Patents Assigned to Endress + Hauser Flowtec AG
  • Patent number: 10281316
    Abstract: A flow measuring device for ascertaining a corrected measured value of a flow velocity and/or a corrected mass flow of a medium, especially a gas, in a measuring tube, including: an apparatus for ascertaining a first measured value of flow velocity and/or mass flow of the medium by thermal, mass flow measurement; an apparatus for ascertaining velocity of sound and/or frequency dependent damping of an acoustic signal, especially an ultrasonic signal, in the medium and/or an apparatus for ascertaining an optical, wavelength dependent absorption of an optical and/or excited fluorescence of the medium, and an evaluation unit for correcting the ascertained first measured value of mass flow or flow velocity based on the ascertained sound velocity values and/or the frequency dependent, ascertained damping values of the acoustic signal and/or the ascertained absorption values of the optical signal and/or the florescence values of the medium, and method for ascertaining a corrected measured value of flow velocity and/
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: May 7, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Paul Ceglia, Achim Wiest, Oliver Brumberg
  • Patent number: 10269336
    Abstract: An arrangement comprising an ultrasonic transducer and a damping element with a longitudinal axis, which damping element connects the ultrasonic transducer with a housing- or measuring tube wall. The transducer has an end piece with a medium-contacting surface, from which ultrasonic signals are transferred into a gaseous or liquid medium. The damping element has at least two annular grooves and an annular mass segment arranged therebetween, characterized in that the damping element has a first eigenfrequency, in which the annular mass segment executes an axial movement parallel to the longitudinal direction of the damping element. This first eigenfrequency is the highest eigenfrequency, in the case that a plurality of eigenfrequencies are present, in the case of which the annular mass segment executes an axial movement parallel to the longitudinal direction of the damping element, and the damping element has a second eigenfrequency, in which the annular mass segment executes a rotary movement.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: April 23, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Yaoying Lin, Alfred Rieder, Wolfgang Drahm, Michal Bezdek, Pierre Ueberschlag
  • Patent number: 10256830
    Abstract: A converter circuit includes a current interface with a control input, with a current signal output and a current output. The converter circuit includes a micro-processor with a measuring signal input for the digital measuring signal, with a current signal input connected to the current signal output of the current interface, and with a control output connected to the control input of the current interface. The current interface lets the signal current flow through the current output and simultaneously adjust both the amperage to a stationary amperage level corresponding to a control value currently applied to the control input, and to output a sequence of current values at the current signal output.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 9, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Antoine Simon, Francois Klein
  • Patent number: 10247593
    Abstract: Apparatus for measuring the flow of a fluid through a measuring tube using the magneto inductive measuring principle, comprising a magnet system for producing a constant magnetic field perpendicular to the flow direction of the fluid, at least two measuring electrodes coupling with the fluid and secured on a measuring tube subsection for sensing an induced voltage, at least one electronics unit for signal registration, evaluation and/or power supply, and a housing, wherein the housing bounds and protects against the environment the measuring tube subsection and at least one other component secured outwardly thereto on the side facing away from the fluid, wherein the housing is manufactured at least partially of a thermoplastic material, which encases with accurate fit the measuring tube subsection and the at least one other component secured thereto.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 2, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventor: Thomas Sulzer
  • Patent number: 10234338
    Abstract: A transducer apparatus comprises a transducer housing, a tube 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. 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: March 19, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Alfred Rieder, Hao Zhu, Michael Wiesmann
  • Patent number: 10215602
    Abstract: An apparatus for measuring volume flow of a fluid flowing through a measuring tube in the direction of its longitudinal axis, comprising a coil arrangement, at least two measuring electrodes coupling with the fluid and a control/evaluation unit, which in connection with the coil arrangement produces a magnetic field periodically changing its polarity and extending essentially transversely to the longitudinal axis of the measuring tube. The control/evaluation unit during a measuring phase at an essentially constant magnetic field determines the volume flow of the fluid in the measuring tube based on a voltage induced in the measuring electrodes. The control/evaluation unit supplies the coil arrangement with an overvoltage during a delay phase, and the delay phase begins at the point in time of the reversal of the polarity of the magnetic field and ends at the point in time of the beginning of the measuring phase.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: February 26, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventor: Thomas Budmiger
  • Patent number: 10199028
    Abstract: Disclosed is an ultrasonic transducer mounting assembly comprising an ultrasonic transducer element, a transducer housing inside which the ultrasonic transducer element is arranged, and an accommodation unit inside which the transducer housing is clamped in a clamping section. The disclosed assembly is characterized in that the clamping section comprises at least one bearing that has at least one rolling element, in particular at least one ball bearing that has at least one ball, for acoustically decoupling the transducer housing from the accommodation unit.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: February 5, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Pierre Ueberschlag, Michal Bezdek, Andreas Berger
