The invention relates to a device (1) for determining a measured variable. The problem addressed by the invention is that of providing a device for determining a measured variable which enables the simplest possible adaptation to the measurement conditions. This problem is solved in that the device (1) has a sensor unit (2) and a transmitter (3). In accordance with the measured variable the sensor unit (2) generates an electrical primary signal which the sensor unit (2) passes on via an analogue output interface (4) to the transmitter (3) and which the transmitter (3) processes. The invention further relates to a sensor unit (2) and to a transmitter (3). The sensor unit (2) preferably enables offline calibration under constant environmental conditions.
A method for the separating electrically-charged particles moving along a path (2) as a function of the kinetic energy thereof is described and disclosed. The problem addressed by the invention is to propose a method for energy separation which has improved features over the prior art. The problem is solved by a method which is characterized in particular by the fact that an energy threshold (3) is generated along the path (2) and in that an electric field is generated running parallel to the path (2) by an electric potential difference. The invention further relates to an energy filter (1). Drawing_references_to_be_translated:
The description and illustration relate to a field device (1). The invention is based on the object of simplifying the data communication with field devices. The object is achieved by virtue of a cloud interface (2) being provided, via which data communication between the field device (1) and a cloud (3) takes place. In addition, the invention relates to a method for operating a field device (1) and to a cloud service.
The invention relates to a method for the secure access of a mobile operating unit (1) to a field device (2). The aim of the invention is to provide a method for the secure access of a mobile operating unit to a field device, wherein the field device is protected from an unauthorized access via a mobile operating unit in particular. This is achieved by the aforementioned method in that a connection for transmitting data is established between the mobile operating unit (1) and the field device (2); access data for an access process is transmitted; a comparison is carried out between the access data and stored comparison data, and a comparison result is generated; and the access of the mobile operating unit (1) to the field device (1) is allowed on the basis of the comparison result.
The invention relates to a method for determining a velocity of a flowing medium. The problem addressed by the invention is that of providing a method for determining the velocity of a flowing medium, which allows an as accurate measuring as possible without requiring a complex measurement structure. The problem is solved by said method such that a turbulence is generated in the medium, and an electromagnetic signal is beamed into the medium. Subsequently, a measure for a permittivity of the medium is determined from the received electromagnetic signal, and therefrom, the velocity of the medium is determined. The invention further relates to a device (1) for determining the velocity of a medium.
G01P 5/22 - Mesure de la vitesse des fluides, p.ex. d'un courant atmosphérique; Mesure de la vitesse de corps, p.ex. navires, aéronefs, par rapport à des fluides en mesurant le temps mis par le fluide à parcourir une distance déterminée en utilisant des moyens de détection à autocorrélation ou à intercorrélation
G01P 5/14 - Mesure de la vitesse des fluides, p.ex. d'un courant atmosphérique; Mesure de la vitesse de corps, p.ex. navires, aéronefs, par rapport à des fluides en mesurant les différences de pression dans le 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
6.
METHOD FOR OPERATING A MAGNETIC-INDUCTIVE FLOWMETER
The invention describes a method for operating a magnetic-inductive flowmeter with a magnetic field generation device for generating a magnetic field which permeates a flowing medium and with a measuring device for determining measured values which represent the field strength of the electrical field induced in the flowing medium by the magnetic field, wherein the magnetic field generation device comprises at least one electromagnet and a magnetic field conductor which is at least partially penetrated by the magnetic field, and the permeability of the magnetic field conductor is a non-linear function of the magnetic field strength. The invention specifies a method of the type described above in which the presence of a parasitic magnetic field is detected, specifically by virtue of the fact that the electromagnet is energized at least with a first current value and a second current value, the measuring device determines a first measured value when the electromagnet is energized with the first current value and determines a second measured value when the electromagnet is energized with the second current value, a first measured value pair is formed from the first current value and the first measured value and a second measured value pair is formed from the second current value and the second measured value, the correspondence of the measured value pairs and of the function of the permeability is determined, and the non-correspondence of the measured value pairs and of the function of the permeability is signalled, wherein the non-correspondence is at least partially caused by the presence of a parasitic magnetic field in the magnetic field conductor.
