An ultrasonic flowmeter for insertion into a pipe of a pipe system at the location of a flange connection of the pipe system, with a measuring tube having a longitudinal axis for guiding a flowable medium and with a flange for fastening the measuring tube in the pipe system. The measuring tube has at least one first transducer pocket for receiving a first ultrasonic transducer and at least one second transducer pocket for receiving a second ultrasonic transducer. A first ultrasonic transducer is arranged in the first transducer pocket and a second ultrasonic transducer is arranged in the second transducer pocket. The measuring tube is designed as a thin-walled tube such that the wall thickness of the measuring tube is less than the extension of the transducer pockets perpendicular to the longitudinal axis of the measuring tube, and the transducer pockets extend into the outer space of the measuring tube.
A method for the surface treatment of measuring electrodes inserted into a measuring tube for magnetic-inductive flowmeters is disclosed. The measuring electrodes have at least a carrier material of poor electrical conductivity and a conductive material of good electrical conductivity embedded in the carrier material, so that the measuring electrodes as a whole have an overall electrical conductivity suitable for the measuring task of the magnetic-inductive flowmeter. The method includes irradiating surface regions of the measuring electrodes terminating with an inner wall of the measuring tube with at least one laser beam. The irradiating step involves at least partially removing a carrier material in the surface regions of the measuring electrodes. The irradiating step also involves at least partially exposing an embedded electrically highly conductive material in the surface regions of the measuring electrodes and increasing the electrical surface conductivity of the measuring electrodes.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
3.
Device for an Ultrasonic Flowmeter and Ultrasonic Flowmeter
A device includes a flow straightener insertable into a measuring tube of an ultrasonic flowmeter, a reflector device including a reflector body and an ultrasonic reflector on the reflector body, and a carrier having first and second carrier ends. The first carrier end is connected to the flow straightener. The second carrier end supports the reflector body. When the flow straightener is in the tube, the device is in an interior of the tube and the ultrasonic reflector deflects an ultrasonic measurement path emanating from the flowmeter so that the path extends through the interior along a longitudinal axis of the tube. The flow straightener has a first rotational symmetry about a first symmetry axis, and the carrier has a second rotational symmetry about a second symmetry axis. The first and second symmetry axes are coaxial. The ultrasonic reflector is spaced from the flow straightener along the second symmetry axis.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
4.
Method for Determining a Flow Rate of a Medium with a Magnetic-Inductive Flowmeter, Method for Operating a Filling System with a Magnetic-Inductive Flowmeter, Magnetic-Inductive Flowmeter and Filling System with a Magnetic-Inductive Flowmeter
A method for determining a flow of a medium with a magnetic-inductive flowmeter includes: flowing a medium through a measuring tube; generating a magnetic field alternating between a first magnetic field strength in first sub-intervals and a second magnetic field strength in second sub-intervals so a measuring voltage present between two measuring electrodes is induced in the medium; carrying out a first measurement in the first sub-intervals and a second measurement in the second sub-intervals; in an interval, carrying out the steps of: determining averaged first and second measurements, determining normalized first and second measurements, determining filtered first measurements by subtracting the normalized first measurement from the first measurement, and determining a filtered second measurement by subtracting the normalized second measurement from the second measurement; and determining a flow rate of the medium using the filtered first and second measurements determined for the interval.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
B67D 7/02 - Appareils ou dispositifs pour transférer des liquides à partir de récipients ou de réservoirs de stockage en vrac vers des véhicules ou des récipients portables, p. ex. pour la vente au détail pour transférer des liquides autres que des carburants ou des lubrifiants
B67D 7/36 - Aménagements des vannes de commande du débit ou de la pression
The invention relates to a nuclear magnetic flowmeter (1) comprising a measuring tube (2), a measuring device (3) and a controller (4). The measuring tube (2) has a measuring-tube longitudinal axis (5). The measuring device (3) comprises a magnetic field generator (6), an antenna device (7) and a measurement longitudinal axis (8). The magnetic field generator (6) extends along the measurement longitudinal axis (8) to generate a magnetic field (10). The controller (4) is designed to carry out nuclear magnetic measurements on a medium (13) in the measuring tube (2) using the antenna device (7). The invention solves the problem of providing a nuclear magnetic flowmeter (1) in which the installation and removal of the measuring tube (2) is simplified. The problem is solved in that the measuring device (3) comprises a receiving device (9) for the measuring tube (2), the receiving device (9) and the measuring tube (2) can be combined and separated, the measuring device (3) and the measuring tube (2), when the receiving device (9) and the measuring tube (2) are combined, can be connected to and disconnected from one another by the receiving device (9), and, when the measuring device (3) and the measuring tube (2) are connected to one another, the measurement longitudinal axis (8) and the measuring-tube longitudinal axis (5) coincide and nuclear magnetic measurements can be carried out by the controller (4) on a medium (13) in the measuring tube (2) using the antenna device (7).
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
6.
Method for Operating an Ultrasonic Flowmeter
and Ultrasonic Flowmeter
A method for operating an ultrasonic flowmeter includes the steps of: emitting a measuring signal having a first part that propagates as an interference signal along and/or within a wall of a measuring tube, and a second part that propagates as a useful signal through a medium flowing through the measuring tube; receiving the interference signal and the useful signal; determining an interference amplitude of the interference signal and determining a useful amplitude of the useful signal; determining an amplitude ratio of the useful amplitude and the interference amplitude; and providing a message if the amplitude ratio falls below a specified lower limit value or exceeds a specified upper limit value. A related ultrasonic flowmeter is also disclosed.
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
A magnetic-inductive flowmeter includes a measuring tube for guiding an electrically conductive medium, a magnetic field device, a magnetic field guiding device, and a control and evaluation unit. The magnetic field device includes at least three coils for generating a magnetic field through the measuring tube. The magnetic field guiding device guides the magnetic field with at least three measuring electrodes for tapping a measurement voltage induced in the medium. The control and evaluation unit generates the magnetic field by energizing the coils and evaluates the measurement voltage. The coils are distributed over a circumference of the magnetic field guiding device, which acts a coil core in a region of the coils, so that the coils are arranged with their coil longitudinal axes in the circumferential direction with respect to the measuring tube. Each of the measuring electrodes is arranged between two coils in the radial direction.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 25/10 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume des débitmètres
8.
Coil Arrangement for a Flowmeter and Method of Manufacturing a Coil Arrangement
A coil arrangement for a flowmeter, in particular a Coriolis flowmeter or a magnetic-inductive flowmeter, having a coil, wherein the coil has a coil body and has at least one coil winding made of an electrically conductive material. The object of providing a coil arrangement that has an advantageous design in comparison to the coil arrangements known from the prior art is achieved in that the coil body is made of a ceramic material and that the coil body is produced by means of an additive manufacturing process. In addition, the invention relates to a flowmeter having a respective coil arrangement as well as a method for manufacturing such a coil arrangement.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
An ultrasonic flowmeter includes first and second ultrasonic transducers and a control and evaluation unit. The first and second ultrasonic transducers include respective transducer housings that are at least partially capable of mechanical oscillation and are at least partially excited to mechanical oscillations for signal emission or signal coupling. The control and evaluation unit controls the first and second ultrasonic transducers and evaluates a measurement signal characterizing a flow rate of a medium. The first ultrasonic transducer has a mechanical oscillation influencing element that influences oscillation behavior of the first ultrasonic transducer such that natural frequencies of the first ultrasonic transducer are frequency-shifted relative to natural frequencies of the second ultrasonic transducer. The measurement signal characterizing the flow rate, which results from the transmitted ultrasonic signal passing through the first and second ultrasonic transducers, is more broadband than after passing through only one of the first and second ultrasonic transducers.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
G01F 1/663 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons en mesurant le décalage de fréquence Doppler
An ultrasonic transducer for an ultrasonic flowmeter includes a piezoelectric transducer element arranged between first and second holding elements. The first holding element, the piezoelectric transducer element and the second holding element are arranged one behind the other along a longitudinal axis of the ultrasonic transducer. The pre-tensioning element is on the side of the first holding element facing away from the piezoelectric transducer element. A connecting element is on the side of the pre-tensioning element facing away from the first holding element. The connecting element serves to preload the pre-tensioning element and is connected to the second holding element. In the loaded state of the pre-tensioning element, a force acts on the first holding element and, via the connecting element, on the second holding element in such a way that the first holding element and the second holding element clamp the piezoelectric transducer element.
G01H 11/08 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores par détection des changements dans les propriétés électriques ou magnétiques par des moyens électriques utilisant des dispositifs piézo-électriques
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet Détails
A flowmeter for a multi-phase medium includes an ultrasonic transducer, a permittivity sensor, and a controller. The ultrasonic transducer converts electrical transmitting signals into ultrasonic transmitting signals, radiates them into the measurement volume, receives reflected ultrasonic receiving signals from the measurement volume, and converts the ultrasonic receiving signals into electrical receiving signals. The controller determines a reflection energy of the ultrasonic receiving signals from the measurement volume using the electrical receiving signals and distinguishes between, on the one hand, the water and the oil and, on the other hand, the gas in the measurement volume using the reflection energy. The controller determines a permittivity of the medium in the measurement volume using the permittivity sensor and distinguishes between, on the one hand, the water and, on the other hand, the oil and the gas in the measurement volume using the permittivity.
