Abstract: A method for trimming a tube with at least one stiffening element placed on its tube wall to a target bending stiffness, wherein the tube has first an interim bending stiffness, which is greater than the target bending stiffness. For the purpose of reducing the interim bending stiffness of the tube to the target bending stiffness, it is provided in the method of the invention that volume of the stiffening element is removed, for instance, by means of a laser.

Abstract: The method serves for changing at least one eigenfrequency of a tube arrangement formed by means of at least one tube particularly, however, also for tuning the interim eigenfrequency to a desired eigenfrequency deviating therefrom and referred to as a target eigenfrequency. The tube has a tube wall, of metal and/or an at least sectionally circularly cylindrical, tube wall as well as a stiffening element of metal and/or a stiffening element of material connectable with the material of the tube by material bonding and/or a platelet shaped, stiffening element, placed on the tube wall and co-determining the interim eigenfrequency of the tube arrangement. For the purpose of changing the interim eigenfrequency, it is provided, that volume is removed from the stiffening element, for instance, by means of laser.

Abstract: A Coriolis mass flowmeter in which common or even great forces for oscillation excitation can be guaranteed, and at the same time, with which the risk of flashover is reduced in explosion-proof surroundings is implemented in that the actuator assembly (4) has at least a first conductor (11) with windings (12) and at least a second conductor (13) with windings (14), the windings of the conductors being arranged parallel to one another. Also, the first conductor (11) and the second conductor (13) are insulated from one another at least in the area of their windings (12, 14) and the first conductor (11) and the second conductor (13) are connected in such a manner that the first conductor (11) and the second conductor (13) can be supplied with a current in the same manner in the operating state so that a common magnetic field is created.

Abstract: 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.

Abstract: A Coriolis mass flow measuring device, comprising at least one measurement pipe, through which a medium flows and which is induced to vibrate by an exciter arrangement, wherein two optical vibration sensors, arranged before and after the exciter arrangement in the longitudinal direction of the at least one measurement pipe, provide vibration signals, based on which an activation and evaluation device determines the mass flow and/or the density of the medium. The optical vibration sensors each have a pair of superimposed grids having periodic structures to improve the resolution that can be achieved by the optical vibration sensors.

Abstract: The present invention relates to a vibrating flow device that includes at least one conduit, at least one drive, at least one pick-off, and at least one housing. The at least one drive vibrates the at least one conduit at one or more drive frequencies and the at least one pick-off measures the motion of the at least one conduit. The at least one housing encompasses at least a portion of the at least one conduit. The at least one housing's modes of vibration occur at frequencies that exceed the one or more drive frequencies.

Abstract: A measuring transducer comprises: a housing, with an inlet-side flow divider having four flow openings, and an outlet-side end having four flow openings; a tube arrangement having four tubes connected to the flow dividers; and a first coupling element. An exciter mechanism for producing and/or maintaining mechanical oscillations of the four measuring tubes. The first coupling element includes a deformation body and four connecting struts, of which connected with a first strut end and with the first measuring tube, a second connecting strut is connected with a first strut end and with a second strut end with the second measuring tube, a third connecting strut and with a second strut end with the first measuring tube, and a fourth connecting strut is connected with a first strut end and with a second strut end with the fourth measuring tube.

Abstract: 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.

Abstract: A flowmeter having an inlet through which the medium can flow into a measurement zone and having an outlet through which the medium can flow out, wherein a damping device is provided in front of the inlet, and has a first mass which can be flowed through having a first inlet and a first outlet for the medium, a second mass which can be flowed through having a second inlet and a second outlet for the medium as well as a flow connection which is capable of vibration and which connects the first outlet to the second inlet, wherein a minimal flow cross-section (d) of the flow connection is smaller than the inlet cross-section (E) at the first inlet or smaller than the outlet cross-section (A) at the second outlet.

Abstract: A blood flow calibration system 500 including a computer 400 operable to determine and store calibration data for a flow meter 124, a test system 530 operable to simulate blood flow for the flow meter 124, thereby allowing the computer 400 to determine the calibration data, and a programmer 300 operable to transfer the calibration data from the computer 400 to the flow meter 124. The flow meter 124 preferably includes a power management circuit 348a,b operable to detect whether the flow meter 124 is powered. In the event that the flow meter 124 is unpowered, the power management circuit 348a,b is preferably able to supply power to a portion of the flow meter 124 in order to transfer the calibration data thereto.

