partially surround the measuring tube. 2. The magnetoinductive flowmeter according to claim 1, wherein a synthetic resin material is used as the casting material, said housing part forming the casting mold wherein the synthetic resin material cures. 3. The magnetoinductive flowmeter according to claim 1, wherein the housing parts in the form of hollow-cylinder segments each have an identical shape. 4. The magnetoinductive flowmeter according to claim 3, wherein the housing parts in the form of hollow-cylinder segments are produced from plastic by injection molding. 5. The magnetoinductive flowmeter according to claim 4, wherein each housing part, which has been injection-moulded from plastic, comprises at least two pieces, it being possible for the pieces to be mounted, once the associated electric coil has been inserted, by means of a clip connection to the housing part. 6. The magnetoinductive flowmeter according to claim 1, wherein the magnetic return-path arrangement of each electric coil comprises an iron metallic yoke for the purpose of guiding the magnetic field, which is arranged in or at a corresponding cutout in the housing part. 7. The magnetoinductive flowmeter according to claim 1, wherein the housing parts are joined together detachably on the measuring tube by means of clamps or in the manner of a clip connection. 8. The magnetoinductive flowmeter according to claim 1, wherein only two electric coils are provided, each of which are accommodated in an associated housing part, respectively, which housing parts are in the form of hollow-cylinder segments and surround the measuring tube at an angle of in each case approximately 180째. 9. The magnetoinductive flowmeter according to claim 8, wherein the two end faces, which abut one another in the mounted state, of the housing parts in the form of hollow-cylinder segments leave an aperture free for the purpose of mounting the electrodes, with the result that said electrodes can be fixed to the measuring tube by the housing parts being mounted on said measuring tube.
Neven Jozef H. M. (Meerssen NLX) Poortman Boodewijn J. (Dortrecht NLX) Tromp Wouter T. (Sliedrecht NLX) Stevens Udo (Moers DEX), Sensor for magnetic-inductive flowmeters.
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