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 1/663 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons en mesurant le décalage de fréquence Doppler
An ultrasonic transducer for an ultrasonic flowmeter includes a transducer housing and a transducer element arranged in the transducer housing for generating and/or receiving ultrasonic signals at least in a useful frequency range of the ultrasonic transducer. The transducer housing has an ultrasound window in the region of the transducer element for transmitting the ultrasound signals between the interior and the exterior of the transducer housing. The transducer housing has a fastening section for fastening the ultrasonic transducer to a measuring tube. The transducer housing extends with a transition section between the ultrasound window and the fastening section. The transition section of the transducer housing has, in an attenuation region, a phononic crystal with an acoustic band gap in the useful frequency range, so that the transmission of ultrasonic signals in the useful frequency range between the ultrasound window and the fastening section is at least attenuated.
G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
A method for operating a flowmeter is disclosed. The flowmeter has a sensor for capturing a measured variable indicating the flow, and for converting the measured variable into a signal. The flowmeter also has a control and evaluation unit that determines a flow measurement value for the flow from the signal and outputs an output value representing the flow measurement value. The method includes: determining flow measurement values; forming smoothed flow measurement values over a plurality of flow measurement values, respectively; and activating a low flow cut-off. When the low flow cut-off is activated, the output value is set to zero if: the current smoothed flow measurement value is below a first predetermined limit value; and a predetermined number of flow measurement values has been determined with deactivated low flow cut-off or a predetermined number of smoothed flow measurement values has been formed with deactivated low flow cut-off.
G01F 25/10 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume des débitmètres
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
14.
Method for determining a liquid portion of a flowing medium with a nuclear magnetic flowmeter
A method for determining a liquid portion of a flowing medium with a nuclear magnetic flowmeter includes: generating a gradient magnetic field in a measuring tube volume of the flowmeter; exposing the medium to the gradient magnetic field and a magnetic field generated by a magnetizing device of the flowmeter; generating and irradiating an excitation signal into the magnetized medium for exciting nuclear magnetic resonances therein; measuring nuclear magnetic resonances excited by the excitation signal in the magnetized medium as a measuring signal; determining frequencies of the nuclear magnetic resonances in the measuring signal; assigning the determined frequencies to positions along a first gradient direction in the measuring tube volume; assigning the nuclear magnetic resonances at the positions to liquid and gaseous portions of the medium; and determining a liquid portion of the medium in the measuring tube volume from the positions of the nuclear magnetic resonances.
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
15.
Measuring device, sensor unit and method for determining at least one parameter of a medium
A measuring device with a measuring tube is disclosed. The measuring device includes a sensor unit for capturing a parameter of a medium, a control and evaluation unit, and a deflectable measuring sensor with a cavity and a base unit. The sensor unit is at least partially integrated in the wall of the measuring tube. The measuring sensor is connected to the base unit via a spring element. The base unit is arranged outside of the measuring tube. A side of the measuring sensor is in contact with the medium during operation. The cavity is arranged on the side of the measuring sensor facing the medium. The measuring sensor is integrated into the measuring tube wall in such a way that it can be deflected at least in the plane of the measuring tube wall. The sensor unit has a means for capturing the deflection of the measuring sensor.
G01N 9/32 - Recherche du poids spécifique ou de la densité des matériauxAnalyse des matériaux en déterminant le poids spécifique ou la densité en utilisant les propriétés d'écoulement des fluides, p. ex. l'écoulement à travers des tubes ou des ouvertures
G01F 1/38 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en mesurant la pression ou la différence de pression la pression ou la différence de pression étant produite par une contraction de la veine fluide la pression ou la différence de pression étant mesurée au moyen d'un élément mobile, p. ex. une membrane, un piston, un tube de Bourdon ou une capsule déformable
G01N 11/04 - Recherche des propriétés d'écoulement des matériaux, p. ex. la viscosité, la plasticitéAnalyse des matériaux en déterminant les propriétés d'écoulement en mesurant l'écoulement du matériau à travers un passage étroit, p. ex. un tube, une ouverture
16.
Method for Calibrating a Temperature Measuring Unit Based on Ultrasonic Measurement, Method for Measuring the Temperature of a Medium, Temperature Measuring Unit and Ultrasonic Flowmeter
A method for calibrating a temperature measuring unit based on ultrasound measurement includes: establishing an empirical functional relationship between the medium temperature of a medium to be measured and the velocity of sound of a measurement signal passing through the medium to be measured; capturing at least the velocity of sound of the measurement signal, the temperature measured by means of a temperature sensor, and the time variation of the sensor temperature at at least two measuring points, wherein the at least two measuring points have a different medium temperature; determining the medium temperature from the measured temperature, taking into account the time variation of the sensor temperature, so that at least two pairs of values and exist; running a compensating curve through the pairs of values which corresponds to the empirical functional relationship; and storing the functional relationship.
G01K 11/24 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de la vitesse du son
G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
17.
Method for operating an ultrasonic flowmeter and ultrasonic flowmeter
A method for operating an ultrasonic flowmeter includes: capturing at least one first ringing signal of a first ultrasonic transducer of the ultrasonic flowmeter, and detecting a first ringing debugging signal based on the at least one captured first ringing signal; emitting a first measurement signal into a medium through the first ultrasonic transducer, resulting in a first ringing measurement signal in the first ultrasonic transducer; receiving a measurement signal as a first received signal by the first ultrasonic transducer, wherein the first received signal and the first ringing measurement signal are superimposed to form a first superimposed signal; determining a first correction signal by subtracting the first ringing debugging signal from the first superposition signal; and determining the flow velocity or flow rate of the medium based on the first correction signal.
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
18.
Method for Determining Flow Measurement Values of a Coriolis Mass Flowmeter in the Presence of a of a Two-phase Flow
A method is disclosed for determining flow measurement values of a Coriolis mass flowmeter in the presence of a two-phase flow of a two-phase medium having a gas phase and the subsequent presence of a single-phase flow of a single-phase medium not having a gas phase. The method includes: detecting a start time of a two-phase measurement interval at an onset of the two-phase flow; detecting an end time of the two-phase measurement interval at an end of the presence of the two-phase flow; determining and at least partially storing two-phase flow measurement values of the two-phase flow; determining at least one state variable of the single-phase medium; determining subsequently corrected two-phase flow measurement values as at least indirect input variables of a correction calculation; and outputting the corrected two-phase flow measurement values as individual values or as part of a cumulative flow measurement value.
A magnetic circuit device (1) for a magnetic-inductive flowmeter, having a coil (2) that has a coil core (3). The magnetic circuit device (1) enables an increased range of application, in that it can be flexibly adapted to the geometries of the respective magnetic flow meter due to the fact that the coil core (3) is designed to be flexible in such a way that the coil (2) can be bent from a first shape into a second shape. In addition, a method (100) for manufacturing such a magnetic circuit device (1) involves the steps of provisioning, winding, heating, connecting, bending and fixing of the coil.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A Coriolis mass flowmeter having at least one measuring tube with at least one oscillation generator and at least two oscillation sensors and having at least two node elements. The at least one oscillation generator excites the measuring tube to oscillation during operation. The at least two node elements define the oscillation range. At least one node element has at least one stiffening element. An effective separation of undesired interference oscillations of the measuring tube is achieved by the at least one stiffening element increasing the stiffness of the measuring tube with respect to oscillations orthogonal to the excitation mode and to the Coriolis mode so that, during operation, the oscillation frequency of the oscillation orthogonal to the excitation mode and to the Coriolis mode is greater than the oscillation frequency of the excitation mode, preferably greater than that of the Coriolis mode.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
21.
Method for determining a derived property of a medium and nuclear magnetic measuring device, computer program product and computer-readable storage medium for such
A method includes the steps of: introducing a medium with a first temperature into a measuring volume; carrying out nuclear magnetic measurements on the medium with the first temperature; determining a property of the medium at the first temperature; determining a viscosity of the medium at the first temperature using the property; and determining a derived property of the medium at a second temperature using the property of the medium at the first temperature, the viscosity of the medium at the first temperature, the first temperature, and the second temperature. The property is at least one of a first spin-lattice relaxation time constant, a first spin-spin relaxation time constant, and a first diffusion time constant. The derived property is at least one of a second spin-lattice relaxation time constant, a second spin-spin relaxation time constant, and a second diffusion time constant.
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Flowmeters, coriolis flowmeters; downloadable software for controlling, monitoring and evaluating of flowmeters, especially coriolis flowmeters Computer software as a service services featuring software for controlling, monitoring and evaluating of flowmeters, especially coriolis flowmeters
23.