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
7.
MAGNETIC INDUCTIVE FLOW METER AND METHOD FOR OPERATING A MAGNETIC INDUCTIVE FLOW METER
The invention relates to a magnetic field generating device (1) associated with a magnetic inductive flow meter for generating an alternating magnetic field that extends at least also perpendicular to the longitudinal axis of a measuring tube (not illustrated). In the illustrated embodiment, the magnetic field generating device (1) comprises at least one field coil (2), a current regulator (3), a switching bridge (4), and a microcontroller (5). According to the invention, two different coil voltages are provided for the coil current supply, namely, an initial voltage and a lower operating voltage, and a voltage selector switch (6) for switching from the initial voltage to the operating voltage - and vice versa - is provided.
A measuring device (1) for determining a measurement variable is described and illustrated. Provision is made of a sensor apparatus (2) which generates a primary signal on the basis of the measurement variable, an electronic apparatus (3), a transition section (4) between the sensor apparatus (2) and the electronic apparatus (3), an interface (5) which is arranged in the transition section (4) and is intended to transmit energy and/or signals, and a signal line (7) between the sensor apparatus (2) and the electronic apparatus. The invention is based on the problem of proposing a measuring device having an interface for transmitting signals and/or energy, which interface is easier to reach than the interface of the measuring devices in the prior art. In the measuring device in question, the problem is solved by virtue of the fact that the interface (5) and the signal line (7) can be reversibly connected to one another in order to transmit signals.
The invention relates to a measuring device (1) for determining a measured variable, comprising a sensor device (2), an analyzing device (3), and an interface (4). The sensor device (2) generates measurement information dependent on the measured variable, and the analyzing device (3) ascertains a result value for the measured variable. The aim of the invention is to provide a measuring device which makes do with a limited power and memory requirement and which additionally allows a complex analysis for obtaining the result value for the measured variable. This is achieved by the aforementioned measuring device in that the analyzing device (3) outputs the measurement information or information dependent thereon via the interface (4), receives intermediate information generated dependent on the measurement information or on the information dependent thereon, and ascertains the result value dependent on the intermediate information. The invention further relates to a measuring arrangement and to a method for determining a measured variable.
G01D 3/036 - Dispositions pour la mesure prévues pour les objets particuliers indiqués dans les sous-groupes du présent groupe pour atténuer les influences indésirables, p.ex. température, pression sur les dispositions de mesure elles-mêmes
G01F 1/22 - 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 par débitmètres à section variable
The invention describes and illustrates a vortex flow measuring device (1) comprising a measuring pipe (2) through which a medium flows, a baffle element (3) for generating vortices in the medium and a deflection element (4), which can be deflected by the pressure fluctuations associated with the vortices in the medium. The device also comprises an electronic unit (6) which applies electromagnetic radiation to the deflection element (4) and receives electromagnetic radiation from the deflection element (4).
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
11.
METHOD FOR OPERATING A RESONANT MEASUREMENT SYSTEM, AND ASSOCIATED RESONANT MEASUREMENT SYSTEM
Disclosed is a method for operating a resonant measurement system (1), in particular a Coriolis mass flow meter. Said resonant measurement system (1) comprises at least one adjustment device (2), at least one electric actuation device (3), at least one electromagnetic drive (4) as a vibration generator, at least one vibrating element (5), and at least one vibration recorder (6). The adjustment device (2) generates an adjustment device output signal (u1) to trigger the electric actuation device (3), the electric actuation device (3) provides an electric excitation signal (u2) to excite the electromagnetic drive (4), the electromagnetic drive (4) excites the vibrating element (5) to make the same vibrate in at least one normal mode, and the excited vibration of the vibrating element (5) is sensed by the vibration recorder (6) and is output as at least one output signal (y). In order to be able to quickly and reliably approach, maintain and readjust a resonant point as an operating point of the resonant measurement system, the phase difference (Δφ(y, u1)) between the output signal (y) of the vibration recorder (6) and the adjustment device output signal (u1) is acquired, an adjustment deviation (e) is calculated from a predefined phase difference (ΔφS1) and said acquired phase difference (Δφ(y, u1)), and the adjustment deviation (e) is made available to the adjustment device (2) as an input signal.
