The invention relates to a Coriolis mass flowmeter comprising a measuring transducer having at least one measuring tube (10), an exciter arrangement, a sensor arrangement and an electronic transformer circuit (US) electrically coupled to both the exciter arrangement and the sensor arrangement having measurement and control electronics (DSV) and having drive electronics (EXc) connected to the measurement and control electronics and/or activated by the measurement and control electronics. The measuring tube is configured to guide an at least intermittently flowing fluid medium to be measured and to be caused to vibrate during the guiding process. Additionally, the exciter arrangement is configured to convert electrical power fed thereto into mechanical power causing forced mechanical vibrations of the at least one measuring tube and the sensor arrangement is configured to detect mechanical vibrations of the at least one measuring tube and to provide a vibration measuring signal (s1) at least partially representing vibration motions of the at least one measuring tube and at least one vibration measuring signal (s2) at least partially representing vibration motions of the at least one measuring tube in such a manner that said vibration measuring signals follow a change in a mass flow rate of the medium guided in the measuring tube with a change in a phase difference, that is a change in a difference between a phase angle of vibration measuring signal (s1) and a phase angle of vibration measuring signal (s2). The sensor arrangement is furthermore also electrically coupled to the measurement and control electronics. The drive electronics for its part is electrically connected to the exciter arrangement and is configured, in a first operating mode (I), to generate an electrical driver signal (e1) and thereby to feed electrical power into the exciter arrangement in such a manner that the at least one measuring tube executes forced mechanical vibrations at at least one useful frequency, specifically a vibration frequency predefined by the electrical driver signal and, in a second operating mode (II), to suspend generation of the electrical driver signal in such a manner that no electrical power is fed into the exciter arrangement by the drive electronics during said suspension. Furthermore, in the Coriolis mass flowmeter according to the invention, the transformer circuit is configured to cause a changeover of the drive electronics from operating mode (I) into operating mode (II) in such a manner that the at least one measuring tube executes free damped vibrations at least for the duration of a measuring interval when the drive electronics are in operating mode (II) and the measurement and control electronics are configured to receive the vibration measuring signals during the measuring interval and to generate mass flow measured values representing the mass flow rate on the basis of the phase difference thereof.
A gas separator (100) for separating a multi-phase medium (3) comprising at least a gas, in particular in the form of gas bubbles (4), and a liquid (27), wherein the gas separator (100) has a tubular main body (6) with a longitudinal axis (L1), and has an inlet (1) for a gaseous medium, a liquid outlet (16) and a gas outlet (21), wherein the tubular main body (6) has an inlet region (40) and has an outlet region (50), characterized in that the gas separator (100) has, between the inlet region (40) and the outlet region (50), a weir (5) with a guide surface (11) which can be flowed over by the medium (3), with a shallow water region being formed, in such a way that the gas contained in the medium can emerge from the medium in the shallow water region and can be discharged from the gas separator (100) through the gas outlet, and a device for detecting a throughflow of at least one individual component of a multi-phase medium (3).
G01F 15/08 - Séparateurs d'air ou de gaz en combinaison avec des compteurs de liquides; Séparateurs de liquide en combinaison avec des compteurs de gaz
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
The electronic device comprises a microprocessor (µC) having a data input (IN), having a data output (OUT) and having a control input (CTL), as well as at least one memory unit (MEM) which is formed, in particular, by means of a persistent memory module. The microprocessor has at least two operating modes which can be selectively activated via the control input and is set up to execute at least one predefined sequential program in a first operating mode in order to process digital data arriving via the data input and/or in order to output digital data at the data output and is set up to be reprogrammable in a second operating mode such that at least one value of a parameter which influences the execution of the at least one sequential program by the microprocessor can be changed. The memory unit is also set up to react to each activation of the second operating mode with a change of memory contents, Z, such that said memory contents, Z, represent a frequency with which the second operating mode has been activated inside a predefined period of time.
G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
4.