Magnetic-inductive flowmeter and magnetic circuit device
A magnetic-inductive flowmeter with a measuring tube for guiding an electrically conductive medium, a magnetic circuit device running outside the measuring tube for generating and guiding a magnetic field through the measuring tube, and two electrodes for tapping a measuring voltage induced in the medium. The magnetic circuit device has at least a first coil for generating the magnetic field and first and second pole piece plates, the magnetic field being formed between the pole piece plates, wherein the measuring tube is arranged between the two pole piece plates and wherein the electrodes are arranged on opposite sides of the measuring tube, an imaginary connecting line between the two electrodes running perpendicular to the direction of flow and perpendicular to the direction of the magnetic field. The magnetic field is fed into the pole piece plates by at least two feed-in regions per pole piece plate.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
An ultrasonic flowmeter includes a measuring tube and first and second ultrasonic transducers. The first ultrasonic transducer is an ultrasonic transmitter and/or an ultrasonic receiver, and the second ultrasonic transducer is an ultrasonic transmitter and/or an ultrasonic receiver. The ultrasonic transducers are offset on the measuring tube such that the respective transmitter transmits an ultrasonic signal in the direction of flow or against the direction of flow, and the receiver receives the ultrasonic signal after at least three reflections. A course of the ultrasonic signal defines a signal path with first and second signal path sections. The number of sub-sections of the first signal path section corresponds to the number of sub-sections of the second signal path section. The signal path in the first signal path section has a first direction of rotation, and the signal path in the second signal path section has an opposite, second direction of rotation.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet Détails
An ultrasonic flowmeter having a measuring tube, a control unit, at least one first ultrasonic measuring unit and a second ultrasonic measuring unit, the measuring tube having a measuring tube interior and a measuring tube longitudinal axis, wherein each of the ultrasonic measuring units is arranged on the measuring tube, wherein each ultrasonic measuring unit has a first ultrasonic transducer and a second ultrasonic transducer, the first and the second ultrasonic transducers spanning a sound measuring section with a sound axis. The sound measuring section and the sound axis penetrate the measuring tube interior for carrying out ultrasonic measurements. To provide an ultrasonic flowmeter for reliable measurement of a multi-phase medium, the sound axis of the first ultrasonic measuring unit and the sound axis of the second ultrasonic measuring unit span a sound measuring plane which extends substantially parallel to the longitudinal axis of the measuring tube.
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 1/667 - Dispositions de transducteurs pour les débitmètres à ultrasonsCircuits pour faire fonctionner les débitmètres à ultrasons
G01N 29/024 - Analyse de fluides en mesurant la vitesse de propagation ou le temps de propagation des ondes acoustiques
G01N 29/22 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet Détails
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01N 29/44 - Traitement du signal de réponse détecté
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
26.
Magnetically-inductive flow-measuring device, magnetic circuit device and method for the production of a magnetic circuit device
A magnetically-inductive flow-measuring device, with a measuring tube for guiding an electrically-conductive medium, with a coil for generating a magnetic field that at least partially runs through the measuring tube and with a magnetic circuit device for guiding the magnetic field outside of the measuring tube, the magnetic circuit device has at least one coil core, a first yoke element, a second yoke element, a first pole piece and a second pole piece, the coil core is arranged inside the coil and the measuring tube is arranged between the first pole piece and the second pole piece. To provide a magnetically-inductive flow-measuring device with a magnetic circuit device, the magnetic circuit device is made from an at least partially bent sheet element or from multiple at least partially bent sheet elements.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A magnetic-inductive flowmeter for determining the flow of at least one medium, having first and second parallel measuring tubes for guiding the at least one medium, a magnetic field generating device for generating a magnetic field permeating the measuring tubes perpendicular to the flow direction of the at least one medium, first and second electrode pairs for respectively tapping a first and second measuring voltage induced in the medium, and an evaluation unit for evaluating the measuring voltages. Increased reliability in functioning of the flowmeter and the determined flow and flow difference values is achieved by the first and second electrode pairs being formed together by a first, second and third electrodes, the second electrode being both part of the first electrode pair and part of the second electrode pair and being arranged between the two measuring tubes. The electrodes are arranged perpendicular to the flow and magnetic field directions.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A nuclear magnetic measuring device includes a measuring device having a control unit, a generator unit, a receiving unit, and a measuring signal path with an excitation signal path and a reaction signal path. A first switch is arranged such that, in a first state, the generator unit is connected to the excitation signal path and, in a second state, it is connected to a bypass signal path. A second switch is arranged such that, in the first state, the receiving unit is connected to the reaction signal path and, in a second state, it is connected to the bypass signal path. The control unit (i) controls the switches such that a part of the measuring signal path is bypassed, (ii) generates a test excitation signal, (iii) receives a test reaction signal, and (iv) determines an unstable property of the measuring signal path using the test excitation and reaction signals.
G01R 35/00 - Test ou étalonnage des appareils couverts par les autres groupes de la présente sous-classe
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/36 - Détails électriques, p. ex. adaptations ou couplage de la bobine au récepteur
G01R 33/565 - Correction de distorsions d'image, p. ex. dues à des inhomogénéités de champ magnétique
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
29.
Flow sensor, method and flowmeter for determining speeds of phases of a multi-phase medium
A flow sensor for a multi-phase medium flowmeter has a sensor carrier, and the sensor carrier has at least one first sensor array. The at least one first sensor array has a first permittivity sensor for determining a first permittivity of a multi-phase medium, a second permittivity sensor for determining a second permittivity of the medium, a density sensor for determining a density of the medium, and a first sensor axis. The first permittivity sensor, the second permittivity sensor, and the density sensor are arranged on the sensor carrier along the first sensor axis, and the first permittivity sensor and the second permittivity sensor are spaced apart with a permittivity sensor distance.
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01N 27/22 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la capacité
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
G01N 9/00 - Recherche du poids spécifique ou de la densité des matériauxAnalyse des matériaux en déterminant le poids spécifique ou la densité
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
An ultrasonic flowmeter is provided with at least one measuring tube having at least one recess. Disposed in the recess are at least a first ultrasonic transducer and a second ultrasonic transducer, wherein the first ultrasonic transducer is designed as an ultrasonic transmitter and/or as an ultrasonic receiver and the second ultrasonic transducer is designed as an ultrasonic transmitter and/or as an ultrasonic receiver. Further disposed in the recess is at least one reflection surface. The first and second ultrasonic transducers are arranged on the measuring tube such that the measuring path between the first and the second ultrasonic transducers comprises at least one reflection at the reflecting surface. The provision of the reflection surface in the recess provides an ultrasonic flowmeter with which the flow profile can be easily measured, especially in the edge region.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
The flowmeter having at least one measuring tube and having at least one inlet element, wherein the inlet element is connected to the at least one measuring tube and is arranged before the at least one measuring tube in respect to flow direction. The flowmeter that is also suitable for the verification of erosive media is achieved in that at least one inflow element is provided, wherein the inflow element is arranged at least partly within the inlet element and wherein the inflow element is detachably connectable to the inlet element.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01F 15/00 - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p. ex. pour l'indication à distance
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
32.
Method for determining a flow profile, measurement transducer, magnetic-inductive flowmeter and method of using a magnetic-inductive flowmeter
A method for determining the flow profile in the measuring tube of a magnetic-inductive flowmeter and magnetic inductive flowmeter with which the method is performed, the method having the steps of supplying a first coil with current for generating a first magnetic field with a first exciting current, supplying a second coil with current for generating a second magnetic field with a second exciting current, measuring a first voltage at a first electrode as compared to a generated reference potential, measuring a second voltage at a second electrode as compared to the reference potential generated, and determining vertical and/or horizontal asymmetry of the flow profile from the first measured voltage value and from the second measured voltage value.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
33.
Method for pressure measurement using a Coriolis mass flowmeter and Coriolis mass flowmeter
A method for pressure measurement using a Coriolis mass flowmeter. A temperature sensor measures the temperature of the measuring tube and forwards a measured temperature value to a control and evaluation unit. A tension sensor measures the mechanical tension of the measuring tube in the axial direction and/or in the circumferential direction and forwards a measured axial and/or circumferential tension value to the control and evaluation unit. The pressure of the medium is determined based on the measured temperature value and at least one measured tension value. The pressure value within the measuring tube is determined using an algorithm that takes into account the difference between the measured temperature value and a reference measured value and between at least one measured tension value and reference measured values.
An Ultrasonic flowmeter for measuring the flow of a medium through a measuring tube (3) with at least two ultrasonic transducers (4,5) and at least one control and evaluation unit (6). The measuring tube (3) has an inner wall, the ultrasonic transducers (4, 5) are transmitters (4,5) for transmitting an ultrasonic signal (7) and/or are receivers (4, 5) for receiving the ultrasonic signal, and are arranged offset in the direction of flow such that the respective transmitter (4, 5) transmits an ultrasonic signal (7) in the direction of flow or against the direction of flow during operation. The receiver (4, 5) receives the ultrasonic signal (7) transmitted by the transmitter (4, 5) after at least one reflection on the inner wall of the measuring tube (3), the ultrasonic signal (7) having a first signal component (8) and at least a second signal component (9).
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 5/00 - Mesure d'une fraction du débit volumétrique
G01P 5/24 - Mesure de la vitesse des fluides, p. ex. d'un courant atmosphériqueMesure de la vitesse de corps, p. ex. navires, aéronefs, par rapport à des fluides en mesurant l'influence directe du courant de fluide sur les propriétés d'une onde acoustique de détection
A Coriolis mass flowmeter and a measuring tube unit for use in the Coriolis mass flowmeter with an inlet end and an outlet end, at least two measuring tubes and at least two transition pieces. In each case, one transition piece is arranged on a measuring tube at the inlet end. Each measuring tube has a measuring tube cross section and each transition piece has a transition piece cross section at the inlet. The transition piece is designed in one piece with the associated measuring tube, and the transition piece cross section deviates in its shape and size from the associated measuring tube cross section, the measuring tubes being arranged and aligned in such a manner that the transition piece cross sections form an overall cross section and thus a flow divider.