Disclosed is a method for operating a resonant measurement system (1), in particular a Coriolis mass flow meter. Said resonant measurement system (1) comprises at least one electric actuation device (3), at least one electromagnetic drive (4) as a vibration generator, and at least one vibrating element (5) interacting with a medium. The electric actuation device (3) provides an electric excitation signal (u2) to excite the electromagnetic drive (4), and the electromagnetic drive (4) excites the vibrating element (5) to make the same vibrate in at least one normal mode. In order to excite the resonant measurement system (1) in the linear operating range, the driving terminal current iDrA triggered by the electric excitation signal u2 and the driving terminal voltage uDrA of the electromagnetic drive (4) triggered by the electric excitation signal u2 are acquired in a measuring process, the driving power SDrA is determined from the driving terminal current iDrA and the driving terminal voltage uDrA, and if the driving terminal current iDrA exceeds a given maximum driving terminal current iDrA-max, and/or if the driving terminal voltage uDrA exceeds a given maximum driving terminal voltage uDrA-max, and/or if the driving power SDrA exceeds a given maximum driving power SDrA-max, the electric excitation signal u2 is limited to a threshold value u2-B in such a way that the driving terminal current iDrA remains below the given maximum driving terminal current iDrA-max, and/or the driving terminal voltage uDrA remains below the given maximum driving terminal voltage uDrA-max, and/or the driving power SDrA remains below the maximum driving power SDrA-max.
The invention relates to a measuring device housing (1) having a viewing opening (3), a viewing pane holder (4) provided around the viewing opening (3), a viewing pane (5) which can be inserted into the viewing pane holder (4), a gasket (6) for sealing by means of sealing compound between the viewing pane (5) inserted in the viewing pane holder (4) and the viewing pane holder (4) itself, a gasket holder (7) provided around the viewing opening (3) in the viewing pane holder (4) to hold the gasket (6) and a circumferential sealing gap (8) provided between the viewing pane (5) and the viewing pane holder (4). A measuring device housing (1) with improved sealing of the sealing gap (8) is produced in that the gasket (6) and the viewing pane holder (4) form a sealing compound container (9) extending around the viewing opening (3) to hold liquid sealing compound (10) when the measuring device housing (1) is oriented properly, in that the sealing compound container (9) without the inserted viewing pane (5) has a first container volume, that the sealing compound (9) with the inserted viewing pane (5) has a second container volume, in that the first container volume is greater by a differential volume than the second container volume, and in that when the viewing pane (5) is inserted, the differential volume flows over into the sealing gap (8).
The invention relates to a method for operating a Coriolis mass flow measuring device (1), wherein said Coriolis mass flow measuring device (1) comprises at least one measuring pipe through which a medium flows, at least one vibration generator (2a, 2b), at least a first vibration sensor (3a), at least a second vibration sensor (3b) and at least a control and analyzing unit (4). Excitation signals (UDae, UDbe) can be guided from the control and analyzing unit (4) to the vibration generator (2a, 2b) via at least one excitation channel (Cha1, Cha2), wherein a first interested primary measurement signal (Va) can be guided from the first vibration generator (3a) to the control and analyzing unit (4) via at least a first measurement channel (Ch1) and a second interested primary measurement signal (Vb) can be guided from the second vibration generator (3b) to the control and analyzing unit (4) via at least a second measurement channel (Ch2). The detection of the relevant measurement variables or diagnosis parameters is achieved with increased accuracy and security in that the control and analyzing unit (4) calculates, at least indirectly and in a ratiometric manner, at least a derived secondary variable (m), based on the primary measurement signals (Vag, Vbg) transmitted via the measurement channels (Ch1, Ch2, Chn), wherein the interested primary measurement signals (Va, Vb') are guided alternately to the control and analyzing unit (4) via the different measurement channels (Ch1, Ch2, Chn) and wherein, based on the various values (Vag1, Vag2, Vagn; Vbg1, Vbg2, Vbgn) obtained from the different measurement channels (Ch1, Ch2, Chn) regarding the transmitted primary measurement signals (Vag, Vbg), compensation values (Vam, Vbm) of the transmitted primary measurement signals are calculated and said compensation values (Vam, Vbm) are used as a basis for the calculation of the derived secondary variable (m).