Abstract: A method and apparatus for operating a vibrating flow meter is provided. The method comprises the steps of receiving sensor signals from the vibrating flow meter and determining a current zero offset for the vibrating flow meter. The current zero offset can be determined based on the received sensor signals. The method also comprises the step of determining one or more current operating conditions. The one or more current operating conditions can be compared to one or more previous operating conditions of the offset correlation. The method also includes the step of generating an average zero offset if the offset correlation includes a previously determined zero offset corresponding to the current operating conditions. The average zero offset can be based on the current zero offset and the previously determined zero offset.

Abstract: A method for operating a vibrating flow meter system is provided. The method includes the step of receiving a first sensor signal from a first vibrating flow meter. A second sensor signal is received from a second vibrating flow meter. A first flow rate is generated from the first sensor signal and a second flow rate is generated from the second sensor signal. The method further includes the step of determining a differential zero offset of the first vibrating flow meter based on the first and second flow rates.

Abstract: A measuring system comprises: a measuring transducer for producing oscillation measurement signals; and transmitter electronics electrically coupled with the measuring transducer for activating the measuring transducer and for evaluating oscillation measurement signals delivered by the measuring transducer. The measuring transducer includes: a transducer housing, a first housing end housing end, first flow divider having exactly four flow openings, an outlet-side, second housing end formed by means of an outlet-side, second flow divider having exactly four flow openings mutually spaced from one another, and a tube arrangement having exactly four, straight, measuring tubes forming flow paths arranged for parallel flow and connected to the flow dividers, an electromechanical exciter mechanism for producing and/or maintaining mechanical oscillations of the four measuring tubes and a vibration sensor arrangement reacting to vibrations of the measuring tubes.

Abstract: A Coriolis mass flowmeter having at least four measuring tubes running parallel, the measuring tubes being joined in pairs into a oscillation unit by being inserted in openings in a holding device (1) and wherein at least part of either a sensor or actuator device is attached to the holding device (1). A Coriolis mass flowmeter that has an increased measuring accuracy is implemented in that the measuring tube central axes (3) of a measuring tube pair span a common plane (E), that the holding device (1) has at least two attachment extensions (4), that the attachment extensions (4) extend across the common plane (E) and that the holding devices (1) with the attachment extensions (4) are mirror symmetric relative to the common plane (E) in respect to their projection viewed in the direction of the measuring tube central axes (3).

Abstract: According to the present invention, a vibrating flow meter and method of operating a vibrating flow meter are provided. The vibrating flow meter includes a conduit (210), at least one pick-off (230, 231), a driven member (250), at least one driver (220), and a base (260). The conduit (210) defines a fluid flow path. The at least one pick-off (230, 231) measures the motion of the conduit (210). The at least one driver (220) vibrates the conduit (210) and the driven member (250) in phase opposition. The base (260) is coupled to the conduit (210) and the driven member (250) and switches between remaining substantially stationary or moving substantially in phase with the conduit (210) or moving substantially in phase with the driven member (250) in order to balance the motion of the conduit (210) and the driven member (250).

Abstract: A method for determining the viscosity of a medium with a Coriolis mass flowmeter, wherein the Coriolis mass flowmeter has at least two measuring tubes that medium can flow through and a measuring device, wherein the measuring device has at least two actuator assemblies, wherein a measuring tube plane is defined by the measuring tube central axis and wherein the actuator assemblies are arranged on both sides of the measuring tube plane and outside of the measuring tube plane. Elaborate constructional measures for the Coriolis mass flowmeter are avoided by the measuring tubes being excited with a measuring device to at least oppositely directed torsion oscillation (and optionally additionally to plane oscillation) with the actuator assemblies being alternately actuated with opposing effective directions so that at least the viscosity of the medium is determined by evaluation of values from the measuring device.

Abstract: A measuring transducer comprising at least one measuring tube for conveying a flowing medium. The measuring tube vibrates at least at times during operation. A sensor arrangement, which serves to register oscillations of the at least one measuring tube. The measuring tube extends with an oscillatory length between an inlet-side, first measuring tube end, and an outlet-side, second measuring tube end, and, during operation, oscillates about an oscillation axis, which is parallel to or coincides with an imagined connecting axis which imaginarily connects the two measuring tube ends.

Abstract: A method and apparatus for measuring and/or monitoring at least one flow parameter of a medium, which medium flows through a measuring tube, wherein the measuring tube is contacted by at least two transducer elements, by means of which the measuring tube is excitable to execute mechanical oscillations and by means of which mechanical oscillations of the measuring tube are receivable. Each of the at least two transducer elements is applied, offset in time, alternately, for exciting the measuring tube to execute mechanical oscillations and for receiving the mechanical oscillations of the measuring tube.