A Coriolis mass flowmeter with a flange connection for connection to an external pipeline, with at least one oscillation generator, with at least two oscillation sensors, with at least two measuring tubes, with at least one flow divider, wherein the flow divider is arranged upstream of the at least two measuring tubes in the direction of flow, and with at least one flow collector, wherein the flow collector is arranged downstream of the at least two measuring tubes. The Coriolis mass flowmeter has at least an active measuring tube and at least a passive measuring tube being provided, the at least one active measuring tube and the at least one passive measuring tube are designed and arranged separately from one another and the at least one oscillation generator and the at least two oscillation sensors are arranged on the at least one active measuring tube.
A measuring tube for insertion in a measuring tube receptacle of a magnetic-inductive flowmeter and for guiding a medium, with two electrodes for tapping a voltage induced in the medium, wherein the electrodes each extend at least from a medium contact area to a connecting contact area on one end for connection to an evaluating unit. The electrodes are arranged on both sides of the measuring tube in an electrode plane situated perpendicularly on the longitudinal axis of the measuring tube and the electrodes extend parallel to one another and tangential to the measuring tube. The connecting contact areas on the ends of both electrodes are arranged on one side of a reference plane, which is situated perpendicularly on the electrode plane, and wherein the medium contact areas are located at least partially in the reference plane.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
A method for operating a flowmeter for measuring the flow of a flowing medium through a pipe, wherein the flowmeter has a measuring unit for determining individual measured values of the flow and an error unit for determining the measurement uncertainty of the individual measured values. Determination of the individual measured values is carried out using a measuring frequency. A method for operating a flowmeter, which improves the quality of measurement is achieved in that a present measurement uncertainty is determined for each individual measured value by the error unit and by the measurement uncertainties from static and dynamic error sources being linked to one another by error propagation for determining the present measurement uncertainty.
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01F 1/00 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu
G01F 1/05 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
39.
Method for operating a nuclear-magnetic flowmeter and nuclear magnetic flowmeter
A method for operating a nuclear-magnetic flowmeter in which, when determining a velocity of the medium through a measuring tube, the dependency on properties or the state of a medium is at least reduced. The method exciting a first volume of the magnetized medium flowing at a first velocity within a first measuring section to nuclear-magnetic resonances and a first signal sequence is formed characterizing the nuclear-magnetic resonances of the medium in the first volume, and then, exciting a second volume of the magnetized medium flowing at a second velocity within the first measuring section is excited to nuclear-magnetic resonances and a second signal sequence is formed characterizing the nuclear-magnetic resonances of the medium in the second volume. A quotient sequence is determined from each of the first and second signal sequences, and the first velocity and/or the second velocity is/are determined using the quotient sequence.
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01F 15/02 - Compensation ou correction des variations de pression, de poids spécifique ou de température
40.
Method for operating a nuclear magnetic flowmeter and nuclear magnetic flowmeter
A method for operating a nuclear magnetic flowmeter in which the necessary time for determining a longitudinal relaxation time constant of the medium is reduced in comparison to the prior art by at least one nuclear-magnetic measuring process being carried out on a magnetized medium in the measuring tube. The at least one nuclear-magnetic measuring process includes an inversion pulse and acquisition sequences, each acquisition sequence beginning at a starting point in time in respect to the at least one nuclear-magnetic measuring process and has an activating pulse, a first waiting interval, a first refocusing pulse, an echo interval with a duration, a second refocusing pulse, a second waiting interval and a deactivating pulse. An echo signal is measured in the echo interval, and a longitudinal relaxation time constant of the medium is determined using the echo signals.
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01R 33/30 - Dispositions pour le traitement des échantillons, p. ex. cellules d'essai, mécanismes rotationnels
An ultrasonic transducer for an ultrasonic flow meter, with a transducer housing, with a transducer element for generating and/or for receiving ultrasonic signals and with an emitting element, the emitting element being exposed to ultrasonic signals at least indirectly from the transducer element and emitting the ultrasonic signals via one end face on one front side of the emitting element into the vicinity bordering the ultrasonic transducer and/or the emitting element picking up ultrasonic signals from the vicinity via one end face on one front side of the emitting element and transmitting them at least indirectly to the transducer element. A good directional action in spite of small dimensions is achieved by the emitting element being connected to the transducer housing via a connecting element and being free standing on its periphery on the front side such that it can oscillate freely on the periphery.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G10K 9/122 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p. ex. cornes de brume, avertisseurs de véhicule ou vibreurs fonctionnant électriquement utilisant des moyens d'entraînement piézo-électriques
B06B 1/06 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par effet piézo-électrique ou par électrostriction
H04R 1/30 - Combinaisons de transducteurs avec des pavillons, p. ex. avec des moyens d'équilibrage mécanique
H04R 1/34 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en utilisant un seul transducteur avec des moyens réfléchissant, diffractant, dirigeant ou guidant des sons
H04R 7/14 - Membranes non planes ou cônes ondulées, plissées ou nervurées
A measuring device has a flowmeter, an inlet tube and an outlet tube. The flowmeter has a measuring tube that is connected to the inlet tube and to the outlet tube. To provide a measuring device that allows for measurements using a flowmeter, in particular of the liquid components of medium in the measuring tube, independent of whether the medium is made to flow or is stagnant, wherein the measuring tube is completely filled at least with the liquid components of the medium when the medium is stagnant the inlet tube, the measuring tube and the outlet tube form a siphon, wherein the siphon is designed and aligned in respect to the vector of the gravitational field of the earth so that, when a medium initially flows through the siphon and then the flowing of the medium stops, the measuring tube is completely filled with the stagnant medium.
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
G01F 15/00 - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p. ex. pour l'indication à distance
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
43.
Method for equipping a Coriolis mass flowmeter with electric connections
b) as structural parts and such a Coriolis mass flowmeter (2) can be implemented for achieving smaller production tolerances, higher accuracy and reliability in production and operation in that the electric connections (3) are applied on at least one structural part of the Coriolis mass flowmeter (2) by means of a mechanical printing method.
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
G01R 33/36 - Détails électriques, p. ex. adaptations ou couplage de la bobine au récepteur
G01R 33/30 - Dispositions pour le traitement des échantillons, p. ex. cellules d'essai, mécanismes rotationnels
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
An ultrasonic transducer for mounting in an ultrasonic flowmeter for measuring the flow has an electromechanical transducer element for generating ultrasonic signals, a carrier and a housing, the electromechanical transducer element being arranged in the carrier, the housing being formed at least in part of an electroconductive material, the carrier having a carrier material with an acoustic impedance value that lies between the acoustic impedance value of the electromechanical transducer element and the acoustic impedance value of the flowing medium to be measured. To provide an ultrasonic transducer that transmits a high signal portion of the ultrasonic signal into the medium to be measured and simultaneously provides a high operational reliability while being easy to build, the carrier is electroconductive, the carrier and the housing are electroconductively connected to one another and the electromechanical transducer element and the carrier are electroconductively connected to one another.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
46.
Method for flow measurement using a magnetic-inductive flowmeter
A method for flow measurement using a magnetic-inductive flowmeter with a measuring tube and magnetic field generator that allows for detection of a zero flow error is achieved in that the measuring tube is filled with a first medium, the strength of the magnetic field is measured over a first measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the first measuring interval, that a second medium is made to flow through the measuring tube, the strength of the magnetic field is measured over a second measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the second measuring interval, that a deviation of the derivative for the second measuring interval from the derivative for the first measuring interval is determined, and assigned to a zero flow error.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
47.
Method of interpreting NMR signals to give multiphase fluid flow measurements for a gas/liquid system
A method for assessing a gas phase in a flowing multi-phase fluid comprises flowing the fluid through magnetic resonance and pre-polarization modules and applying to the fluid a radio-frequency pulse sequence at least once with and at least once without a magnetic field gradient. The method further includes measuring an NMR signal. The method also includes using a calibration between the ratio of slope and intercept of the NMR signal and flow velocity for at least one non-gas phase with the gradient applied to determine that phase's velocity. A calibration between the signal intensity of the liquid phases as function of flow velocity is used, with and without gradient, to correct the gradient-induced attenuation of the liquid signals and to calculate a gradient-corrected signal intensity of the liquid phases without a magnetic field gradient. Additionally, the method includes subtracting the gradient-corrected signal intensity from the NMR signal to calculate the volumetric fraction of the liquid phase.
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
A magnetic-inductive flow-through measurement system, having a measuring tube for an electrically conductive medium, a magnetic field generating device for generating a magnetic field running at least perpendicular to the longitudinal axis of the measuring tube, at least two measuring electrodes which tap the measurement voltage induced in the electrically conductive medium, and an evaluation unit, wherein the measuring electrodes have measuring contact which are accessible externally on the measuring tube, and the measuring tube together with the measuring electrodes form a first functional unit, and counter-contacts corresponding to the measuring contacts, the magnetic field generating device and the evaluation unit form a second functional unit in a measurement system housing. The measuring electrodes and the corresponding counter-contacts corresponding are arranged in such a way, that the measuring contacts can be brought into electrically conductive contact with the counter-contacts by a movement running substantially perpendicular to the magnetic field direction.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
A measuring tube for magneto-inductive flowmeter systems, having a measuring tube for the flow of an electrically conductive medium and a magnetic field generating device for generating a magnetic field, at least two measuring electrodes which tap the measurement voltage induced in the electrically conductive medium and preferably an evaluation unit. The measuring electrodes have externally accessible measuring contacts, wherein the measuring tube forms a first functional unit with the measuring electrodes, and mating contacts corresponding to the measuring contacts of the measuring electrodes, the magnetic field generating device and an evaluation unit, if present, form a second functional unit. The measuring contacts of the measuring electrodes are provided on the measuring tube in such a manner that they can be brought into electrically conductive contact with the mating contacts by a movement which runs substantially perpendicular to the direction of the magnetic field and is substantially only translational.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
50.
