Abstract: A magneto-inductive flow measuring device is disclosed that includes a measuring tube with a measuring tube axis and two measuring electrodes arranged diametrally opposite one another on the measuring tube and from which a signal is tapped for ascertaining a flow. The flow measuring device includes four other electrodes in pairs arranged diametrally opposite one another on the measuring tube, forming second and third electrode axes that intersect the measuring tube axis, where the two electrode axes are arranged offset from a parallel projection of the first electrode axis onto the second cross-sectional plane by a clockwise or counterclockwise angular measure. The flow measuring device further includes an evaluation unit for detecting a flow profile based on measurement signals tapped from the electrodes of the two electrode axes. A further aspect of the disclosure includes a method for compensating a flow profile related measurement error in a flow measurement.

Abstract: An apparatus for measuring volume flow of a fluid flowing through a measuring tube in the direction of its longitudinal axis, comprising a coil arrangement, at least two measuring electrodes coupling with the fluid and a control/evaluation unit, which in connection with the coil arrangement produces a magnetic field periodically changing its polarity and extending essentially transversely to the longitudinal axis of the measuring tube. The control/evaluation unit during a measuring phase at an essentially constant magnetic field determines the volume flow of the fluid in the measuring tube based on a voltage induced in the measuring electrodes. The control/evaluation unit supplies the coil arrangement with an overvoltage during a delay phase, and the delay phase begins at the point in time of the reversal of the polarity of the magnetic field and ends at the point in time of the beginning of the measuring phase.

Abstract: A magneto-inductive flow measuring device including a coil arrangement and a circuit for controlling a supply voltage of the coil arrangement. The circuit is designed to provide the supply voltage of the coil arrangement with a voltage curve sequenced as follows: A) the voltage rises from a starting voltage I up to an overvoltage II; B) in given cases, the voltage is held at the overvoltage II; C) the voltage falls from the overvoltage II down to a holding voltage V. The circuit controls the fall of the voltage from the overvoltage down to the holding voltage by tuning the voltage to at least two or more predetermined, intermediate, desired values III, IV.

Abstract: An apparatus for measuring volume flow of a fluid flowing through a measuring tube in the direction of its longitudinal axis, comprising a coil arrangement, at least two measuring electrodes coupling with the fluid and a control/evaluation unit, which in connection with the coil arrangement produces a magnetic field periodically changing its polarity and extending essentially transversely to the longitudinal axis of the measuring tube. The control/evaluation unit during a measuring phase at an essentially constant magnetic field determines the volume flow of the fluid in the measuring tube based on a voltage induced in the measuring electrodes. The control/evaluation unit supplies the coil arrangement with an overvoltage during a delay phase, and the delay phase begins at the point in time of the reversal of the polarity of the magnetic field and ends at the point in time of the beginning of the measuring phase.

Abstract: A method for operating a magneto-inductive measuring system, especially a magneto-inductive flow measuring device, in the case of which a magnetic field is produced by a field coil arrangement, through which electrical current flows, wherein the electrical current is a clocked direct current and the field coil arrangement is supplied during a clock interval with a time variable, direct voltage and wherein magnetic energy of the field coil arrangement is determined cyclically or sporadically.

Abstract: A magneto-inductive flow measuring device including a coil arrangement and a circuit for controlling a supply voltage of the coil arrangement. The circuit is designed to provide the supply voltage of the coil arrangement with a voltage curve sequenced as follows: A) the voltage rises from a starting voltage I up to an overvoltage II; B) in given cases, the voltage is held at the overvoltage II; C) the voltage falls from the overvoltage II down to a holding voltage V. The circuit controls the fall of the voltage from the overvoltage down to the holding voltage by tuning the voltage to at least two or more predetermined, intermediate, desired values III, IV.

Abstract: An installed hardware of a measuring field device includes at least one transducer reacting during operation to a chemical and/or physical, measured variable of a pourable and/or flowable medium, especially a pourable or flowable bulk good, liquid, gas or the like, as well as a microcomputer communicating during operation with the transducer. The field device is first installed by means of the transducer on, and/or in a process vessel serving for conveying and/or holding pourable and/or flowable media for forming a process measuring point. Thereafter, the microcomputer is booted and a basic software held in a memory provided within the field device for providing, at least in part, basic functionalities of the field device is activated in such a manner that the basic software is executable by means of the microcomputer so that, in the interaction of basic software and hardware installed in the field device, the basic functionalities of the field device are available.

