Patents Assigned to Flowtec AG
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Patent number: 8671776Abstract: 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.Type: GrantFiled: December 28, 2010Date of Patent: March 18, 2014Assignee: Endress + Hauser Flowtec AGInventors: Vivek Kumar, Martin Anklin
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Patent number: 8667853Abstract: 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.Type: GrantFiled: February 15, 2011Date of Patent: March 11, 2014Assignee: Endress + Hauser Flowtec AGInventors: Alfred Rieder, Rainer Lorenz, Michael Wiesmann
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Publication number: 20140060154Abstract: A method for producing at least one oscillation measurement signal, which has vibrations of a vibratory body are registered. A temperature sensor is applied thermally attached with a non fluid contacting, second surface of the vibratory body for producing a temperature measurement signal representing a time curve of a variable temperature 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, to a new temperature value. 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.Type: ApplicationFiled: December 17, 2012Publication date: March 6, 2014Applicant: Endress + Hauser FLowtec AGInventors: Coen Van Dijk, Omar Momente, Heinerich Hagenmeyer
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Patent number: 8631712Abstract: A method for detecting complete or partial plugging of a measuring tube of a Coriolis flow measuring device, which is insertable into a pipeline, and which has a measuring transducer of the vibration type having at least two measuring tubes connected for parallel flow. The method includes, in such case, the steps of measuring a subset flow occurring in a subset of the measuring tubes, and comparing a subset flow value obtained from this measurement with a reference value to be expected for this subset. The reference value is, in such case, determined from a total mass flow determined in the context of a Coriolis mass flow measuring. Additionally, the method includes the step of detecting plugging of at least one measuring tube of the measuring transducer, if the subset flow value deviates from the reference value by more than a limit value.Type: GrantFiled: September 8, 2011Date of Patent: January 21, 2014Assignee: Endress + Hauser Flowtec AGInventors: Hao Zhu, Wolfgang Drahm, Alfred Rieder
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Publication number: 20140013858Abstract: A measuring tube for a lining of a measuring tube of a flow measuring device, wherein a nanoparticle is chemically bound to a polymer.Type: ApplicationFiled: February 15, 2012Publication date: January 16, 2014Applicant: Endress + Hauser FLowtec AGInventors: Johannes Ruchel, Wolfgang Brobeil
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Publication number: 20140000383Abstract: The present invention relates to a measuring transducer of the vibration-type for a fluid flowing in a flexible hose. The measuring transducer includes, in such case, a hose carrier unit, which has at least sectionally a loop-shaped outer contour, around which a flexible hose can be led. Furthermore, the measuring transducer includes a clamping unit, by which a flexible hose led in use around the loop-shaped outer contour is tightenable against the loop-shaped outer contour, at least one exciter coupled to the hose carrier unit, by which the hose carrier unit is excitable to execute mechanical oscillations, which are accompanied by alternating elastic deformation of the hose carrier unit, and at least one oscillation sensor, by which mechanical oscillations of the hose carrier unit and/or a flexible hose installed in use in the measuring transducer are registerable.Type: ApplicationFiled: October 20, 2011Publication date: January 2, 2014Applicant: Endress + Hauser Flowtec AGInventors: Mamadi Keita, Mike Touzin, Antoine Simon
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Publication number: 20140000374Abstract: A measuring transducer having exactly four flow openings, and an outlet-side housing end formed by means of an outlet-side flow divider having exactly four flow openings. A tube arrangement has 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 inlet-side flow divider, and with an outlet-side measuring tube end into one of the flow openings of the outlet-side flow divider. A first coupling element for adjusting eigenfrequencies of natural oscillation modes of the tube arrangement. An electro-mechanical exciter mechanism of the measuring transducer serves for producing and/or maintaining mechanical oscillations of the four measuring tubes.Type: ApplicationFiled: November 24, 2011Publication date: January 2, 2014Applicant: Endress + Hauser Flowtec AGInventors: Alfred Rieder, Christof Huber, Ennio Bitto, Christian Schutze, Marcel Braun
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Patent number: 8613227Abstract: 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.Type: GrantFiled: December 16, 2010Date of Patent: December 24, 2013Assignee: Endress + Hauser Flowtec AGInventors: Ennio Bitto, Christof Huber, Marcel Braun, Alfred Rieder, Christian Schutze