MAGNETIC-INDUCTION FLOW METER, PARTICULARLY FOR HIGH PRESSURE APPLICATIONS
The invention relates to a magnetic-induction flow meter, particularly for high pressure applications with medium pressures above 5.1 MPa (51 bar), having a measuring tube (4) on which a multi-part electrode anchor (1) for securing a measuring electrode (7) is arranged, which comprises the following components: a) a coupling fitting (2), which is materially bonded to the measuring tube (4) and wherein the coupling fitting (2) comprises a groove, or forms a groove (29) together with the measuring tube (4), b) a coupling insert (3) for guiding and/or securing the measuring electrode (7), said coupling insert being connected to the coupling fitting (2) by way of a coupling, wherein said coupling insert (3) comprises anchoring wings (19) which engage in the groove (29) by a partial rotation and thereby effect the coupling. The invention further relates to an assembly procedure for an electrode anchor.
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 15/18 - Supports ou moyens de raccordement pour les compteurs
5.
METHOD AND MEASURING SYSTEM FOR ASCERTAINING DENSITY OF A FLUID
In the method of the invention, respectively the measuring system of the invention, a fluid contacted, vibratory body (10) is provided, which is caused to vibrate in such a manner that it at least partially executes mechanical oscillations with a resonant frequency (resonant oscillations) dependent on the density of the fluid contacting a first surface (10+) of the vibratory body, as well as also dependent on the temperature of the vibratory body. For producing at least one oscillation measurement signal, which has at least one signal component with a signal frequency corresponding to the resonant frequency and consequently dependent on the density of the fluid, vibrations of the vibratory body are registered by means of an oscillation sensor (51). Moreover, a temperature sensor (61) is applied thermally attached with a non fluid contacting, second surface (10#) of the vibratory body for producing a temperature measurement signal representing a time curve of a variable temperature of the vibratory body. As a function also of a thermal conductivity and a heat capacity of the vibratory body, the temperature measurement signal can follow, however time delayed, a change of the temperature of the vibratory body from a beginning temperature value, .THETA.10,t1, to a new temperature value, .THETA.10,t2. Based on the oscillation measurement signal as well as the temperature measurement signal, density, measured values are produced representing the density, wherein, during such, discrepancies possibly occurring between the time curve of the temperature of the vibratory body and the temperature measurement signal are taken into consideration, respectively at least partially compensated.
The measuring transducer comprises a transducer housing (71), of which an inlet-side housing end is formed by means of an inlet- side flow divider (201) having eight, mutually spaced flow openings (20 1A, 20 1B, 20 1C, 20 1D, 20 1E, 20 1F, 20 1G, 20 1H and an outlet-side housing end is formed by means of an outlet-side flow divider (20 2) having eight, mutually spaced flow openings (20 2A, 20 2B, 20 2C, 20 2D, 20 2E, 20 2F, 20 2G, 20 2H) as well as a tube arrangement with eight bent measuring tubes (18 1, 18 2, 18 3, 18 4, 18 5, 18 6, 18 7, 18 8) for the conveying flowing medium, which, forming flow paths connected for parallel flow, are connected to the flow dividers (20 1, 20 2), wherein each of the eight measuring tubes in each case opens with an inlet-side measuring tube end into one of the flow openings of the flow divider (20 1), and in each case opens with an outlet-side measuring tube end into one of the flow openings of the flow divider (20 2). An electro- mechanical exciter mechanism (5) of the measuring transducer serves for producing and/or maintaining mechanical oscillations of the measuring tubes (18 1, 18 2, 18 3, 18 4, 18 5, 18 6, 18 7, 18 8).