Abstract: A dual-driver vibratory flowmeter (100) is provided according to the invention. The dual-driver vibratory flowmeter (100) includes a first flowtube (102A) and a second flowtube (102B) positioned substantially adjacent to the first flowtube (102A). The first and second flowtubes (102A, 102B) include a longitudinal length L. The dual-driver vibratory flowmeter (100) further includes a first driver (121) comprising first and second driver portions (121A, 121B) and affixed to the first and second flowtubes (102A, 102B), with the first driver (121) being located at a third longitudinal location Y along the first and second flowtubes (102A, 102B) and a second driver (122) comprising first and second driver portions (122A, 122B) and affixed to the first and second flowtubes (102A, 102B), with the second driver (122) being located substantially at the third longitudinal location Y and substantially spaced-apart from the first driver (121).

Abstract: A measuring transducer comprises a measuring tube vibrating at least at times during operation, having a wall thickness (s) and at least one oscillation sensor, especially an electrodynamic oscillation sensor, for producing at least one primary signal of the measuring transducer representing vibrations of the measuring tube. In the measuring transducer at least one securement element, especially a metal securement element, fixedly encircling the measuring tube essentially along a circumferential line thereof and having a total width (B), for holding a component of the oscillation sensor, especially a magnet coil or a permanent magnet, on the measuring tube is provided. The securement element has an essentially rectangular outer perimeter with a projection protruding out therefrom by a height (h) and serving for holding the component of the oscillation sensor. The projection has a width (e), which is smaller than the total width (B) of the securement element.

Abstract: A method for operating a resonance-measuring system, in particular, a Coriolis mass flowmeter, having at least one oscillation element, at least one oscillation driver and at least one oscillation sensor, the oscillation element being excited to oscillation in at least one control using at least one control loop by at least one oscillation driver being excited by at least one excitation signal and the excited oscillations of the oscillation element being detected by the oscillation sensors as at least one response signal. At least one set variable of the closed loop is varied in a pre-determined manner and by evaluating at least one resulting excitation signal and/or at least one resulting response signal with the help of a mathematical model of the resonance-measuring system, at least one parameter of the excited eigenform is selectively identified.

Abstract: A Coriolis flow sensor with at least one vibrating flow tube through which a medium flows, includes elements for exciting the tube, and optical detection element for determining the movements of one or several points of the tube based on the principle of reflection of a light beam against the photosensitive surface of a light sensor. The light beam is directed at the tube wall, at a layer provided on this wall, or at an element fastened against this wall, wherein elements for shaping the beam are arranged for making the convergence of the beam in the direction of movement of the tube associated with the Coriolis forces smaller than the convergence in the direction of movement of the tube associated with the excitation forces. The sensitivity in the detection of the small movements of the tube caused by the Coriolis forces is enhanced.

Abstract: A flowmeter of Coriolis type includes a supporting base that supports a pair of fluid pipes in a manner capable of being vibrated, and a frame fixed to the supporting base. The frame is integrally formed with a mounting portion disposed between the fluid pipes and having a thickness that does not interfere with the fluid pipes, a reinforcing portion disposed at the outer circumference of the mounting portion and enhancing the rigidity of the mounting portion, and a fixing portion for being fixed to the supporting base. The reinforcing portion has an outer wall portion that protrudes at least to one side of the thickness direction of the mounting portion, and substantially continuously surrounds the outer circumference of the fluid pipes. Penetrating portions for disposing the coils corresponding to respective magnetic substances mounted on the fluid pipe are formed in the mounting portion.

Abstract: 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.

Abstract: A Coriolis mass flowmeter (1) with at least one sensor arrangement (2) and at least one housing (3), in which the sensor arrangement (2) includes at least one measuring tube (4), at least one oscillation generator (5) and at least one oscillation sensor (6), and the measuring tube (4) being excited by the oscillation generator (5) in at least one operating frequency. To optimize production costs and weight relative to the size of the measuring device is implemented by at least one reinforcement element (10) being arranged in and joined to the housing (3) in such a manner that the implemented eigenfrequencies of the housing (3) are shifted away from the operating frequency of the measuring tube (4).

