Abstract: A method for operating a magnetically-inductive flowmeter, wherein the magnetically-inductive flowmeter includes: a measuring tube for guiding a flowable medium; at least two measuring electrodes for detecting a flow velocity-dependent measuring voltage induced in the medium; and a magnetic field-generating device for generating a magnetic field passing through the measuring tube, wherein the magnetic field-generating device includes a coil system with at least one coil, includes determining a deviation ? of a reactance of the coil system or of a variable dependent upon the reactance of the coil system from a desired value. A magnetically inductive flowmeter is also disclosed.

Abstract: The present disclosure relates to a method for operating a magnetoinductive flowmeter as well as to such a flowmeter, wherein a disturbance superimposed on a measurement signal is at least partially compensated for by negative feedback of the disturbance to the measurement signal.

Abstract: The present disclosure relates to a method for operating a magnetoinductive flowmeter as well as to such a flowmeter, wherein a disturbance superimposed on a measurement signal is at least partially compensated for by negative feedback of the disturbance to the measurement signal.

Abstract: The invention relates to a magneto-inductive flow measuring device for measuring flow velocity or volume flow of a medium in a pipeline as well as to a method for implementing the magneto-inductive flow measuring device. In such case, the remanent magnetic field of at least one permanent magnet is applied for flow monitoring and flow measurement, wherein the flow measurement is performed upon achievement of criteria.

Abstract: A magneto-inductive flow measuring device for measuring the flow of a flowable medium is described. The flow measuring device includes a measuring tube, a pair of coils, which are arranged opposite one another on the measuring tube and which are designed to produce an alternating magnetic field, which can be turned on and off, and which extends essentially transversely to the longitudinal axis of the measuring tube, as well as a pair of permanent magnets, which are arranged opposite one another on the measuring tube and which are designed to produce a permanent magnetic field, which extends essentially transversely to the longitudinal axis of the measuring tube.

Abstract: A method and flow measuring device for ascertaining flow of a medium through a measuring tube based on at least a first measurement signal, which depends at least on the flow velocity of the medium in the measuring tube, wherein the first measurement signal is registered, wherein an additional, second measurement signal is registered, which depends on the flow cross sectional area of the medium in the measuring tube and is independent of the flow velocity of the medium in the measuring tube, and wherein flow is ascertained as a function of the first and second measurement signals.

Abstract: A method and flow measuring device for ascertaining flow of a medium through a measuring tube based on at least a first measurement signal, which depends at least on the flow velocity of the medium in the measuring tube, wherein the first measurement signal is registered, wherein an additional, second measurement signal is registered, which depends on the flow cross sectional area of the medium in the measuring tube and is independent of the flow velocity of the medium in the measuring tube, and wherein flow is ascertained as a function of the first and second measurement signals.

Abstract: A method for operating a magneto-inductive flow measuring system, wherein the magneto-inductive flow measuring system has a measuring tube, wherein measuring tube has a lumen for the conveying an at least slightly electrically conductive, measured substance, and wherein the magneto-inductive flow measuring system has a first and a second electrode electrically interacting with the measured substance.

Abstract: A method for operating a magneto-inductive flow measuring system, wherein the magneto-inductive flow measuring system has a measuring tube, wherein measuring tube has a lumen for the conveying an at least slightly electrically conductive, measured substance, and wherein the magneto-inductive flow measuring system has a first and a second electrode electrically interacting with the measured substance.

Abstract: A method for predictive maintenance for a magneto-inductive flow-measuring device and/or to a method for determining electrical conductivity of a medium flowing through a magneto-inductive flow-measuring device, wherein the magneto-inductive flow-measuring device includes a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to a measuring tube axis; at least two measuring electrodes coupled with the medium, having a defined rest potential and being arranged in a region of the measuring tube lying essentially perpendicularly to the magnetic field; and a control/evaluation unit, which delivers information concerning volume- or mass-flow of the medium on the basis of measurement voltage induced in the measuring electrodes.

Abstract: A medium to be measured is allowed to flow through a measuring tube of a flow meter and a magnetic field passing at least sectionally with a time-varying intensity through the medium in the measuring tube is produced in such a manner that a measurement voltage is induced at least at times, especially in a clocked manner, in the medium. The measurement voltage induced in the medium is tapped, at least at times, by means of an electrode pair formed by first and second measuring electrodes for producing an analog measurement signal corresponding with the measurement voltage, and a flow-type of the medium located in the measuring tube, as determined by an instantaneous flow profile and/or an instantaneous composition of the flowing medium, is ascertained with application of a digital signal representing the at least one measurement signal.

Abstract: A method for predictive maintenance for a magneto-inductive flow-measuring device and/or to a method for determining electrical conductivity of a medium flowing through a magneto-inductive flow-measuring device, wherein the magneto-inductive flow-measuring device includes a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to a measuring tube axis; at least two measuring electrodes coupled with the medium, having a defined rest potential and being arranged in a region of the measuring tube lying essentially perpendicularly to the magnetic field; and a control/evaluation unit, which delivers information concerning volume- or mass-flow of the medium on the basis of measurement voltage induced in the measuring electrodes.

Abstract: A medium to be measured is allowed to flow through a measuring tube of a flow meter and a magnetic field passing at least sectionally with a time-varying intensity through the medium in the measuring tube is produced in such a manner that a measurement voltage is induced at least at times, especially in a clocked manner, in the medium. The measurement voltage induced in the medium is tapped, at least at times, by means of an electrode pair formed by first and second measuring electrodes for producing an analog measurement signal corresponding with the measurement voltage, and a flow-type of the medium located in the measuring tube, as determined by an instantaneous flow profile and/or an instantaneous composition of the flowing medium, is ascertained with application of a digital signal representing the at least one measurement signal.