The invention relates to a measurement system that can be used for measuring a density and/or a mass flow rate of a medium which flows, at least intermittently, in a pipeline. To this end, the measurement system comprises a measurement sensor of the vibrational type for producing oscillation measurement signals, and an electronic converter that is electrically coupled to the measurement sensor so as to control said measurement sensor and evaluate the oscillation measurement signals supplied by the measurement sensor. The sensor has a sensor-housing (71) from which an inlet-side first housing end is formed by means of an inlet-side first flow splitter (201) that has exactly four flow openings (201A, 201B, 201C, 201D) spaced apart from one another respectively, and from which housing an outlet-side second housing end is formed by means of an outlet-side second flow splitter (202) that has exactly four flow openings (202A, 202B, 202C, 202D) spaced apart from one another respectively. The measurement sensor also has a pipe arrangement comprising precisely four straight measurement pipes (181, 182, 183, 184) connected to the flow splitter (201, 202) forming flow paths in parallel flow connection, for conducting a flowing medium, an electro-mechanical exciter arrangement (5) for generating and/or maintaining mechanical oscillations of the four measurement pipes (181, 182, 183, 184), as well as a vibration sensor arrangement (19) which reacts to vibrations of the measurement pipes (181, 182, 183, 184) to produce oscillation measurement signals representing vibrations of the measurement pipes (181, 182, 183, 184). Each of the four measurement pipes has a central segment which makes up at least 40% of each measurement pipe length respectively, in which segment each measurement pipe has no mechanical connection to any of the other measurement pipes and/or in which each measurement pipe can be moved freely relative to the other measurement pipes. In addition, a natural flexional oscillation mode intrinsic to the pipe arrangement and referred to as V-Mode acts as a mode of use actively excited by means of the exciter arrangement.
The invention relates to a method for detecting a complete or partial stoppage of a measurement tube (A; B) of a Coriolis flow meter (2) that can be inserted in a pipeline and comprises a measurement transducer of the vibratory type, having at least two measurement tubes (A, B) fluidically connected in parallel. The method thereby comprises the steps of measuring a partial flow occurring in a partial quantity of the measurement tubes (A, B) and comparing a partial flow value obtained from said measurement to a reference value expected for said partial quantity. The reference value is thereby determined from a total mass flow rate determined in the course of a Coriolis mass flow rate measurement. The method further comprises the step of detecting a stoppage of at least one measurement tube (A; B) of the measurement transducer if the partial flow rate value deviates from the reference value by more than a threshold value.
A measuring system is provided. The measuring system includes a measuring transducer which includes: a transducer housing with an inlet-side flow divider having exactly four, mutually spaced flow openings and an outlet-side housing end having exactly four, mutually spaced flow openings; four measuring tubes connected to the flow dividers for guiding flowing medium along flow paths connected in parallel; an electromechanical, exciter mechanism for producing and/or maintaining mechanical oscillations of the four measuring tubes; as well as a vibration sensor arrangement reacting to vibrations of the measuring tubes for producing oscillation measurement signals representing vibrations of the measuring tubes. Transmitter electronics includes a driver circuit for the exciter mechanism, and a measuring circuit. The measuring circuit of the measuring system corrects a change of at least one characteristic variable of the oscillation measurement signals delivered from the measuring transducer.
The measuring system comprises: A measuring transducer of vibration type, through which fluid flows during operation, and which produces oscillation signals corresponding to parameters of the flowing fluid; as well as a transmitter electronics (TE), which is electrically coupled with the measuring transducer, and serves for activating the measuring transducer and for evaluating oscillation signals delivered by the measuring transducer. The measuring transducer (MT) includes: At least one measuring tube (10; 10') for conveying flowing fluid; at least one electro-mechanical oscillation exciter (41) for actively exciting and/or maintaining bending oscillations of the at least one measuring tube in a wanted mode; and at least a first oscillation sensor (51) for registering vibrations of the at least one measuring tube, and for producing an oscillation signal (s1) of the measuring transducer, representing vibrations at least of the at least one measuring tube. The transmitter electronics (TE), in turn, generates, by means of a signal component of the oscillation signal, which represents a bending oscillation mode, in which the at least one vibrating measuring tube executes bending oscillations with at least one oscillatory antinode more than in the case of the bending oscillations in the wanted mode, a cavitation report (X KV), which signals an occurrence of cavitation in the fluid.
