Patents Assigned to Endress + Hauser Flowtec AG
  • Patent number: 10488234
    Abstract: A measuring tube for a magneto-inductive flow measuring device, comprising a support tube and a liner arranged in the support tube. The measuring tube has at least one terminal support bushing of porous material for anchoring the liner to the support tube. A magneto-inductive flow measuring device with such a measuring tube.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: November 26, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Werner Wohlgemuth, Frank Voigt
  • Patent number: 10488235
    Abstract: A measuring tube for a magneto-inductive flow measuring device, comprising a support tube, a liner arranged in the support tube and a reinforcement structure embedded in the liner. A helical contour is arranged between the support tube and the reinforcement structure. And a magneto-inductive flow measuring device having such a measuring tube.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: November 26, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Werner Wohlgemuth, Frank Voigt
  • Patent number: 10480969
    Abstract: A field device of measuring- and automation technology, which field device meets requirements for operation in explosion-endangered environments. Safe operation of the field device in explosion-endangered environments is assured by a pluggable connector coupling for electrical coupling of different field device components. An essential feature of the pluggable connector coupling is a sealing element for spatial and gas-tight sealing of a contact region of contacting elements of the pluggable connector coupling from a free volume remaining in the pluggable connector coupling.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 19, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Nikolai Fink, Frank Bonschab, Markus Beissert
  • Patent number: 10473497
    Abstract: A magneto-inductive flow measuring device for ascertaining flow of a measured medium through a measuring tube having a measuring tube axis, comprising: at least a first coil component having a coil body for accommodating a coil core of a coil. The coil is wound on the coil body and the coil core is arranged in a first passageway of the coil body with a longitudinal axis of the coil core coaxial with the coil. At least two cable strands are arranged between the coil core and the coil body, wherein the cable strands serve for tapping the signal of two or more measuring electrodes arranged on the measuring tube. The cable strands extend within the coil component essentially along a cutting plane, which extends perpendicular to the measuring tube axis.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: November 12, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Frank Voigt, Günther Bähr, Thomas Küng
  • Patent number: 10466151
    Abstract: A method is provided for measuring density of a fluid by means of at least one at least sectionally curved measuring tube. The measuring tube is adapted to be flowed through by the fluid and concurrently to be caused to vibrate over a wanted oscillatory length, namely a tube length measured from a first tube end to a second tube end, a length which is greater than a minimum separation of the second tube end from the first tube end. According to the invention, among other things, also a tilt measured value representing an inclination of the at least one measuring tube in the static resting position relative to a local acceleration of gravity is ascertained, in such a manner that such represents an angle of intersection between a direction vector of an imaginary first reference axis (y-axis) and a direction vector of an imaginary second reference axis (g-axis).
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 5, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Gerhard Eckert, Alfred Rieder, Hao Zhu
  • Patent number: 10461526
    Abstract: An apparatus for monitoring at least one physical or chemical process variable, comprising at least one sensor unit and an electronics unit for signal registration, evaluation and/or feeding, wherein the sensor unit is operated with alternating electrical current and/or communication between the electronics unit and the sensor unit occurs with alternating electrical current and/or alternating voltage. An explosion protection circuit with intrinsic safety, which includes a safety barrier, which has at least one unit for electrical current- and/or voltage limiting, is provided within the explosion protection circuit a unit for impedance matching, which unit for impedance matching includes at least one transformer.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: October 29, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Achim Wiest, Andreas Berger, Oliver Brumberg
  • Patent number: 10436692
    Abstract: An arrangement for measuring density of flowable media includes: a fluid path for conveying a medium; a pump for driving a defined volume flow of the medium in the fluid path; a pressure difference measuring arrangement for registering a pressure drop due to the volume flow of the medium between first and second pressure taps in the fluid path; a densimeter having at least one oscillator, which has at least one oscillatable measuring tube for conveying the medium, at least one exciter mechanism for exciting oscillations of the measuring tube, and at least one sensor arrangement for registering at least one oscillatory characteristic of the oscillator. The at least one measuring tube is arranged in the fluid path. An evaluation apparatus ascertains the density of the medium based on the volume flow, the volume flow dependent pressure drop and the at least one oscillatory characteristic of the oscillator.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 8, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Christof Huber, Ton Leenhoven
  • Patent number: 10429218