  • Patent number: 10175089
    Abstract: A method for monitoring a measuring device of automation technology, wherein the measuring device has a capacitive sensor the sensor has at least one capacitor, and the at least one capacitor is applied for determining or monitoring a process variable. A loss resistance of the at least one capacitor is measured by determining the charge state of the at least one capacitor at a first point in time and at a subsequent, second point in time, and, based on a change of the charge state between the first point in time and the second point in time, information is won concerning disturbance of the ability of the measuring device to function.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: January 8, 2019
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Hanspeter Schmid, Werner Tanner, Dirk Sutterlin, Martin Koch
  • Patent number: 10156508
    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: Grant
    Filed: June 14, 2016
    Date of Patent: December 18, 2018
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Coen Van Dijk, Omar Momente, Heinerich Hagenmeyer
  • Patent number: 10145714
    Abstract: A field device, especially an ultrasonic, flow measuring device, comprising: a transmitter for producing an alternating exciter signal; and at least one transducer, especially first and second ultrasonic transducers. The transmitter additionally has a generator for producing the alternating exciter signal and a transmitting stage, wherein the generator is connected via the transmitting stage with at least the first ultrasonic transducer. An output of the transmitting stage is connected with the transducer, especially the first ultrasonic transducer, via a first signal path, wherein the first signal path has a first resistance element, wherein a second signal path branches from the first signal path, wherein the second signal path has a second resistance element connected on one side to ground for lessening impedance related fluctuations of the exciter signal, wherein the second signal path branches from the first signal path between the output of the transmitting stage and the first resistance element.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: December 4, 2018
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Achim Wiest, Oliver Brumberg
  • Patent number: 10113890
    Abstract: A measuring arrangement, comprising: a pipe with a pipe axis and an ultrasonic, flow measuring device. The ultrasonic, flow measuring device has a sensor unit, which is fixed in a hole in the pipe, which hole is introduced essentially perpendicularly to the pipe axis into the pipe wall. The sensor unit has a rail or a rod with a longitudinal axis. The rail or the rod bears at least two ultrasonic transducers, which define a signal path, wherein the signal path extends parallel to or on the longitudinal axis of the rail or of the rod, and wherein the signal path is tilted from a perpendicular connecting line between the center point of the hole and the pipe axis. In addition, an ultrasonic, flow measuring device is noted.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: October 30, 2018
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Pierre Ueberschlag, Patrick Oudoire
  • Publication number: 20180306620
    Abstract: A thermal, flow measuring device comprising a sensor with a metal sensor housing, which includes a cap with a lateral surface and an end face, wherein the sensor housing has at least first and second pin sleeves, which protrude starting from the end face, wherein the sensor housing has a first heater in a first of the two pin sleeves and a temperature sensor in a second of the two pin sleeves for ascertaining a temperature of the medium; wherein the end face of the cap is divided at least into a base area and at least a first planar area inclined relative to the base area by an angle, wherein a second heater is arranged on an inner surface of the cap in the region of this first area.
    Type: Application
    Filed: September 8, 2016
    Publication date: October 25, 2018
    Applicant: Endress+Hauser Flowtec AG
    Inventors: Hanno Schultheis, Alexander GrĂ¼n, Axel Pfau
  • Patent number: 10107661
    Abstract: A thin-film sensor for a thermal flowmeter with at least a first substrate layer made of electrically non-conductive material, a second layer made of electrically conductive material and a cover layer to protect the resistance layer against abrasion, wherein the second layer is designed as two sensor elements, wherein at least a first of the two sensor elements is designed to introduce a heat quantity into a medium, and at least a second of the two sensor elements is designed to determine the ambient temperature, and the thin-film sensor has a gap that isolates the two sensor elements from one another.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 23, 2018
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Harald Muller, Axel Pfau, Florian Krogmann, Thomas Schonstein
  • Patent number: D828195
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 11, 2018
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D828196
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 11, 2018
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D828197
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 11, 2018
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D831518
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: October 23, 2018
    Assignee: ENDRESS + HAUSER FLOWTEC AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D838614
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: January 22, 2019
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D838615
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: January 22, 2019
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss
  • Patent number: D838616
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: January 22, 2019
    Assignee: Endress+Hauser Flowtec AG
    Inventors: Beat Tschudin, Jean-Claude Chevrolet, Martin Schultheiss