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Patent number: 8614620Abstract: In a method for parametering a field device of process automation technology, wherein the field device is connected via a bus system with a control unit, parameter values are packaged in telegrams of cyclic services and transmitted to the field device whose parameter values are to be changed. No acyclic services are required for changing parameter values.Type: GrantFiled: April 13, 2007Date of Patent: December 24, 2013Assignee: Endress + Hauser Flowtec AGInventors: Alain Chomik, Udo Fuchs, Pierre Harnist
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Patent number: 8596142Abstract: 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.Type: GrantFiled: July 23, 2010Date of Patent: December 3, 2013Assignee: Endress + Hauser Flowtec AGInventors: Christof Huber, Vivek Kumar, Christian Schutze
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Patent number: 8596144Abstract: A measuring system comprises 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 of the invention corrects a change of at least one characteristic variable of the oscillation measurement signals delivered from the measuring transducer.Type: GrantFiled: August 30, 2011Date of Patent: December 3, 2013Assignee: Endress + Hauser Flowtec AGInventor: Alfred Rieder
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Patent number: 8598865Abstract: A measuring device with at least one control unit and an electrical current controller. The measuring- and operating electronics is connected to a current loop and the control unit is connected with the electrical current controller and provides the electrical current controller a reference input. The reference input corresponds to a desired value of the measurement signal current and the electrical current controller is suppliable with a primary feedback signal. The primary feedback signal corresponds to an actual value of the measurement signal current set in the current loop. The electrical current controller outputs a control signal formed from a control error signal, wherein at least one evaluation unit is provided, which compares at least one value of the control signal output by the electrical current controller with at least one reference value. The comparison indicates whether the value of the control signal exceeds or subceeds the reference value.Type: GrantFiled: April 22, 2009Date of Patent: December 3, 2013Assignee: Endress + Hauser Flowtec AGInventors: Jiri Karbula, Andreas Fuz
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Patent number: 8596143Abstract: 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.Type: GrantFiled: September 15, 2011Date of Patent: December 3, 2013Assignee: Endress + Hauser Flowtec AGInventors: Alfred Rieder, Hao Zhu, Ennio Bitto, Christian Schutze, Christof Huber, Marcel Braun
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Patent number: 8590399Abstract: An apparatus for determining and/or monitoring of at least one flow parameter of a medium, wherein the medium flows through a measuring unit, wherein at least one exciter transducer element is provided, which, based on an exciter signal, excites the measuring unit to mechanical oscillations, and wherein at least one receiver transducer element is provided, which receives mechanical oscillations of the measuring unit as a received signal. The measuring unit has at least one guiding unit and one carrying unit, the medium flows through the guiding unit, the guiding unit and the carrying unit are mechanically coupled with one another, the receiver transducer element and the exciter transducer element are mechanically coupled with the carrying unit, and the receiver transducer element and the exciter transducer element are mechanically coupled indirectly via the carrying unit with the guiding unit.Type: GrantFiled: June 2, 2009Date of Patent: November 26, 2013Assignee: Endress + Hauser Flowtec AGInventors: Mamadi Keita, Mike Touzin
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Patent number: 8590400Abstract: An apparatus for determining and/or monitoring at least one flow parameter of a medium, wherein the medium flows through at least one measuring tube essentially along an imaginary flow axis, wherein at least one exciter transducer element is provided, which, based on an exciter signal, excites the measuring tube to mechanical oscillations, and wherein at least one receiver transducer element is provided, which receives mechanical oscillations of the measuring tube as a received signal. The invention includes that at least one separating unit is provided, and that the separating unit is embodied and arranged in the measuring tube in such a manner, that at least two sub measuring tubes result in the measuring tube, wherein the medium flows through the at least two sub measuring tubes essentially along the imaginary flow axis.Type: GrantFiled: June 2, 2009Date of Patent: November 26, 2013Assignee: Endress + Hauser Flowtec AGInventors: Mamadi Keita, Mike Touzin