The measuring transducer comprises a transducer housing, of which an inlet-side, housing end and an outlet-side, housing end is each formed by a flow divider including four flow openings spaced from one another. A tube arrangement includes four curved measuring tubes connected to the flow dividers for guiding flowing medium along flow paths connected in parallel. Each measuring tube opens with an inlet-side, measuring tube end into one of the flow openings of the flow divider and with an outlet-side, measuring tube end into one the flow openings of the flow divider, and an electromechanical exciter mechanism serves for producing and/or maintaining mechanical oscillations of the measuring tubes. The transducer exhibits a first imaginary longitudinal-section plane, and a second imaginary longitudinal-section plane perpendicular thereto. The tube arrangement is mirror symmetric with respect to each of said longitudinal-section planes.
A measuring transducer comprises: a transducer housing, of which an inlet-side is formed by means of an inlet-side, flow divider having exactly four flow openings spaced from one another and an outlet-side formed by means of an outlet-side, flow divider having exactly four flow openings from one another; a tube arrangement having exactly four, curved, or bent, measuring tubes connected to the flow dividers for guiding flowing medium along flow paths connected in parallel. Each of the four measuring tubes opens with an inlet-side, measuring tube end into one of the flow openings of the flow divider and with an outlet-side, measuring tube end into one the flow openings of the flow divider. Two flow dividers are arranged in the measuring transducer. An electromechanical exciter mechanism is provided.
The measuring system comprises: A measuring transducer (MT) of vibration-type, through which medium flows during operation and which produces primary signals corresponding to parameters, especially a mass flow rate, a density and/or a viscosity, of the flowing medium; as well as a transmitter electronics (TE) electrically coupled with the measuring transducer for activating the measuring transducer and for evaluating primary signals delivered by the measuring transducer. The measuring transducer includes: At least one measuring tube (10; 10') for conveying flowing medium; at least one electro-mechanical, oscillation exciter for exciting and/or maintaining vibrations of the at least one measuring tube; a first oscillation sensor (51) for registering inlet-side vibrations at least of the at least one measuring tube and for producing a first primary signal (S1) of the measuring transducer representing vibrations at least of the at least one measuring tube, and a second oscillation sensor (52) for registering outlet-side vibrations at least of the at least one measuring tube and for producing a second primary signal (S2) of the measuring transducer representing vibrations at least of the at least one measuring tube. The transmitter electronics, in turn, delivers at least one driver signal (i exc) for the oscillation exciter for effecting vibrations of the at least one measuring tube and generates, by means of the first primary signal and by means of the second primary signal, as well as with application of a Reynolds number, measured value representing a Reynolds number, Re, for medium flowing in the measuring transducer, a pressure difference, measured value (X .DELTA.p), which represents a pressure difference occurring between two predetermined reference points in the flowing medium. 51
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
14.
MEASURING SYSTEM HAVING A MEASURING TRANSDUCER OF VIBRATION-TYPE
The measuring system comprises: A measuring transducer of vibration-type, through which medium flows during operation and which produces primary signals corresponding to parameters of the flowing medium; as well as a transmitter electronics electrically coupled with the measuring transducer for activating the measuring transducer and for evaluating primary signals delivered by the measuring transducer. The measuring transducer includes: At least one measuring tube for conveying flowing medium; at least one electro-mechanical, oscillation exciter for exciting and/or maintaining vibrations of the at least one measuring tube; and a first oscillation sensor for registering vibrations of the at least one measuring tube and for producing a first primary signal of the measuring transducer representing vibrations at least of the at least one measuring tube. The transmitter electronics, in turn, delivers at least one driver signal for the exciter mechanism for effecting vibrations of the at least one measuring tube and generates, by means of the first primary signal and/or by means of the driver signal, as well as with application of a pressure, measured value (X p1), which represents a first pressure, p Ref, reigning in the flowing medium, a pressure, measured value (X p2), which, in turn, represents a static second pressure, p crit, reigning in the flowing medium.. 52
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
15.