Abstract: A measuring transducer includes: a transducer housing with an inlet-side flow divider having exactly four flow openings and an outlet-side flow divider having exactly four flow openings; as well as exactly four, straight, measuring tubes connected to the flow dividers. Each of the four measuring tubes opens into one the flow openings of the inlet-side flow divider and into one the flow openings of the outlet-side flow divide. Additionally, the measuring transducer includes an electromechanical exciter mechanism for producing and/or maintaining mechanical oscillations of the measuring tubes such that the measuring tubes are excitable pairwise to execute opposite phase bending oscillations in a shared imaginary plane of oscillation.

Abstract: A flow meter (20) including one or more flow tubes (103) and a driver (104A, 104B) adapted to vibrate the one or more flow tubes (103) at a drive frequency is provided. The flow meter (20) comprises a gusset (260). The gusset (260) is coupled to and extends along the flow tube (103) such that a frequency separation between the drive frequency and at least a second vibration frequency is increased.

Abstract: The viscometer provides a viscosity value (X?) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly, the flow tube is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics which feed an excitation current (iexc) into the excitation assembly. By means of the meter electronics, a first internal intermediate value (X1) is formed, which corresponds with the excitation current (iexc) and thus represents the friction forces acting in the fluid. According to the invention, a second internal intermediate value (X2), representing inhomogeneities in the fluid, is generated in the meter electronics, which then determine the viscosity value (X?) using the two intermediate values (X1, X2).

Abstract: A Coriolis mass flowmeter having two measuring tubes, wherein two neighboring oscillation node plates are provided on one end of the measuring tube that connect the two measuring tubes to one another and wherein the angle between the planes of both oscillation node plates is determined in such a manner that the vibration of the measuring tubes is minimal up to a predetermined driving force. A method of producing the flowmeter is also disclosed.

Abstract: There is provided a Coriolis mass flowmeter. The flowmeter is configured to vibrate a pipe line through which a fluid flows and measure a mass flow rate of the fluid flowing through the pipe line, based on a phase difference between an upstream vibration signal and a downstream vibration signal, wherein the upstream vibration signal is detected in an upstream side of the pipe line, and the downstream vibration signal is detected in a downstream side of the pipe line.

Abstract: Measuring transducer of vibration-type for a fluid flowing in a pipeline. The measuring transducer includes, in such case, a curved measuring tube for conveying the fluid, a counteroscillator having two counteroscillator arms, which are arranged on both sides of the measuring tube, and which, in each case, essentially follow the curve of the measuring tube, and which are coupled to one another in such a manner, that, during operation, they oscillate in phase with one another, and which are affixed to the measuring tube on the inlet side and outlet sides for forming corresponding coupling zones. The measuring transducer also includes an exciter mechanism, via which, during operation, the measuring tube and the counteroscillator are excitable to oscillations of opposite phase to one another.

Abstract: A subassembly of a Coriolis flowmeter is fabricated from a single monolithic piece of elastic polymeric material. The subassembly includes two flow-sensitive members and a base integrally connected to the two flow-sensitive members. The two flow-sensitive members include straight sections, and are substantially similar and parallel to each other. Flow passages are drilled along the straight sections of the two flow-sensitive members, and drilled entrances are sealed using the elastic polymeric material. A temperature sensor is fixedly attached to a flow-sensitive member for measuring a temperature of the flow-sensitive member and communicating the temperature to a metering electronics. The metering electronics determines a calibrated flow rate of fluid flowing through the Coriolis flowmeter that accounts for the temperature.

Abstract: A method for determining at least one characteristic of a multiphase fluid including the steps of applying alternating energy of a predetermined amplitude to a portion of a multiphase fluid and measuring the electrical impedance spectrum across the portion of multiphase fluid whereby a characteristic of the multiphase fluid can be determined from the measured electrical impedance spectrum.

Abstract: The measuring transducer comprises: a transducer housing, of which an inlet-side, housing end is formed by means of a flow divider including four flow openings spaced, and an outlet-side, formed by means of a flow divider including four flow openings spaced, from one another. A tube arrangement including four curved measuring tubes connected to the flow dividers for guiding flowing medium along flow paths connected in parallel. Each 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. The two flow dividers are embodied and arranged in the measuring transducer, so that the tube arrangement extends both between a first and a second of the measuring tubes and between a third and a fourth of the measuring tubes.