Abstract: A set-up for operating a process installation. The set-up includes a control station and at least one field device, which determines or monitors at least one process variable. Each field device has a program memory, in which a boot-loader software is persistently implemented. The boot-loader software enables communication of the field device with the control station. A transmission link is provided, via which the control station and the field device, or field devices, communicate with one another during operation. Each field device transmits to the control station upon booting of the field device, via the transmission link, device-specific information. The control station transmits to the field device, after receipt of the device-specific information, application- and/or device-specific, measurement/control/evaluation software, which is matched to a particular application of the field device and which the field device stores in a data memory associated with it.

Abstract: A magneto-inductive flow measuring device, including: A measuring tube, through which a medium flows essentially directed along a measuring tube axis; a magnet arrangement, which produces an alternating magnetic field passing through the measuring tube essentially perpendicularly to the measuring tube axis; two measuring electrodes arranged essentially on a line directed essentially perpendicularly to the measuring tube axis and to the magnetic field; and a control/evaluation unit, which determines volume, or mass, flow of the medium through the measuring tube on the basis of a measurement voltage tapped on the measuring electrodes. In order to detect an error state at the flow measuring device early, the control/evaluation unit determines current, actual, settling time to reach a stable measurement state of the measuring device.

Abstract: An apparatus for measuring volume- or mass-flow of a medium flowing through a measuring tube in the direction of the measuring tube axis, and includes: a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to the measuring tube axis; at least one measuring electrode, which contacts the medium in a defined surface region; and a control/evaluation unit, which provides information concerning volume- or mass flow of the medium in the measuring tube on the basis of a measurement voltage induced in the at least one measuring electrode. At least the medium-contacting surface region of the at least one measuring electrode is manufactured of a chemically inert and electrochemically and mechanically resistant material.

Abstract: A magneto-inductive flow measuring device providing, in addition to flow information for a medium, also information concerning electrical conductivity of the medium. For a highly accurate determination of the electrical conductivity, the invention provides the following solution: a temperature measuring unit is provided, which makes available information concerning the temperature of the medium. On the basis of the measured temperature, a control/evaluation unit ascertains a correction value for electrical conductivity and makes available a correspondingly corrected value for the electrical conductivity.

Abstract: The invention relates to a magneto-inductive flow measuring device (1), including: A measuring tube (2), through which a medium (11) flows essentially in a direction of a measuring tube axis (16); a magnet arrangement (6, 7), which produces a magnetic field (H) passing through the measuring tube (2) and extending essentially perpendicularly to the measuring tube axis (16); a first measuring electrode (3) and a second measuring electrode (4); wherein the measuring electrodes (3, 4) are positioned in the measuring tube (2) on a connecting line, which is directed essentially perpendicularly to the measuring tube axis (16) and to the magnetic field (H); and an evaluation/control unit (12), which ascertains, on the basis of a measurement voltage tapped on the measuring electrodes (3, 4), the volume- and/or mass-flow of the medium (11) through the measuring tube (2).

Abstract: An apparatus for measuring volume- or mass-flow of a medium flowing through a measuring tube in the direction of a measuring tube axis, includes: a magnet system producing a magnetic field passing through the measuring tube essentially transversely to the measuring tube axis; at least one measuring electrode coupled with the medium; a reference component lying at a defined potential, wherein the reference component is connected with a resistance; and a control/evaluation unit, which, on the basis of measurement voltage induced in the at least one measuring electrode, delivers information concerning volume- or mass flow of the medium in the measuring tube. For the purpose of an early recognizing of a malfunction of the measuring apparatus device, or a component of the measuring apparatus device, a measuring device is provided, which makes available information concerning whether electrical current is flowing through the resistance.