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Patent number: 8587326Abstract: A method for operating a magneto-inductive flow measuring device having a measuring tube, wherein an at least partially electrically-conductive measured material flows through the measuring tube. For determining flow, there is produced by means of at least one coil arrangement a clocked magnetic field, which at least partially passes through the measured material, wherein the magnetic field is produced by an exciter current, which flows through the coil arrangement. The magnetic field is operated with at least a first clocking, wherein, in a case in which the coil arrangement is free of exciter current, an electrical potential difference is sensed between the measured material and a reference potential by means of at least a first measuring electrode communicating with the measured material.Type: GrantFiled: September 18, 2009Date of Patent: November 19, 2013Assignee: Endress + Hauser Flowtec AGInventor: Markus Rufenacht
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Patent number: 8583385Abstract: Thermal, flow measuring device and method for operating a thermal, flow measuring device. The thermal, flow measuring device has a first sensor with a first heatable resistance thermometer and at least an additional, second sensor with a second heatable resistance thermometer; wherein a decision coefficient is calculated according to the formula DC=(PC1?PC2)/PC1, with PC1(t=t1)=P1,1(t1)/(T1,heated;actual(t=t1)?Tmedium;actual(t=t1)) and PC2(t=t2)=P2,2(t2)/(T2,heated;actual(t=t2)?Tmedium;actual(t=t2)), with P being the heating powers consumed by the corresponding resistance thermometers at the points in time t, and T being the temperature values; wherein the value of the decision coefficient indicates the flow direction of a measured medium in the measuring tube.Type: GrantFiled: October 22, 2010Date of Patent: November 12, 2013Assignee: Endress + Hauser Flowtec AGInventors: Axel Pfau, Vivek Kumar, Anastasios Badarlis
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Patent number: 8578786Abstract: A measuring arrangement for determining a chemical and/or physical, measured variable-especially a volume flow and/or mass flow-of a measured material flowing through a pipeline, wherein the measuring arrangement comprises a measuring transducer, wherein the measuring transducer includes at least one optical waveguide, which serves for producing, registering and/or transmitting measurement signals, and wherein the registering of the measuring signals in the optical waveguide occurs by means of a Fabry-Pérot sensor.Type: GrantFiled: December 11, 2009Date of Patent: November 12, 2013Assignee: Endress + Hauser Flowtec AGInventors: Martin Hertel, Rainer Hocker
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Publication number: 20130291652Abstract: A measuring transducer serves for producing vibration signals corresponding to parameters of a flowing medium comprises a measuring transducer housing having housing ends and, extending within the measuring transducer housing between its housing ends, a tube arrangement formed by means of at least two tubes. Of the two tubes, at least one tube serves as a measuring tube conveying flowing medium and the other tube is mechanically connected with the tube by means of a first coupling element to form an inlet-side coupling zone and by means of a second coupling element to form an outlet-side coupling zone. At least the first coupling element has in a region extending between the tubes a slit having at least one closed end. Slit has a maximal slit width and a maximal slit length, which is greater than the maximal slit width. Placed partially within the slit is a connecting element, which contacts a slit edge enclosing said slit.Type: ApplicationFiled: April 2, 2013Publication date: November 7, 2013Applicant: Endress + Hauser Flowtec AGInventor: Endress + Hauser Flowtec AG
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Patent number: 8573026Abstract: A method for ascertaining volume- or mass-flow of a medium in a pipeline, or measuring tube, of radius (r) via a sound entrainment method, wherein ultrasonic measuring signals are transmitted and/or received along a plurality of defined sound paths (m). During a calibration phase, successive, different flow profiles (v(r)) of a measured medium are established in the pipeline, or in the measuring tube, and wherein, for each flow profile (v(r)), a defined volume flow, or a defined mass flow, is ascertained, wherein, on the basis of measured values (vx(r1) . . . vx(rm)) ascertained in the separate measuring paths (m), each flow profile (v(r)) established in the pipeline, or in the measuring tube, is described by a characteristic parameter set (a1, . . . , an with n?N) and wherein, for each flow profile (V(r)), on the basis of the defined volume- or mass-flow and on the basis of the measured volume- or mass-flow, a flow-profile-dependent correction factor MF(a1, . . .Type: GrantFiled: April 20, 2006Date of Patent: November 5, 2013Assignee: Endress + Hauser Flowtec AGInventors: Thomas Froehlich, Matthias Altendorf, Torsten Strunz