Abstract: The measuring transducer serves for registering at least one physical, measured variable of a flowable medium guided in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium guided in a pipeline. For such purpose, 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 exactly four flow openings (201A, 201B, 201C, 201D) spaced, in each case, from one another and an outlet-side, housing end is formed by means of an outlet-side, flow divider (202) having exactly four flow openings (202A, 202B, 202C, 202D) spaced, in each case, from one another; as well as exactly four, straight, measuring tubes (181, 182, 183, 184) connected to the flow dividers (201, 202) for guiding flowing medium along flow paths connected in parallel.

Abstract: The measuring transducer serves for registering at least one physical, measured variable of a flowable medium guided in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium guided in a pipeline. For such purpose, 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 exactly four flow openings (201A, 201B, 201C, 201D) spaced, in each case, from one another and an outlet-side, housing end is formed by means of an outlet-side, flow divider (202) having exactly four flow openings (202A, 202B, 202C, 202D) spaced, in each case, from one another; as well as exactly four, straight, measuring tubes (181, 182, 183, 184) connected to the flow dividers (201, 202) for guiding flowing medium along flow paths connected in parallel.

Abstract: A mass flowmeter is provided which operates on the Coriolis principle, having (1) at least four measurement tubes which can oscillate and through which a medium can flow, (2) at least one oscillation generator for excitation of the oscillations of the measurement tube, and (3) at least one oscillation sensor for detection of the excited oscillations of the measurement tubes. The measurement tubes are preferably arranged closely in parallel such that the flow cross section covered by the measurement tubes covers as small an area as possible. The use of four or more compactly arranged measurement tubes advantageously allows for the measurement of a high mass flow rate with measurement tubes having a relatively small cross section and length, resulting in a mass flowmeter having compact length and width dimensions, and which requires only a relatively low energy oscillation generator for excitation of the oscillations of the measurement tubes.

Abstract: For monitoring the tube arrangement, the measuring system of the invention includes, connected to the transmitter electronics, a temperature measuring arrangement having a first temperature sensor for producing a temperature signal dependent on a temperature of a first of the measuring tubes of the tube arrangement and at least a second temperature sensor for producing a temperature signal dependent on a temperature of a second of the measuring tubes of the tube arrangement. In the method of the invention, it is provided that, in the case of medium flowing through the tube arrangement, a temperature difference existing between the at least two measuring tubes as a result plugging is ascertained and, in case the ascertained temperature difference deviates from a predetermined limit value for the temperature difference representing a non-plugged tube arrangement, a partial plugging of the tube arrangement, especially a plugging of exactly one of the measuring tubes, is signaled.

Abstract: The present invention relates to a system, method, and computer program product for generating a drive signal for a vibrating measuring device (5). A drive chain (C1, C2, C3, CN) is selected from at least two drive chains (C1, C2, C3, CN). Each drive chain (C1, C2, C3, CN) modifies at least one pick-off signal to generate the drive signal. Each drive chain (C1, C2, C3, CN) generates a different mode of vibration in the at least one conduit (103A). The drive signal generated by the selected drive chain (C1, C2, C3, CN) is provided to a drive (104) of the vibrating measuring device (5).

Abstract: A flow meter (30) is provided that includes first and second flow tubes (103, 103?). The flow meter (30) also includes a stationary plate (250). At least a portion of the stationary plate (250) is positioned between the first and second flow tubes (103, 103?). At least one of a driver component or a pick-off components is coupled to the stationary plate (250).

Abstract: A very high frequency vibratory flow meter (100) is provided. The very high frequency vibratory flow meter (100) includes a flow meter assembly (10) including one or more flow conduits (103A, 103B). The flow meter assembly (10) is configured to generate a very high frequency response that is above a predetermined maximum decoupling frequency for the flow fluid independent of a foreign material size or a foreign material composition. The very high frequency vibratory flow meter (100) further includes meter electronics (20) coupled to the flow meter assembly (10) and configured to receive the very high frequency vibrational response and generate one or more flow measurements therefrom.

Abstract: A vibratory flow meter (5) for determining one or more flow fluid characteristics of a multi-phase flow fluid includes one or more flow conduits (103A,103B). The flow meter assembly (10) is configured to generate a very low frequency response that is below a predetermined minimum decoupling frequency for the flow fluid and to generate a very high frequency response that is above a predetermined maximum decoupling frequency for the flow fluid, independent of the foreign material size or the foreign material composition. The meter (100) further includes meter electronics (20) configured to receive one or more very low frequency vibrational responses and one or more very high frequency vibrational responses and determine the one or more flow fluid characteristics from the one or more very low frequency vibrational responses and the one or more very high frequency vibrational responses.