    Abstract: A measuring system for measuring at least one measured variable of a flowing fluid, comprises a fluid supply line, a transducer apparatus, which has a tube and at least one other tube and is adapted to deliver at least one measurement signal corresponding to the at least one measured variable, a fluid return line, and a fluid withdrawal line. To open a first flow path, which leads from the lumen of the fluid supply line to the lumen of the tube, further to the lumen of the tube and further to the lumen of the fluid return line, equally as well not to the lumen of the fluid withdrawal line, and thereafter to allow fluid to flow along the flow path for the maintaining the temperature and/or for cleaning of parts of the measuring system and/or for conditioning fluid.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: October 1, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Holger Bernhard, Michael Lammbrigger, Gebhard Gschwend, Christian Matt
  • Patent number: 10429220
    Abstract: A magneto-inductive flow measuring device comprising a measuring tube on which a magnet system and two or more measuring electrodes are arranged and/or secured. The measuring tube has in- and outlet regions with a first cross section and the measuring tube has between the in- and outlet regions a middle segment, which has a second cross section. The measuring electrodes are arranged in the middle segment of the measuring tube and the middle segment at least in the region of the measuring electrodes is surrounded by a tube holder, which guards against cross-sectional deformation of the second cross section.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: October 1, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Stefan Rupp, Thomas Sulzer, Wolfgang Brobeil, Oliver Popp
  • Patent number: 10408646
    Abstract: A method for defect detection for a signal line between an electrode and a measuring- and/or evaluation unit of a magneto-inductive flow measuring device having at least one measuring- and/or evaluation unit, as well as a measuring tube with at least two measuring electrodes and a third electrode, comprising steps as follows: A) ascertaining a ratio of at least two measured electrical impedances between the measuring electrodes and/or between at least one of the two measuring electrodes and the third electrode; B) comparing the impedance ratio with a desired value range and C) outputting a defect report, when the impedance ratio exceeds or subceeds the desired value range, and a magneto-inductive flow measuring device.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: September 10, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Andre Spahlinger, Markus Rufenacht, Christophe Boeglin
  • Patent number: 10408652
    Abstract: A Coriolis mass flow measuring device includes four bent measuring tubes, two exciter mechanisms, and two sensor arrangements. All four measuring tubes are joined inlet end and outlet end with collectors, where the measuring tubes are connected inlet end and outlet end pairwise with node plates to form oscillators, where the exciter mechanisms are adapted to excite bending oscillation working modes between the two measuring tubes of an oscillator, where the first oscillator and the second oscillator have bending oscillation working modes with first and second working mode eigenfrequencies (f11, f12), where the magnitude of the difference of the working mode eigenfrequencies of the two oscillators (|f11?f12|) amounts to at least 0.1 times, for example, at least 0.2 times and especially at least 0.4 times the lower of the two working mode eigenfrequencies, where the sensor arrangements are adapted to register oscillations of the oscillators.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: September 10, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Hao Zhu, Alfred Rieder
  • Patent number: 10401206
    Abstract: A thermal, flow measuring device for determining and/or monitoring a mass flow of a measured medium, comprising a sensor element (1, 11, 21) having a measuring tube (2, 12, 22) with a tube wall (7, 17, 27) and with at least a first and a second temperature sensor element, which are especially embodied as resistance thermometers (3, 13, 23, 33), wherein at least one of the temperature sensor elements is heatable, wherein the measuring tube (2, 12, 22) has a longitudinal axis (A) and a tube contour (8, 18, 28) with a first tube cross section in the end regions of the measuring tube (2, 12, 22), wherein the measuring tube (2, 12, 22) includes a narrowing having a second tube cross section, which differs in form and/or area from the first tube cross section, wherein the narrowing is divided into at least two segments (6, 16, 26), wherein at least one of the segments (6, 16, 26) is angled relative to the longitudinal axis (A) of the measuring tube (2, 12, 22) by an angle (?) of at least 5° and wherein, in each cas
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: September 3, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventor: Stephan Gaberthuel
  • Patent number: 10378566
    Abstract: A flow conditioner comprising a perforated plate with a central hole and four or more circular paths, which are arranged radially from the central hole and concentrically with one another, wherein holes are arranged on these concentric circular paths, characterized in that a preponderate number of holes of an intermediate circular path have a greater hole diameter than a preponderate number of holes of the innermost and a preponderate number of holes of the outermost circular paths.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: August 13, 2019
    Assignee: Endress+Hauser Flowtec AG
    Inventor: Vivek Kumar
  • Patent number: 10378939