MEASURING SYSTEM HAVING A MEASURING TRANSDUCER OF VIBRATION-TYPE
The measuring system comprises: A measuring transducer of vibration-type, through which medium flows during operation and which produces primary signals corresponding to parameters of the flowing medium; as well as a transmitter electronics electrically coupled with the measuring transducer for activating the measuring transducer and for evaluating primary signals delivered by the measuring transducer. The measuring transducer includes: At least one measuring tube for conveying flowing medium; at least one electro-mechanical, oscillation exciter for exciting and/or maintaining vibrations of the at least one measuring tube; as well as at least a first oscillation sensor for registering vibrations at least of the at least one measuring tube and for producing a first primary signal of the measuring transducer representing vibrations at least of the at least one measuring tube. The transmitter electronics, in turn, delivers at least one driver signal for the exciter mechanism for effecting vibrations of the at least one measuring tube and generates, by means of the first primary signal, as well as with application of a damping, measured value, which represents an excitation power required for maintaining vibrations of the at least one measuring tube, and, respectively, a damping of vibrations of the at least one measuring tube as a result of inner friction in the medium flowing in the measuring transducer, a pressure difference, measured value, which represents a pressure difference occurring between two predetermined reference points in the flowing medium.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
G01N 9/00 - Recherche du poids spécifique ou de la densité des matériaux; Analyse des matériaux en déterminant le poids spécifique ou la densité
G01N 11/16 - Recherche des propriétés d'écoulement des matériaux, p.ex. la viscosité, la plasticité; Analyse des matériaux en déterminant les propriétés d'écoulement en déplaçant un corps à l'intérieur du matériau en mesurant l'effet d'amortissement sur un corps oscillant
16.
MEASURING TRANSDUCER OF VIBRATION-TYPE, AS WELL AS AN IN-LINE MEASURING DEVICE HAVING SUCH A MEASURING TRANSDUCER
A measuring transducer comprises a housing, of which an inlet-side housing end is formed by a first flow divider and an outlet-side housing end is formed by a second flow divider. Each flow divider has exactly four interspaced flow openings. The transducer also includes exactly four straight measuring tubes connected to respective inlet-side and outlet-side flow openings. An electromechanical exciter mechanism is provided for producing and/or maintaining mechanical vibrations of the four measuring tubes, and a sensor arrangement reacts to the vibrations. The sensor arrangement includes an inlet-side, first oscillation sensor and an outlet-side, second oscillation sensor. Plate-shaped stiffening elements are placed between the flow dividers and the oscillation sensors for tuning resonance frequencies of bending oscillations of the first and third measuring tubes and the second and fourth measuring tubes.
A measuring system comprises: a measuring transducer, through which medium flows, for producing oscillatory signals dependent on a viscosity of the flowing medium and/or a Reynolds number of the flowing medium; transmitter electronics for driving the measuring transducer and for evaluating oscillatory signals delivered by the measuring transducer. The measuring transducer includes: an inlet-side flow divider; an outlet-side flow divider; at least two, mutually parallel, straight, measuring tubes, connected to the flow dividers; and an electromechanical exciter mechanism for exciting and maintaining mechanical oscillations of the measuring tubes. Each of the at least two measuring tubes opens with an inlet-side measuring tube end into a flow opening and with an outlet-side. The transmitter electronics feeds electrical excitation power into the exciter mechanism while the exciter mechanism converts electrical excitation power at least partially into opposite-equal torsional oscillations of the at least two measuring tubes.