Magnetic-inductive flowmeter and method for producing a measuring electrode
A magnetic-inductive flowmeter with a measuring tube, a magnetic field generator and a measuring electrode in which its measuring electrodes are improved is achieved by the measuring electrode being formed of an outer electrode sheath of an electrically non-conductive plastic and of an inner electrode core of electrically conductive plastic, and by a method for producing the measuring electrode.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
B29C 45/17 - Éléments constitutifs, détails ou accessoiresOpérations auxiliaires
A method for operating a Coriolis mass flowmeter that has at least one measuring tube, at least one oscillation generator, at least two oscillation sensors and at least one evaluation unit, wherein the oscillation sensors and/or oscillation generator has at least one coil, wherein the oscillation generator excites the measuring tube to oscillation, wherein the oscillation sensors detect the oscillations of the measuring tube, wherein the temperature of the measuring tube is determined and wherein the evaluation unit processes the detected oscillation signals and determines state variables of the Coriolis mass flowmeter. The electric impedance of the coil of the oscillation generator and/or the electric impedance of at least one coil of the oscillation sensors is determined and the evaluation unit calculates at least one temperature-dependent state variable which is based on the temperature of the measuring tube and which is corrected based upon the determined impedance of the coil.
A magnetic-inductive flowmeter for measuring flow of a flowing medium, having a measuring tube, a magnetic field generator, at least one measuring electrode and a measuring section that is flat on one side having a planar measuring tube portion. Furthermore, the magnetic field generator has at least one coil core and a pole shoe. The magnetic-inductive flowmeter is improved compared to the prior art by several support lugs being present between the planar measuring tube portion and the pole shoe.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
53.
Magnetic-inductive flowmeter having a central flat measuring tube portion with support ribs
The invention relates to a magnetic-inductive flowmeter having a measuring tube (1), a magnetic field generator (2) and a measuring electrode (3). Thereby, the measuring tube (1) has a measuring section (4) that is flat on one side having a planar measuring tube portion, called portion (5) in the following, and the magnetic field generator (2) has a pole shoe (7). A flowmeter that allows a high measuring accuracy, even under high pressure loads is achieved in that a support rib (9) is implemented on the planar measuring tube portion (5).
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
54.
Nuclear magnetic flowmeter and method for operating nuclear magnetic flowmeters
A nuclear magnetic flowmeter (1) for determining the flow of a medium flowing through a measuring tube (2) having a magnetic field generator (4), a measuring unit (5) and an antennae unit (6) with an antenna (7). wherein the antennae unit (6) has at least one further antenna (11, 12), that is designed as a coil and is designed for transmitting the excitation signal to the magnetized medium (3) and for detecting the measuring signal over a further measuring section (13, 14) aligned parallel to the longitudinal axis (8) of the measuring tube and located in the magnetic field path (9), and the measuring section (10) and the further measuring section (13, 14) are different.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/34 - Détails de structure, p. ex. résonateurs
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
A flowmeter for flow measurement of a flowing medium having a measuring tube and a measuring device housing that can be also used in fields in which magnetic-inductive flowmeters have not previously been used or used only on a small scale—primarily due to costs is achieved by the provision a reinforcement structure is assigned to the measuring tube and/or the measuring device housing, wherein the reinforcement structure is formed of at least one reinforcement unit—preferably of several reinforcement units. The reinforcement units are preferably bolt and tube arrangements received in through-passages or external recesses formed in the housing.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
W, a nuclear magnetic measurement is carried out in that the medium is excited with excitation pulses by the coil-shaped antenna and the measuring signals generated by the excitation in the medium are detected.
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
57.
Device for determining temperature as well as measuring arrangement for determining flow
A device (1) for determining temperature and a measuring arrangement for determining flow that allows for a secure attachment on an object. The device has a measuring element (2) with a temperature-dependent electric resistance value. The measuring element (2) is surrounded by a thermally conductive fixing element (5) and is encompassed by a retaining bracket (6).
G01F 1/68 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets thermiques
G01F 1/684 - Dispositions de structureMontage des éléments, p. ex. relativement à l'écoulement de fluide
G01K 7/16 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01F 1/86 - Débitmètres massiques indirects, p. ex. mesurant le débit volumétrique et la densité, la température ou la pression
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
58.
METHOD FOR OPERATING A NUCLEAR MAGNETIC RESONANCE FLOW METER AND NUCLEAR MAGNETIC RESONANCE FLOW METER
The invention relates to a method for measuring the flow rate of a multi-phase medium flowing through a measuring tube, by means of a nuclear magnetic resonance flow meter comprising a pre-magnetization device and a measuring device, said pre-magnetization device implementing at least two pre-magnetization paths of different lengths L1, L2,.... The aim of the invention is to provide a method which can be used to measure the flow rate of a multi-phase medium in a simplified manner. For this purpose, a measuring device is used which implements, at the end of each pre-magnetization path, 2D tomography in the measurement tube cross-sectional plane with stratification in the z direction; the measurement tube cross-sectional plane is subdivided into layers that are thin compared to the measurement tube diameter; nuclear magnetic resonance measurements are carried out in every layer to determine measurement signals, using pre-magnetization paths of different lengths; the flow rates are measured in every layer based on the measurement signals; and the time T1 is determined from the signal ratios of the amplitudes of the measurement signals in every layer.
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/44 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique utilisant la résonance magnétique nucléaire [RMN]
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
A method for operating a nuclear magnetic flowmeter for determining the flow of a slug flow medium flowing through a measuring tube, with which “tuning” parameters and “matching” parameters are set for a slug zone a film zone, reflected power is measured over time. If the reflected power in a system set for slug zone is low for the slug zone and high for the film zone and if the reflected power in a system set for film zone is low for the film zone and high for the slug zone, relative dwell time of the slug zone and the film zone in the RF coil and the relative frequency of the slug zones and film zones in the flowing medium are determined using the reflected power with a jump in the value of the reflected power from a high value to a lower value used to trigger measurement initiation.
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01R 33/30 - Dispositions pour le traitement des échantillons, p. ex. cellules d'essai, mécanismes rotationnels
A Coriolis mass flowmeter having at least one measuring tube that is excitable to oscillations, at least one oscillation generator, at least two oscillation sensors for receiving oppositely influenced oscillation parts of the measuring tube oscillation, at least one evaluation unit and at least two holding devices for holding the oscillation sensors, wherein at least one part of an oscillation sensor is attached to each holding device. Additionally, a Coriolis mass flowmeter that requires little service and is easy to repair, is implemented in that the oscillation sensors each comprise at least one primary oscillation sensor and a secondary oscillation sensor, and that the primary oscillation sensor and the secondary oscillation sensor are connected to the evaluation unit in such a manner that the measuring signal of the primary oscillation sensor and the measuring signal of the secondary oscillation sensor can be detected separately by the evaluation unit.
A Coriolis mass flowmeter having at least one curved measuring tube having an inlet end, outlet end and a central curved section between the inlet end and outlet end, a carrier bridge extending between the inlet end and outlet end of the measuring tube and fixing the measuring tube ends, at least one oscillation generator attached to the measuring tube, at least one oscillation sensor for detecting measuring tube oscillations, an evaluation unit for evaluating detected measuring tube oscillations, and wherein the measuring tube extends through at least one opening from an inner area of the carrier bridge out of the carrier bridge into the outer area of the carrier bridge, the central curved section running outside of the carrier bridge. A conductor guiding structure is arranged on the carrier bridge extending toward the oscillation sensor and the conductor arrangement fixed on the conductor guiding structure.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01R 33/30 - Dispositions pour le traitement des échantillons, p. ex. cellules d'essai, mécanismes rotationnels
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
63.
Method for production of a magnetic-inductive flow meter
A method of producing a magnetic-inductive flow meter with at least one measurement tube, a magnetic field generating apparatus for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measurement tube, and two measurement electrodes, the measurement tube having a metallic base body provided with a thermoplastic cover layer, a virtual connecting line of the two measurement electrodes running perpendicular to the direction of the magnetic field which is permeating the measurement tube perpendicular to the longitudinal axis of the measurement tube. The penetration sites of the measurement tube at which the measurement electrodes penetrate the measurement tube are easily made liquid-tight by a liquid-tight connection which has been produced by heating of the cover layer at the penetration sites for sealing the thermoplastic cover layer of the measurement tube to the measurement electrodes.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A method for operating a nuclear magnetic flowmeter having a measuring device for determining the flow of the medium through the measuring tube, the measuring device having a magnetic field generator for generating a magnetic field permeating the medium and the measuring tube and for carrying out nuclear magnetic measurements of measuring volumes that are adjustable in position and size in the magnetic field. The nuclear magnetic measurements involve adjusting the size of the measuring volume, positioning the measuring volume, generating excitation signals for exciting the medium, transmitting excitation signals into the measuring volume and measuring echo signals caused by the excitation signals. Deposits on the inner wall of the measuring tube are determined from echo signals of all nuclear magnetic measurements assigned to the position of the measuring volume of the respective nuclear magnetic measurement and at least one abrupt change in the echo signals detected.