The invention relates to a method for operating a resonance measuring system (1), in particular in the form of a Coriolis mass flow measuring device or in the form of a density measuring device, said resonance measuring system (1) having at least one measuring pipe (3) through which a medium (2) flows, at least one vibration generator (4), at least one vibration sensor (5a, 5b), and at least one control and analyzing unit (6). The measuring pipe (3) is excited into a vibration at a specified excitation frequency and a first amplitude by the vibration generator (4), and the resulting vibration of the measuring pipe (3) is detected via the at least one vibration sensor (5a, 5b). A multiphase flow is detected in a simple and reliable manner in that the control and analyzing unit (6) ascertains at least one first measured value (Xi) for at least one state variable (x) on the basis of the detected resulting vibration, said state variable being dependent on the amplitude when the medium (2) consists of multiple phases; the measuring pipe (3) is excited into a vibration at the excitation frequency and a second amplitude that is different from the first amplitude by the vibration generator (4); the resulting vibration of the measuring pipe (3) is detected; the control and analyzing unit (6) ascertains at least one second measured value (xj) for the state variable (x) on the basis of the detected resulting vibration, said state variable being dependent on the amplitude when the medium (2) consists of multiple phases; and the measured value deviation (Δxij) of at least one of the first measured values (Xi) from at least one of the corresponding second measured values (xj) is used as an indicator for the presence of a multiphase flow.
Described and depicted is an explosion-proof apparatus (1) comprising a pressure-resistant capsule (2), an electronic device (3), and a signal reception device (4), the electronic device (3) being designed to be intrinsically safe, the pressure-resistant capsule (2) having a radiation-permeable process window (5), and the signal reception device (4) being arranged inside the pressure-resistant capsule (2). In order to design an inexpensive explosion-proof apparatus (1) that can be used in a flexible manner, the electronic device (3) is arranged inside the pressure-resistant capsule (2), and the signal reception device (4) is designed to be intrinsically safe.
A circuit arrangement for production of radio-frequency output signals formed by a broadband frequency ramp is described and illustrated, having a reference oscillator (1), a phase detector (2), a loop filter (3), a VC oscillator (4) for production of the output signals, a frequency divider (5), a step-down mixer (7) and a local oscillator (8) for production of a local oscillator signal, wherein the reference oscillator (1), the phase detector (2), the loop filter (3), the VC oscillator (4), the frequency divider (5) and the step-down mixer (7) belong to a phase locked loop, the frequency divider (5) and the step-down mixer (7) are located in the feedback path of the phase locked loop, the step-down mixer (7) mixes the output signals and the local oscillator signal, and the frequency of the output signal can be adjusted by variation of the division ratio of the frequency divider (5). According to the invention, the characteristic of the output signal is improved with the aid of the adjustable frequency of the local oscillator signal.
H03L 7/185 - Synthèse de fréquence indirecte, c. à d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant un diviseur de fréquence ou un compteur dans la boucle une différence de temps étant utilisée pour verrouiller la boucle, le compteur entre des nombres fixes ou le diviseur de fréquence divisant par un nombre fixe utilisant un mélangeur dans la boucle
H03L 7/23 - Synthèse de fréquence indirecte, c. à d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant plus d'une boucle avec des compteurs d'impulsions ou des diviseurs de fréquence
brevets