A magnet assembly includes: a magnetic field delivering, especially rod-shaped, permanent magnet; a retaining assembly fixedly connected with the permanent magnet and having a retaining head facing the permanent magnet and serving for holding the permanent magnet, and a retaining bolt affixed to the retaining head; and a magnet cup having a cup floor and a cup wall extending from the cup floor. The retaining head of the retaining assembly is at least partially accommodated in a passageway provided in the cup floor, so that an outer contact surface of the retaining head and an inner contact surface of the passageway contact one another to form a force-based interlocking between magnet cup and retaining assembly. The magnet assembly is, especially, provided for application as an oscillation transducer and/or for use in a measuring transducer of vibration type.
The measuring system serves for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible. The measuring system includes therefor: At least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, ~, of medium flowing past, and delivering at least one temperature measurement signal influenced by the local temperature of the medium to be measured; at least one pressure sensor placed at a pressure measuring point, reacting primarily to a local, especially a static, pressure, p, of medium flowing past, and delivering at least one pressure measurement signal influenced by the local pressure, p, in the medium to be measured; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor. The measuring electronics ascertains, with application both of the temperature measurement signal as well as also at least the pressure measurement signal, a provisional density measured value, which represents a density, which the flowing medium only apparently has at a virtual density measuring point, especially a virtual density measuring point predeterminably spaced from the pressure measuring point and/or the temperature measuring point along the flow axis. Additionally, the measuring electronics produces, with application of the provisional density measured value as well as at least density correction value determined at run-time and dependent both on a flow velocity of the medium as well as also on the local temperature reigning at the temperature measuring point, at least at times, at least one density measured value, especially a digital density measured value, differing from the provisional density measured value and instantaneously more accurately representing than the provisional density measured value a local density, .rho., which the flowing medium actually has at the virtual density measuring point.
G01N 9/26 - Recherche du poids spécifique ou de la densité des matériaux; Analyse des matériaux en déterminant le poids spécifique ou la densité en mesurant des différences de pression
G01F 1/34 - 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
G01N 9/32 - Recherche du poids spécifique ou de la densité des matériaux; Analyse 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
20.
MEASURING SYSTEM FOR A MEDIUM FLOWING IN A PROCESS LINE
The invention relates to a measuring system for measuring a density of a medium flowing in a process line, said medium being variable regarding its thermodynamic state, especially at least being compressible, along an imaginary axis of flow of the measuring system. The measuring system comprises at least one temperature sensor that is located in a temperature measuring point and that primarily reacts to a local temperature, 9, of a medium flowing past, said temperature sensor supplying at least one temperature measurement signal that is influenced by the local temperature of the medium to be measured, at least one pressure sensor that is located in a pressure measuring point and that primarily reacts to a local, especially static, pressure, p, of a medium flowing past, said pressure sensor supplying at least one pressure measurement signal that is influenced by the local pressure, p, in the medium to be measured, and at least one electronic measuring unit that at least temporarily communicates with at least the temperature sensor and the pressure sensor. The electronic measuring unit generates at least temporarily an especially digital, density value, using the temperature measurement signal and at least the pressure measurement signal, said density value momentarily representing a local density, p, which the flowing medium has in an especially stationary, virtual density measuring point that is interspaced from the pressure measuring point and/or the temperature measuring point along the axis of flow at a defined distance.
The invention relates to a measuring system for measuring the density of a flowing, compressible medium. The measuring system comprises a temperature sensor and a pressure sensor for measuring the local temperature and the local pressure, respectively, of the medium. An electronic measuring unit calculates the density of the medium based on the measured values of temperature, pressure, and a compensation factor (K). Said compensation factor (K) levels out a local variability of the temperature, the pressure or the Reynolds number of the flowing medium and can be determined using the specific thermal capacity of the medium.
The field-device electronics includes an electric current adjuster, through which a supply current flows, driven by a supply voltage provided by the external energy supply and adjusted by the current adjuster. Additionally, the field-device electronics includes an internal operating and evaluating circuit for controlling the field device, as well as an internal supply circuit feeding the internal operating and evaluating circuit. Provided in the supply circuit is a first useful-voltage controller flowed-through by a first component of the supply current, and a second useful-voltage controller flowed through, at least at times, by a second current component of the supply current, and providing in the field-device electronics a second internal, useful voltage. Further, the two useful-voltage controllers are galvanically separated from one another.