G01F 1/00 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
65.
Flowmeter with a measuring device implementing a tomographic measuring principle
A flowmeter for determining the flow of a multi-phase medium through a measuring tube has a first and a second measuring device, one of which operates on a tomographic measuring principle and one of uses a measuring principle based on nuclear magnetic resonance. The first measuring device operates in a different manner from the second measuring device, e.g., using a measuring device operating on the measuring principle of pre-magnetization contrast measurement and having a pre-magnetization section with a constant magnetic field. The magnetic field has at least one component perpendicular to the direction of flow of the multi-phase medium and is generated by using magnetic field generating elements, which are arranged around the measuring tube. Additionally, an assembly for exciting nuclear spin by a RF excitation pulse or a RF excitation pulse sequence is part of the measuring device.
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A magnetic-inductive flowmeter, having a plurality of functional units and a housing common to all the functional units, wherein each functional unit has a measuring tube, a magnetic field generating device, and two measuring electrodes, and wherein a virtual connecting line of the two measuring electrodes extends at least substantially at right angles to the direction of the magnetic field penetrating the measuring tube at right angles to the longitudinal axis of the measuring tube. In the housing, there is a common medium feed connection for the measuring tubes of all the functional units, a common power supply for the magnetic field generating device of all the functional units, and a common evaluation unit for the measuring electrodes of all the functional units. The magnetic field generating device has a field coil adjoined on both sides by a magnetic field guide part extending at right angles to the coil axis.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A magnetic-inductive flowmeter has a plurality of functional units and a housing which is common to all of the functional units. Each functional unit has a measuring tube for an electrically conductive medium to flow through, a magnetic field-generating device having at least one field coil for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measuring tube, and two measuring electrodes. A virtual connecting line between the measuring electrodes runs at least substantially perpendicular to the direction of the magnetic field which passes through the measuring tube. A common medium-inflow connection is created in the housing for the measuring tubes of all of the functional units, a common power supply is created for the magnetic field-generating device of all of the functional units, and a common evaluation unit is created for the measuring electrodes of all of the functional units.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
Ultrasonic flowmeter having a transducer housing with an ultrasound window which is mounted in a transducer pocket, and a shielding for protecting the ultrasonic signal path from the effects of vortices generated by the transducer pocket
An ultrasonic flowmeter for measuring the flow of a flowing medium (1) having a measuring tube (2) and an ultrasonic transducer (3), wherein the measuring tube (2) has a transducer pocket (4) in which the ultrasonic transducer (3) is provided in contact with the flowing medium (1) in the transducer pocket (4). The ultrasonic transducer (3) has a transducer housing (5) and a transducer element (6) and wherein the transducer housing (5) has an ultrasound window (8). The ultrasonic flowmeter solves problems resulting from vortices generated by the transducer pocket via the provision of a cylindrical shielding on the transducer housing (5).
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 1/32 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement utilisant des débitmètres à tourbillons
G10K 11/00 - Procédés ou dispositifs pour transmettre, conduire ou diriger le son en généralProcédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général
69.
MAGNETIC-INDUCTIVE FLOW-THROUGH MEASUREMENT SYSTEM
Described and illustrated is a magnetic-inductive flow-through measurement system, comprising a measuring tube (1) for an electrically conductive medium to flow through, and comprising a magnetic field generating device (2) for generating a preferably alternating magnetic field running at least also perpendicular to the longitudinal axis of the measuring tube (1), comprising at least two measuring electrodes (3, 4) which tap the measurement voltage induced in the electrically conductive medium and which preferably make contact with the medium, and comprising an evaluation unit (not shown), wherein the measuring electrodes (3, 4) have measuring contacts (5, 6) which are accessible externally on the measuring tube (1), and the measuring tube (1) together with the measuring electrodes (3, 4) form a first functional unit, and counter-contacts (7, 8) corresponding to the measuring contacts (5, 6) of the measuring electrodes (3, 4), the magnetic field generating device (2) and the evaluation unit (not shown) form a second functional unit, and wherein the counter-contacts (7, 8), the magnetic field generating device (2) and the evaluation unit (not shown) are provided in a measurement system housing (not shown). The known magnetic-inductive flow-through measurement systems have design and connection disadvantages, and one of the objects of the invention is to eliminate these disadvantages. This object is achieved in that the measuring contacts (5, 6) of the measuring electrodes (3, 4) are provided on the measuring tube (1) in such a way, and the counter-contacts (7, 8) corresponding to the measuring contacts (5, 6) of the measuring electrodes (3, 4) are arranged in the measurement system housing in such a way, that the measuring contacts (5, 6) can be brought into electrically conductive contact with the counter-contacts (7, 8) by a movement running substantially perpendicular to the magnetic field direction, this movement being substantially only a translational movement.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
70.
MEASURING TUBE FOR MAGNETO-INDUCTIVE FLOW-MEASURING SYSTEMS
The invention describes and presents a measuring tube (1) for magnetoinductive flowmeter systems, wherein the flowmeter systems have the measuring tube (1) for the flow of an electrically conductive medium and a magnetic field generating device for generating a magnetic field running at least also perpendicular to the longitudinal axis of the measuring tube (1), at least two measuring electrodes (3, 4) which tap off the measurement voltage induced in the electrically conductive medium and preferably an evaluation unit, wherein the measuring electrodes (3, 4) have measuring contacts (5, 6) which are accessible on the outside of the measuring tube (1), wherein the measuring tube (1) forms a first functional unit with the measuring electrodes (3, 4), and mating contacts corresponding to the measuring contacts (5, 6) of the measuring electrodes (3, 4), the magnetic field generating device and the evaluation unit, if such an evaluation unit is present, form a second functional unit, and wherein the mating contacts (5, 6), the magnetic field generating device and the evaluation unit, if such an evaluation unit is present, are provided in a measuring system housing. According to the invention, the measuring contacts (5, 6) of the measuring electrodes (3, 4) are designed and provided on the measuring tube (1) in such a manner that the measuring contacts can be brought into electrically conductive contact with the mating contacts by means of a movement which runs substantially perpendicular to the direction of the magnetic field and is substantially only translational.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
71.
MEASURING TUBE FOR MAGNETOINDUCTIVE FLOWMETER SYSTEMS
The invention describes and presents a measuring tube (1) for magnetoinductive flowmeter systems, wherein the flowmeter systems have the measuring tube (1) for the flow of an electrically conductive medium and a magnetic field generating device for generating a magnetic field running at least also perpendicular to the longitudinal axis of the measuring tube (1), at least two measuring electrodes (3, 4) which tap off the measurement voltage induced in the electrically conductive medium and preferably an evaluation unit, wherein the measuring electrodes (3, 4) have measuring contacts (5, 6) which are accessible on the outside of the measuring tube (1), wherein the measuring tube (1) forms a first functional unit with the measuring electrodes (3, 4), and mating contacts corresponding to the measuring contacts (5, 6) of the measuring electrodes (3, 4), the magnetic field generating device and the evaluation unit, if such an evaluation unit is present, form a second functional unit, and wherein the mating contacts (5, 6), the magnetic field generating device and the evaluation unit, if such an evaluation unit is present, are provided in a measuring system housing. According to the invention, the measuring contacts (5, 6) of the measuring electrodes (3, 4) are designed and provided on the measuring tube (1) in such a manner that the measuring contacts can be brought into electrically conductive contact with the mating contacts by means of a movement which runs substantially perpendicular to the direction of the magnetic field and is substantially only translational.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
72.
Homogenization device for homogenization of a magnetic field
A homogenization device for homogenization of a magnetic field with an non-magnetic carrier and compensation elements formed of a magnetic material, the carrier having a carrier wall and the carrier wall surrounding a carrier interior, in the homogenization device located in the magnetic field the magnetic field penetrating into the carrier interior through a first carrier region of the carrier wall and emerging from the carrier interior through a second carrier region of the carrier wall and each of the compensation elements which are located on the carrier contributing to the homogenization of the magnetic field at least in the carrier interior. In the homogenization device, handling during homogenization is improved in that there are recesses in the carrier wall and in each of the recesses at least one of the compensation elements can be directly inserted and removed.
G01R 33/38 - Systèmes pour produire, homogénéiser ou stabiliser le champ magnétique directeur ou le champ magnétique à gradient
G01R 33/3873 - Compensation des inhomogénéités utilisant des corps ferromagnétiques
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01R 33/24 - Dispositions ou appareils pour la mesure des grandeurs magnétiques faisant intervenir la résonance magnétique pour la mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
G01R 33/34 - Détails de structure, p. ex. résonateurs
G01R 33/3875 - Compensation des inhomogénéités utilisant des ensembles de bobines de correction, p. ex. compensation active
G01F 15/00 - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p. ex. pour l'indication à distance
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
73.
