Patents Assigned to Flowtec AG
  • Patent number: 8671776
    Abstract: 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: Grant
    Filed: December 28, 2010
    Date of Patent: March 18, 2014
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Vivek Kumar, Martin Anklin
  • Patent number: 8667853
    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.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: March 11, 2014
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Alfred Rieder, Rainer Lorenz, Michael Wiesmann
  • Publication number: 20140060154
    Abstract: 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: Application
    Filed: December 17, 2012
    Publication date: March 6, 2014
    Applicant: Endress + Hauser FLowtec AG
    Inventors: Coen Van Dijk, Omar Momente, Heinerich Hagenmeyer
  • Patent number: 8631712
    Abstract: 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: Grant
    Filed: September 8, 2011
    Date of Patent: January 21, 2014
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Hao Zhu, Wolfgang Drahm, Alfred Rieder
  • Publication number: 20140013858
    Abstract: 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: Application
    Filed: February 15, 2012
    Publication date: January 16, 2014
    Applicant: Endress + Hauser FLowtec AG
    Inventors: Johannes Ruchel, Wolfgang Brobeil
  • Publication number: 20140000383
    Abstract: 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: Application
    Filed: October 20, 2011
    Publication date: January 2, 2014
    Applicant: Endress + Hauser Flowtec AG
    Inventors: Mamadi Keita, Mike Touzin, Antoine Simon
  • Publication number: 20140000374
    Abstract: 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: Application
    Filed: November 24, 2011
    Publication date: January 2, 2014
    Applicant: Endress + Hauser Flowtec AG
    Inventors: Alfred Rieder, Christof Huber, Ennio Bitto, Christian Schutze, Marcel Braun
  • Patent number: 8613227
    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.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 24, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Ennio Bitto, Christof Huber, Marcel Braun, Alfred Rieder, Christian Schutze
  • Patent number: 8614620
    Abstract: 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: Grant
    Filed: April 13, 2007
    Date of Patent: December 24, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Alain Chomik, Udo Fuchs, Pierre Harnist
  • Patent number: 8596142
    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.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: December 3, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Christof Huber, Vivek Kumar, Christian Schutze
  • Patent number: 8596144
    Abstract: 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: Grant
    Filed: August 30, 2011
    Date of Patent: December 3, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Alfred Rieder
  • Patent number: 8598865
    Abstract: 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: Grant
    Filed: April 22, 2009
    Date of Patent: December 3, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Jiri Karbula, Andreas Fuz
  • Patent number: 8596143
    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.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: December 3, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Alfred Rieder, Hao Zhu, Ennio Bitto, Christian Schutze, Christof Huber, Marcel Braun
  • Patent number: 8590399
    Abstract: 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: Grant
    Filed: June 2, 2009
    Date of Patent: November 26, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Mamadi Keita, Mike Touzin
  • Patent number: 8590400
    Abstract: 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: Grant
    Filed: June 2, 2009
    Date of Patent: November 26, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Mamadi Keita, Mike Touzin
  • Patent number: 8587326
    Abstract: 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: Grant
    Filed: September 18, 2009
    Date of Patent: November 19, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Markus Rufenacht
  • Patent number: 8583385
    Abstract: 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: Grant
    Filed: October 22, 2010
    Date of Patent: November 12, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Axel Pfau, Vivek Kumar, Anastasios Badarlis
  • Patent number: 8578786
    Abstract: 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: Grant
    Filed: December 11, 2009
    Date of Patent: November 12, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Martin Hertel, Rainer Hocker
  • Publication number: 20130291652
    Abstract: 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: Application
    Filed: April 2, 2013
    Publication date: November 7, 2013
    Applicant: Endress + Hauser Flowtec AG
    Inventor: Endress + Hauser Flowtec AG
  • Patent number: 8573026
    Abstract: 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: Grant
    Filed: April 20, 2006
    Date of Patent: November 5, 2013
    Assignee: Endress + Hauser Flowtec AG
    Inventors: Thomas Froehlich, Matthias Altendorf, Torsten Strunz