Abstract: A magneto-inductive flow measuring device, including: A measuring tube, through which a medium flows essentially directed along a measuring tube axis; a magnet arrangement, which produces an alternating magnetic field passing through the measuring tube essentially perpendicularly to the measuring tube axis; two measuring electrodes arranged essentially on a line directed essentially perpendicularly to the measuring tube axis and to the magnetic field; and a control/evaluation unit, which determines volume, or mass, flow of the medium through the measuring tube on the basis of a measurement voltage tapped on the measuring electrodes. In order to detect an error state at the flow measuring device early, the control/evaluation unit determines current, actual, settling time to reach a stable measurement state of the measuring device.

Abstract: A method for supplying energy to a field device of process automation, which servers for registering a chemical and/or physical property of a process medium, energy required for operating the field device is obtained by means of the process medium.

Abstract: A method for determining the working point of a magneto-inductive flow measuring device for detecting volume- or mass-flow of a medium flowing through a pipeline or measuring tube, wherein an alternating magnetic field produced by a coil arrangement is caused to pass through the pipeline or measuring tube, wherein a sensor-specific rise time (tr) from reversal of the magnetic field up to reaching of an at least approximately constant magnetic field, as dependent on the particular magneto-inductive flow measuring device, is ascertained and stored, wherein a minimum measuring time (tM) for providing a measured value of flow at the at least approximately constant magnetic field is determined, and wherein an optimized measuring period (Topt) is determined as the sum of the sensor-specific rise time (tr) and the minimum measuring time (tM) and made available for operation of the flow measuring device.

Abstract: The invention relates to an apparatus for measuring volume- or mass-flow of a medium flowing through a measuring tube (2) in the direction of the measuring tube axis (3), and includes: A magnet system (6, 7) producing a magnetic field (B) passing through the measuring tube (2) essentially transversely to the measuring tube axis (3); at least one measuring electrode (5) coupled with the medium (11); a reference component (17) lying at a defined potential, wherein the reference component (17) is connected with a resistance (20); and a control/evaluation unit (8), which, on the basis of measurement voltage induced in the at least one measuring electrode (4, 5), delivers information concerning volume- or mass flow of the medium (11) in the measuring tube (2).

Abstract: The invention relates to an apparatus for measuring volume- or mass-flow of a medium (11) flowing through a measuring tube (2) in the direction of the measuring tube axis (3), and includes: A magnet system (6, 7; 17), which produces a magnetic field (B) passing through the measuring tube (2) essentially transversely to the measuring tube axis (3); at least one measuring electrode (4; 5), which contacts the medium (11) in a defined surface region; and a control/evaluation unit (8), which provides information concerning volume- or mass flow of the medium (11) in the measuring tube (2) on the basis of a measurement voltage induced in the at least one measuring electrode (4, 5); wherein at least the medium-contacting surface region of the at least one measuring electrode (4, 5) is manufactured of a chemically inert and electrochemically and mechanically resistant material.

Abstract: A set-up for operating a process installation. The set-up includes a control station and at least one field device which determines or monitors at least one process variable. Each field device has a program memory in which a boot-loader software is persistently implemented. The boot-loader software enables communication of the field device with the control station. A transmission link is provided, via which the control station and the field device, or field devices communicate with one another during operation. Each field device transmits to the control station upon booting of the field device via the transmission link device-specific information. The control station transmits to the field device after receipt of the device-specific information, application- and/or device-specific, measurement/control/evaluation software, which is matched to a particular application of the field device and which the field device stores in a data memory associated with it.

Abstract: The flowmeter comprises a flow sensor with a flow tube, two electrodes, and two field coils traversed by a first excitation current and a second excitation current, respectively, as well as control and evaluation electronics. The method serves to generate an error signal when the uniform turbulence in the liquid to be measured is disturbed. There are four quarter cycles. During each quarter cycle, a voltage is derived from the electrodes, and from these voltages, a first and a second voltage difference and a quotient using the first and the second voltage differences are formed. The latter is determined during calibration under uniformly turbulent flow conditions, and stored. In operation, values of the quotient are continuously formed and compared with the stored quotient; in case of deviations, an alarm is triggered and/or the volumetric flow rate signal represented by the first voltage difference is corrected.