NUCLEAR MAGNETIC FLOWMETER AND METHOD FOR OPERATING NUCLEAR MAGNETIC FLOWMETERS
The invention describes and illustrates a nuclear magnetic flowmeter (1) for determining the flow rate of a medium flowing through a measuring tube (2), having a magnetic field generation device (4), a measuring device (5) and an antenna device (6) with an antenna (7), wherein the magnetic field generation device (4) permeates the flowing medium (3) with a magnetic field having at least one component perpendicular to the longitudinal axis (8) of the measuring tube via a magnetic field section (9) oriented parallel to the longitudinal axis (8) of the measuring tube in order to magnetize the medium (3), wherein the measuring device (5) is designed to generate excitation signals which excite the magnetized medium (3) and to measure the measurement signals caused by the excitation signals in the magnetized medium (3), and wherein the antenna (7) is in the form of a coil and is designed to transmit the excitation signals to the magnetized medium (3) via a measurement section (10) which is oriented parallel to the longitudinal axis (8) of the measuring tube and is in the magnetic field section (9) and to detect the measurement signals. The invention specifies a nuclear magnetic flowmeter (1) having improved reliability, specifically as a result of the fact that the antenna device (6) has at least one further antenna (11, 12), the further antenna (11, 12) is in the form of a coil and is designed to transmit the excitation signals to the magnetized medium (3) via a further measurement section (13, 14) which is oriented parallel to the longitudinal axis (8) of the measuring tube and is in the magnetic field section (9) and to detect the measurement signals, and the measurement section (10) and the further measurement section (13, 14) are different.
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
A signal analyzer for nuclear magnetic flowmeters is provided. The signal analyzer can be placed in a power signal path between a signal generator that generates an electric excitation signal and an electrical load. The signal analyzer includes a power signal line in the power signal path for the transmission of electrical signals. The signal analyzer also includes a decoupling circuit for decoupling a first signal characterizing the excitation signal occurring in the load and for decoupling of a second signal characterizing the part of the excitation signal reflected at the load. The signal analyzer further includes a first attenuator and a second attenuator. Additionally, the signal analyzer includes a detector for determining the ratio of the magnitude of the first signal to the magnitude of the second signal and for determining the phase difference between the first signal and the second signal.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01R 33/36 - Détails électriques, p. ex. adaptations ou couplage de la bobine au récepteur
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
A nuclear magnetic flowmeter is disclosed. The nuclear magnetic flowmeter includes a magnetization device located around a straight measuring tube for producing a magnetic field in a medium. The flowmeter also includes a gradient coil that produces a gradient in the field. The flowmeter further includes a signal coil that excites the medium and that detects the result of the excitation. Additionally, the flowmeter includes a coil insulating frame and a sealed housing. The housing is along a longitudinal axis of the tube and has a first face side and a second face side having openings through which the tube is routed. The magnetization device is provided in the interior of the housing. The gradient coil and the signal coil are located in a space between the tube and magnetization device that is penetrated by the field. The gradient coil and/or the signal coil are located on the frame.
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01R 33/563 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne de matériaux en mouvement, p. ex. angiographie à écoulement contrasté
G01R 33/30 - Dispositions pour le traitement des échantillons, p. ex. cellules d'essai, mécanismes rotationnels
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
An ultrasonic transducer as an important part of an ultrasonic flow meter is described, with a transducer housing and with a transducer element, the transducer housing having an ultrasound window and a housing tube, the transducer element being made for sending or receiving ultrasonic waves and being either near the ultrasound window of the transducer housing or away from the ultrasound window of the transducer housing, there being a relatively soft mechanical coupling system and the mechanical coupling system having preferably at least one weakly coupled mechanical resonator. The ultrasonic transducer is improved with respect to the prevention of the transmission of housing waves by there being a second soft mechanical coupling system.
H01L 41/09 - Eléments piézo-électriques ou électrostrictifs à entrée électrique et sortie mécanique
H01L 41/113 - Eléments piézo-électriques ou électrostrictifs à entrée mécanique et sortie électrique
H01L 41/053 - Montures, supports, enveloppes ou boîtiers
G10K 11/00 - Procédés ou dispositifs pour transmettre, conduire ou diriger le son en généralProcédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
77.
Unit consisting of an ultrasonic transducer and a transducer holder
An ultrasonic transducer and a transducer holder for preventing the transmission of housing waves has a decoupling ring between a housing flange of a transducer housing and a holder flange of the transducer holder. Preferably, there is a gasket between the housing flange of the transducer housing and the decoupling ring in addition to a gasket between the decoupling ring and the holder flange of the transducer holder.
G01H 3/00 - Mesure des vibrations en utilisant un détecteur dans un fluide
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
An ultrasonic transducer has a transducer housing having an ultrasound window, a housing tube and a housing flange, a transducer holder for holding the transducer housing, a transducer element with an ultrasonic flow rate measuring transducer that is positioned at an end of the housing tube of the transducer, and an opposing flange clamping the housing flange of the transducer housing to a holder flange of the transducer holder together with retraining screws and lock nuts. A side of the housing flange of the transducer housing facing the opposing flange has an outer contour which enables bracing of the opposing flange against the housing flange without tilting or bending of the housing flange.
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 15/18 - Supports ou moyens de raccordement pour les compteurs
79.
Nuclear magnetic flow meter and method for operation of nuclear magnetic flow meters with an additional measuring device operating on a different principle
A nuclear magnetic flow meter for measuring the flow rate of a multiphase medium which is flowing through a measuring tube with a nuclear magnetic measurement device, the nuclear magnetic measurement device being located around the measuring tube. The accuracy of the measurement of the flow rate for the gaseous phase is achieved in that, in addition to the nuclear magnetic measurement device, there is a further measurement device which implements another measurement principle, e.g. a differential pressure flow rate measurement device for measuring the differential pressure of the medium in the measuring tube. At least one pressure gauge at each of two measurement sites which are different in the longitudinal direction of the measuring tube.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
A measuring system for nuclear magnetic measuring devices having a controller, a signal generator and a signal processor with signal path having an input stage and a signal conditioner, interfering signals caused by the excitation signals and not occurring simultaneously with the measuring signals being received at an input of the input stage, the measuring signal having signal swing less than that of the interfering signal and the controller determining excitation signal output instants. A switch is located in the signal path between the input stage output and the signal conditioner input, and being switchable between first and second switching states by the controller. The controller switches the switch in the first switching state only in the periods in which there are no interfering signals at the input stage input, and a dynamic range of the signal conditioner input is adapted to the voltage swing of the measuring signals.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01R 33/56 - Amélioration ou correction de l'image, p. ex. par des techniques de soustraction ou d'établissement de moyenne
G01R 33/36 - Détails électriques, p. ex. adaptations ou couplage de la bobine au récepteur
G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
81.
Flowmeter having electrical sensor elements connected in series and applied to an outer surface of a guide structure
A flowmeter has a guide structure that can have medium flowing through it and which preferably operates using the Coriolis principle. To provide a flowmeter that allows a high as possible measuring accuracy with a space requirement that is as small as possible, at least one sensor element is applied on an outer surface of the guide structure for determining and/or monitoring at least one process variable.
A magnetic-inductive flow meter with at least one measurement tube, a magnetic field generating apparatus for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measurement tube, and two measurement electrodes, the measurement tube having a metallic base body provided with a thermoplastic cover layer, a virtual connecting line of the two measurement electrodes running perpendicular to the direction of the magnetic field which is permeating the measurement tube perpendicular to the longitudinal axis of the measurement tube. The penetration sites of the measurement tube at which the measurement electrodes penetrate the measurement tube are easily made liquid-tight by a liquid-tight connection which has been produced by heating of the cover layer at the penetration sites for sealing the thermoplastic cover layer of the measurement tube to the measurement electrodes.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
The invention describes and illustrates a magnetic-inductive flowmeter, having a plurality of functional units (5) and having a housing (6) common to all the functional units (5), wherein each functional unit (5) has a measuring tube (1) for an electrically conductive medium to flow through, a magnetic field generating device (2) having at least one field coil (6) for generating a magnetic field at least also extending at right angles to the longitudinal axis of the measuring tube (1), and two measuring electrodes (3, 4), and wherein the virtual connecting line of the two measuring electrodes (3, 4) extends at least substantially at right angles to the direction of the magnetic field penetrating the measuring tube (1) at right angles to the longitudinal axis of the measuring tube (1). In the exemplary embodiment illustrated, in the housing (6) there are implemented a common medium feed connection (7) for the measuring tubes (1) of all the functional units (5), a common power supply (8) for the magnetic field generating device (2) of all the functional units (5), and a common evaluation unit (9) for the measuring electrodes (3, 4) of all the functional units (5). Otherwise, the magnetic field generating device (2) has a field coil (10) and, in each case the field coil (10) is adjoined on both sides by a magnetic field guide part (17) extending at right angles to the coil axis (16).
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
The invention describes and illustrates a magnetic-inductive flowmeter having a plurality of functional units (5) and having a housing (6) which is common to all of the functional units (5), wherein each functional unit (5) has a measuring tube (1) for an electrically conductive medium to flow through, a magnetic field-generating device (2) having at least one field coil (6) for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measuring tube (1), and two measuring electrodes (3, 4), and wherein the virtual connecting line between the two measuring electrodes (3, 4) runs at least substantially perpendicular to the direction of the magnetic field which passes through the measuring tube (1) perpendicular to the longitudinal axis of the measuring tube (1). In the illustrated exemplary embodiment, a common medium-inflow connection (7) is created in the housing (6) for the measuring tubes (1) of all of the functional units (5), a common power supply (8) is created for the magnetic field-generating device (2) of all of the functional units (5), and a common evaluation unit (9) is created for the measuring electrodes (3, 4) of all of the functional units (5).