Abstract: A very low frequency vibratory flow meter (100) is provided. The very low frequency vibratory flow meter (100) includes a flow meter assembly (10) including one or more flow conduits (103A, 103B). The flow meter assembly (10) is configured to generate a very low frequency vibrational response that is below a predetermined minimum decoupling frequency for the flow fluid independent of a foreign material size or a foreign material composition. The very low frequency vibratory flow meter (100) further includes meter electronics (20) coupled to the flow meter assembly (10) and configured to receive the very low frequency vibrational response and generate one or more flow measurements therefrom.

Abstract: A measuring transducer comprising at least one measuring tube for conveying a flowing medium. The measuring tube vibrates at least at times during operation. A sensor arrangement, which serves to register oscillations of the at least one measuring tube. The measuring tube extends with an oscillatory length between an inlet-side, first measuring tube end, and an outlet-side, second measuring tube end, and, during operation, oscillates about an oscillation axis, which is parallel to or coincides with an imagined connecting axis which imaginarily connects the two measuring tube ends.

Abstract: A dual-driver vibratory flowmeter (100) is provided according to the invention. The dual-driver vibratory flowmeter (100) includes a first flowtube (102A) and a second flowtube (102B) positioned substantially adjacent to the first flowtube (102A). The first and second flowtubes (102A, 102B) include a longitudinal length L. The dual-driver vibratory flowmeter (100) further includes a first driver (121) comprising first and second driver portions (121A, 121B) and affixed to the first and second flowtubes (102A, 102B), with the first driver (121) being located at a third longitudinal location Y along the first and second flowtubes (102A, 102B) and a second driver (122) comprising first and second driver portions (122A, 122B) and affixed to the first and second flowtubes (102A, 102B), with the second driver (122) being located substantially at the third longitudinal location Y and substantially spaced-apart from the first driver (121).

Abstract: A measuring transducer, comprises at least one measuring tube for conveying a flowing medium. The measuring tube vibrates at least at times during operation. The measuring transducer further comprises a sensor arrangement, which serves to register oscillations of the measuring tube. The measuring tube extends with an oscillatory length between an inlet-side, first measuring tube end and an outlet-side, second measuring tube end, and, during operation, oscillates about an oscillation axis, which is parallel to or coincides with an imagined connecting axis which imaginarily connects the two measuring tube ends.

Abstract: The disclosure relates to a Coriolis mass flowmeter with an oscillatable straight measuring tube consisting of a corrosion-resistant metal, in particular of titanium or a titanium alloy, to which are attached mounted parts connected directly to the measuring tube for the implementation of the Coriolis measurement principle. Furthermore, stabilizing elements running parallel to the measuring tube are coupled to the measuring tube via mounted parts connected directly to the measuring tube, the mounted parts and the stabilizing elements consisting of a metal other than that of the measuring tube. The stabilizing elements are manufactured from a second material which possesses a coefficient of thermal expansion adapted to the metal of the measuring tube. The mounted parts connected directly to the measuring tube are manufactured from a third material which possesses a higher coefficient of thermal expansion than the metal of the measuring tube.

Abstract: A Coriolis mass flow meter targeted for measurement of a fluid with a minute flow rate is reduced in weight and size, the flow meter being in which a subframe supporting a vibration exciter and first and second detectors has an outer peripheral wall, a notch and an inner peripheral wall, a circuit board supported by a main frame is positioned in the portion of the notch, the circuit board is housed in a board case penetrating the main frame, and a liquid crystal monitor is mounted in the portion of the circuit board adjacent to supply/discharge portions of a pair of vibration tubes.

Abstract: For reducing an influence due to an external vibration, a frame has: a main frame that supports a vibration tube in a cantilever state; and a subframe that extends from the main frame toward a measurement portion side of the vibration tube, a detector and a vibration exciter are arranged on this subframe, and the outer case that surrounds the frame, the vibration tube and the like is engaged with the frame through the vibration isolating member.

Abstract: A method for detecting blockage of a measuring tube of a Coriolis flow measuring device, which has at least two measuring tubes. For this, the at least two measuring tubes are excited by at least one exciter to execute mechanical oscillations, mechanical oscillations of the measuring tubes are registered by at least one sensor and at least one measurement signal representing the mechanical oscillations is produced. At least one produced measurement signal is analyzed for the occurrence of a deviation of a resonance frequency of one measuring tube relative to a resonance frequency of the at least one other measuring tube. In case such a deviation occurs, blockage of a measuring tube is established.