    Abstract: The present disclosure relates to a method for manufacturing an ultrasonic transducer by exciting the sound wave via an electromechanical transducer disposed on a sensor body, determining a current propagation velocity of the sound wave on an exit surface of the sensor body, determining the difference between the current propagation velocity and the desired propagation velocity of the sound wave on the exit surface, determining difference between speed of sound in the sensor body and a desired speed of sound, removing material in the region of the exit surface of the sensor body, wherein the remaining material is dimensioned such that the current propagation speed of the sound wave on the exit surface of the sensor body, and/or the delay caused by the speed of sound in the sensor body, at least approximately agrees with the desired propagation speed of the sound wave on the exit surface.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 13, 2019
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Achim Wiest, Andreas Berger
  • Patent number: 10379145
    Abstract: A measuring device having a configurable measuring and operating electronics for delivering a measurement signal, includes a measurement transmitter with an electrical current control circuit for outputting a controlled electrical current, wherein in a first manner of operation an electrical current is set in a first range, and in a second manner of operation an electrical current is set in a second range having a greater interval than the first range; the measuring device further having a microcontroller circuit is connected with the electrical current control circuit for delivering a digital signal for operating the electrical current control circuit, wherein the digital signal has a LOW state and a HIGH state and wherein by operating the electrical current control circuit an output current can be set with an electrical current level in a first interval for the LOW state and in a second interval for the HIGH state.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: August 13, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Antoine Simon, Martin Jenzer
  • Patent number: 10371553
    Abstract: transducer apparatus comprises a transducer housing, a tube, a temperature sensor as well as a temperature sensor. The tube is arranged within a cavity of the transducer housing, in such a manner that an intermediate space is formed between a wall of the transducer housing facing the cavity inner surface and an outer surface of a wall of the tube facing the cavity. Furthermore, the tube is adapted to guide a fluid in its lumen, in such a manner that an inner surface of the wall of the tube facing the lumen is contacted by fluid guided in the lumen.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: August 6, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Alfred Rieder, Hao Zhu, Ennio Bitto, Gerhard Eckert, Josef Hubensteiner, Michael Wiesmann, Yaoing Lin
  • Publication number: 20190226890
    Abstract: The present disclosure relates to a method for measuring flow velocity or volume flow of a medium by means of a magneto inductive flow measuring device and to an arrangement having a magneto inductive flow measuring device, as well as to a filling plant with an arrangement, wherein the medium has a low conductivity. A high accuracy of measurement is achieved by provision of a first narrowing of a medium-containing pipeline and/or a second narrowing of a medium-containing measuring tube, wherein the pipeline leads the medium to a measuring tube of the flow measuring device.
    Type: Application
    Filed: June 26, 2017
    Publication date: July 25, 2019
    Applicant: Endress+Hauser Flowtec AG
    Inventors: Thomas Küng, Günther Bähr, Frank Voigt
  • Patent number: 10309866
    Abstract: The method serves for monitoring and/or checking a pressure device having a lumen surrounded by a wall for conveying and/or storing a fluid. To this end, the method comprises a step of registering both a strain of a first wall segment as well as also a strain of at least a second wall segment spaced from the first wall segment, for ascertaining a strain deviation value representing a difference between the strain of the first wall segment and the strain of the second wall segment, as well as a step of using the strain deviation value for ascertaining damage to the wall, as a result of plastic deformation of the wall and/or as a result of wear of the wall.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: June 4, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Hao Zhu, Alfred Rieder, Holger Bernhard
  • Patent number: 10305212
    Abstract: A connection apparatus comprises a platform, a plug connector having a plug connector part secured to the platform and electrically connected to the circuit of the field device and a plug connector part connectable with the connection cable and complementary to the first plug connector part, as well as a lid held movably relative to the platform for at least partially covering the plug connector formed by connecting the plug connector parts. The lid is swingable between a first end position, in which the lid at least partially covers the plug connector, and a second end position, and is additionally adapted in at least one open position located between the first end position and the second end position to expose the plug connector such that the plug connector part can be separated from the plug connector part, as well as at least in the first end position to secure the plug connector part connected with the plug connector part.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: May 28, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Bjorn Larsson, Timo Kretzler, Alfred Umkehrer, Michael Kirst
  • Patent number: 10283102
    Abstract: An ultrasonic transducer comprising a coupling element and a piezo element, wherein a metal disk is arranged between the coupling element and the piezo element, wherein the metal disk is connected with the piezo element or with the coupling element by means of an adhesive layer, characterized in that the adhesive layer is producible, at least in certain regions, by means of a photochemically curable adhesive.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: May 7, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Achim Wiest, Andreas Berger