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A magnetization device with a magnetic field which is generated by permanent magnets for variable magnetization of a medium flowing through a tube over a magnetization distance along the longitudinal axis of the tube. The magnetization device improves the quality of the results relative to known nuclear magnetic resonance measurement and analysis methods in that the magnetic field in the medium has a single direction over the magnetization distance.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
A magnetic-inductive flowmeter with a measuring tube having a measuring section, a magnetic field generating apparatus for generating a magnetic field in the measuring section of the measuring tube, and two electrodes which are located in the measuring section of the measuring tube for detecting the measurement voltage, the magnetic field generating apparatus having magnet coils which are located outside of the measuring section of the measuring tube and have a respective coil core. The cores of the magnet coils with reference to the magnetic flux make contact with two yoke elements via magnetic connection elements in a magnetically highly conductive manner and the yoke elements partially border the measuring section of the measuring tube.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A nuclear magnetic flowmeter with a measuring tube through which a multiphase medium can flow and which can be connected to an inlet tube which is located in the flow direction of the medium upstream of the measuring tube and to an outlet tube which is located in the flow direction downstream of the measuring tube. The nuclear magnetic flowmeter is, first of all, characterized essentially in that a medium bypass is assigned to the measuring tube, that the medium bypass includes a bypass tube, an inlet valve and/or an outlet valve and that, for a calibration operation, the bypass tube, on the one hand, can be connected to the inlet tube, and on the other hand, to the outlet tube, specifically via the inlet valve, via the outlet valve or via the inlet valve and via the outlet valve.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
G01F 5/00 - Mesure d'une fraction du débit volumétrique
The invention describes and illustrates a system (1) for throughflow measurement, the system having at least one first throughflow measurement unit (2) and one second throughflow measurement unit (3). The invention is based on the problem of proposing a system for throughflow measurement, which system permits self-monitoring in a simple manner. In the case of the system in question, the problem is solved in that the first throughflow measurement unit (2) and the second throughflow measurement unit (3) differ from one another and/or exhibit different orientations for the throughflow measurement and have in each case one evaluation unit (4, 5) that generates data from the throughflow measurement. Also provided is a monitoring device (6) which is connected to the evaluation units (4, 5) such that it receives data generated by the evaluation units (4, 5) and which is configured such that, on the basis of a comparison of the data received from the evaluation units (4, 5), it generates at least one comparison result and signals at least the occurrence of a fault state associated with at least one comparison result.
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
G01F 15/00 - Détails des appareils des groupes ou accessoires pour ces derniers, dans la mesure où de tels accessoires ou détails ne sont pas adaptés à ces types particuliers d'appareils, p. ex. pour l'indication à distance
A system for measuring flow rate with at least a first and a second flow meter provides a flow-rate measurement system which easily allows self-monitoring. This result is achieved by the system in that the first flow meter and the second flow meter differ from one another and/or have different orientations for the flow rate measurement, and each have an evaluation unit which produces data from the flow rate measurement. Furthermore, there is a monitoring device which is connected to the evaluation units such that the monitoring device acquires data produced by the evaluation units, and which is made such that it produces at least one comparison result from a comparison of the data produced by the evaluation units and signals at least the occurrence of a fault state which is associated with at least one comparison result.
G01F 1/00 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu
G01F 1/712 - Mesure du temps de parcours d'une distance déterminée utilisant des moyens de détection à autocorrélation ou à intercorrélation
G01F 7/00 - Dispositifs de mesure du débit volumétrique avec plusieurs gammes de mesureCompteurs composés
G01F 25/00 - Test ou étalonnage des appareils pour la mesure du volume, du débit volumétrique ou du niveau des liquides, ou des appareils pour compter par volume
G01F 1/66 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en mesurant la fréquence, le déphasage, le temps de propagation d'ondes électromagnétiques ou d'autres types d'ondes, p. ex. en utilisant des débitmètres à ultrasons
90.
Magnetization device for a nuclear magnetic flow meter
A magnetization device for permeation of a multiphase fluid flowing through a measurement tube of a nuclear magnetic flow meter with a magnetic field which is homogenous at least in one plane, with a plurality of permanent magnets for generation of a magnetic field and with a carrier, the carrier having at least one magnet receiver, each magnet receiver accommodating at least one of the permanent magnets, the shape of the magnet receivers and of the permanent magnets allowing movement of the permanent magnets in the magnet receivers only in one direction and the permanent magnets being by the magnet receivers formed by hollow profiles. The hollow profile magnet receivers can be receiving tubes for the magnets that can be turned around their longitudinal axis or the profiles can have a rotatable adapter for the magnets so that a first shimming action can be achieved with the profiles.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
G01F 1/74 - Dispositifs pour la mesure du débit d'un matériau fluide ou du débit d'un matériau solide fluent en suspension dans un autre fluide
A magnet module for a nuclear magnetic flow meter including at least one permanent magnet and a jacket. The jacket protects the at least one permanent magnet against peeling of magnet material by mechanical loads when the magnet module is introduced into a magnet receiver of the flow meter, simplifies introduction of the permanent magnets into the magnet receivers by reduced friction between the magnet module and the magnet receivers, and influences the magnetic field which generated by the permanent magnets.
G01V 3/00 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 1/716 - Mesure du temps de parcours d'une distance déterminée utilisant la résonance paramagnétique électronique [RPE] ou la résonance magnétique nucléaire [RMN]
92.
Magnetic-inductive flow meter with a partially constricted measuring tube flow cross-section
A magnetic-inductive flow meter including a measuring tube, a magnetic circuit device, and two electrodes for detecting a measurement voltage. The measuring tube includes an inflow section, a measurement section that adjoins an inflow section, and an outflow section that adjoins the measurement section. A flow cross section of the measurement section is smaller than an inlet-side flow cross section of the inflow section and smaller than an outlet-side flow cross section of the outflow section. The electrodes are located on or in opposite electrode sections in the measurement section.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
G01F 15/14 - Revêtements, p. ex. avec un matériau spécial
A Coriolis mass flow meter (1) which has at least two curved measurement tubes (2), at least one actuator arrangement, at least one sensor arrangement and comprising at least one housing structure (5), the measurement tubes (2) being connected at their inlet end portion and an outlet end portion with at least a first oscillation node plate (3) and a second oscillation node plate (4). The flow meter achieves increased measurement accuracy and a reduced susceptibility to perturbing oscillations by at least one of the oscillation node plates being connected at the inlet end and the outlet end of the housing structure (5). A third oscillation node plate (6) can be additionally arranged on the inlet end portion and the outlet end portion of the tubes, the third oscillation node plate being connected to the housing structure.
A magnetic-inductive flow meter including a measuring tube, a magnetic circuit device, and two electrodes for detecting a measurement voltage. The measuring tube includes an inflow section, a measurement section that adjoins an inflow section, and an outflow section that adjoins the measurement section. A flow cross section of the measurement section is smaller than an inlet-side flow cross section of the inflow section and smaller than an outlet-side flow cross section of the outflow section. The electrodes are located on or in opposite electrode sections in the measurement section.
G01F 1/56 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques
A Coriolis mass flowmeter with a measuring tube through which a medium can flow, at least one actuator and at least one sensor, wherein the measuring tube is bent between its input and output ends into a first winding and a second winding, the first winding and the second winding merging into one another at a transitional section of the measuring tube. The first winding and the second winding run in parallel winding planes and wherein the first winding and the second winding can be excited to oscillation by the actuator and the oscillations detected by the sensor. The Coriolis mass flowmeter is comparably insensitive to the coupling of external oscillations in that oscillating sections of the first winding and the second winding are bent into a V shape that opens in a direction toward the transitional section of the measuring tube.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
A Coriolis mass flowmeter with at least four bent measuring tubes, at least one actuator assembly and at least one sensor assembly, wherein a first measuring tube and a second measuring tube are located in a common first plane and a third measuring tube and a fourth measuring tube are located in a common second plane, wherein the first plane and the second plane run parallel to one another, and wherein all four measuring tubes are joined together in terms of flow on the input side and on the output side with a collector. A Coriolis mass flowmeter for large amounts of flow, which is improved in respect to its measurement accuracy, is implemented in that the geometry and/or the surface characteristics of the measuring tubes are set so that the tube flow resistance of all four measuring tubes is identical.
What is described and illustrated is: a magnetic circuit apparatus (1) for implementing the magnetic circuit of a magnetically inductive flowmeter, with at least one coil (2b) inducing a magnetic field, with at least two mutually opposite two-dimensional pole elements (3a, 3b), between which, in the installed state, the measuring tube of the magnetically inductive flowmeter is located, and with at least one magnetically conductive connecting element (4a, 4b) for magnetically closing the magnetic circuit. According to the invention, the cross section of the coil core (2a) of the coil (2) and/or of the magnetically conductive connecting element or the magnetically conductive connecting elements (4a, 4b) is as small as possible. Preferably, the magnetically conductive connecting element or the magnetically conductive connecting elements (4a, 4b) is/are arcuate, with the result that the resulting magnetic circuit apparatus (1) has an annular outer contour and surrounds at least one of the two-dimensional pole elements (3a, 3b) with a wide gap.
G01F 1/58 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets électriques ou magnétiques par débitmètres électromagnétiques