G05F 1/00 - Systèmes automatiques dans lesquels les écarts d'une grandeur électrique par rapport à une ou plusieurs valeurs prédéterminées sont détectés à la sortie et réintroduits dans un dispositif intérieur au système pour ramener la grandeur détectée à sa va
23.
IN-LINE MEASURING DEVICES AND METHOD FOR COMPENSATING MEASUREMENT ERRORS IN IN-LINE MEASURING DEVICES
The measuring device comprises, for measuring multi phase mixture, a vibratory- type transducer and a measuring device electronics electrically coupled with the vibratory- type transducer. The transducer includes at least one measuring tube inserted into the course of the pipeline. An exciter arrangement acts on the measuring tube for causing the at least one measuring tube to vibrate . A sensor arrangement senses vibrations of the at least one measuring tube and delivers at least one oscillation measurement signal representing oscillations of the measuring tube. Further, the measuring device electronics delivers an excitation current driving the exciter arrangement. The measuring device is adapted to compensating measurement errors, induced due to the presence of multi phase mixture, based on a moving resonator model (MRM) .
For measuring the medium flows through at least one inline measuring device measuring tube joined into the course of a pipeline. Using an inline measuring device sensor arrangement arranged on the measuring tube and reacting to changes of the at least one parameter of the medium, at least one measurement signal, influenced by at least one physical parameter of the medium in the measuring tube, is produced. Additionally, pressures effective in the medium are registered, to determine a pressure difference existing in the flowing medium. Based on the pressure difference currently determined and a transfer function, measured values representing the at least one parameter are produced, where the transfer function determines how the measured values of the first kind are generated under application of the pressure difference currently determined. Based on the measurement signal of the sensor arrangement, the transfer function is adapted to the medium to be measured.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
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 15/02 - Compensation ou correction des variations de pression, de poids spécifique ou de température
G01N 9/00 - Recherche du poids spécifique ou de la densité des matériaux; Analyse des matériaux en déterminant le poids spécifique ou la densité
G01N 11/08 - Recherche des propriétés d'écoulement des matériaux, p.ex. la viscosité, la plasticité; Analyse 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 en mesurant la pression nécessaire à la production d'un écoulement connu
25.
APPARATUS FOR CONTROLLING TEMPERATURE OF AN INLINE MEASURING DEVICE
The apparatus includes at least one heat exchanger (30) secured on the inline measuring device. Temperature-control fluid flows through the heat exchanger (30), at least at times during operation, for the purpose of transporting heat. The apparatus additionally includes securement means (50, 60) for the, especially releasable, fixing of the heat exchanger (30) externally on the inline measuring device (1). The heat exchanger (30) has an inner wall (32), especially a trough- or dish-shaped inner wall, contacting the inline measuring device (1) externally at least partially flushly, as well as an outer wall (31) fixed to the inner wall (32). The outer wall (31) is connected with the inner wall (32) via a connecting seam (90) running along an edge region and sealing against escape of the temperature-control fluid, and via a plurality of, especially point, or ring, shaped, inner connection locations (80), which are arranged spaced from one another in an inner region at least partially enclosed by the edge connection seam (90). Between the inner wall (32) and the outer wall (31) is at least one chamber (H) having a plurality of sections communicating with one another and serving to convey the temperature-control fluid. The chamber (H) is connected into a piping system conveying the temperature-control fluid via openings (33A, 34A) opening into the chamber.
G01F 1/84 - Débitmètres massiques du type Coriolis ou gyroscopique
F28D 1/06 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec canalisations d'échange de chaleur faisant partie du réservoir contenant la masse du fluide ou lui étant fixées
F28F 3/12 - Eléments construits sous forme d'un panneau creux, p.ex. comportant des canaux
G01F 15/02 - Compensation ou correction des variations de pression, de poids spécifique ou de température
brevets
