Patents Assigned to GWF MessSysteme AG
  • Patent number: 11333676
    Abstract: A method and corresponding device are provided for determining a flow speed in a fluid conduit. The fluid conduit is provided with first, second and third ultrasonic wet transducers, wherein respective connection lines between transducers extend outside of a direction of average flow of the fluid conduit. First and second measuring signals are applied to the first ultrasonic wet transducer and received at the second and the third ultrasonic wet transducer, respectively. The measuring signals comprise a respective reversed signal portion with respect to time of a response signal. Respective first and second response signals are measured and the flow speed is derived from at least one of the first and second response signals.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: May 17, 2022
    Assignee: GWF MessSysteme AG
    Inventors: Thomas Werner Hies, Juergen Heinz-Friedrich Skripalle, Trung Dung Luong, Claus-Dieter Ohl
  • Patent number: 11243104
    Abstract: Disclosed is a flow meter comprising at least two measuring sensors spaced apart from each other, preferably ultrasonic sensors, whose measuring signals are reflected by a deposition-resistant reflector.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 8, 2022
    Assignee: GWF MessSysteme AG
    Inventor: Markus Helfenstein
  • Patent number: 11156488
    Abstract: A transducer is provided for emitting and receiving acoustic waves, a method for operating and a method for producing the same. The transducer comprises a casing that forms a cavity. The casing comprises an excitation surface and an emitting surface, which is arranged opposite to the excitation surface. A transducer element is provided at the excitation surface, and an acoustic diffuser is provided at the emitting surface of the casing, wherein a diffusing structure of the acoustic diffuser faces the cavity, and wherein the diffusing structure is provided by an array of columns.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 26, 2021
    Assignee: GWF MessSysteme AG
    Inventors: Thomas Werner Hies, Claus-Dieter Ohl, Trung Dung Luong
  • Patent number: 11137276
    Abstract: A microcontroller and a method are provided for determining a flow velocity with an electronic processing unit of an ultrasonic travel time flow meter with arbitrary waveform signals. The electronic processing unit has receiver and transmitter terminals, a signal processing unit and a signal generating unit that is configured to generate an oscillating electric output signal with a time dependent amplitude, wherein the time-dependent amplitude varies according to stored signal parameters.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: October 5, 2021
    Assignee: GWF MessSysteme AG
    Inventors: Markus Helfenstein, Florian Strasser
  • Patent number: 10928414
    Abstract: A method for determining a flow speed of a liquid in a fluid conduit is provided. During a signal-generating phase, an impulse signal is applied to a first ultrasonic transducer. A response signal is then received at a second ultrasonic transducer. A measuring signal is later derived from the response signal, wherein the derivation comprises reversing a signal portion with respect to time. During a measurement phase, a liquid moves with respect to the fluid conduit. The measuring signal is then applied to one of the two transducers and a response signal of the measuring signal is measured at the other transducer. A flow speed is derived from the response signal of the measuring signal.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: February 23, 2021
    Assignee: GWF MessSysteme AG
    Inventors: Thomas Werner Hies, Trung Dung Luong, Claus-Dieter Ohl, Juergen Heinz-Friedrich Skripalle
  • Patent number: 10746580
    Abstract: Disclosed is a flow meter with at least two measuring sensors, preferably ultrasonic sensors, spaced apart from each other, wherein the coupling of the measuring signals into and out of a fluid is performed via a coupling element According to the disclosure, the measuring channel is formed with an approximately oval or trapezoid cross-section.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: August 18, 2020
    Assignee: GWF MessSysteme AG
    Inventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
  • Patent number: 10704941
    Abstract: Disclosed is a flow meter with at least two measuring sensors, preferably ultrasonic sensors, spaced apart from each other, wherein the coupling of the measuring signals into and out of a fluid is performed via a coupling element which is inserted flush into a circumferential wall of a measuring channel.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: July 7, 2020
    Assignee: GWF MessSysteme AG
    Inventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
  • Patent number: 10530139
    Abstract: A housing for measuring instruments has a sealing element with conductor guides for guiding insulated conductors therethrough. The sealing element is prefabricated. The conductor ends of the conductors are at least partly stripped. A transition point between the insulated conductor and the partly stripped conductor end is located in the conductor guide within the sealing element.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: January 7, 2020
    Assignee: GWF Messsysteme AG
    Inventors: Jörg Wyss, Ralph Kayser, Samuel Hubacher, Walter Furrer, Thomas Frey
  • Publication number: 20190226892
    Abstract: Disclosed is a flow meter with at least two measuring sensors, preferably ultrasonic sensors, spaced apart from each other, wherein the coupling of the measuring signals into and out of a fluid is performed via a coupling element which is inserted flush into a circumferential wall of a measuring channel.
    Type: Application
    Filed: July 13, 2017
    Publication date: July 25, 2019
    Applicant: GWF MessSysteme AG
    Inventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
  • Publication number: 20190226893
    Abstract: Disclosed is a flow meter with at least two measuring sensors, preferably ultrasonic sensors, spaced apart from each other, wherein the coupling of the measuring signals into and out of a fluid is performed via a coupling element According to the disclosure, the measuring channel is formed with an approximately oval or trapezoid cross-section.
    Type: Application
    Filed: July 13, 2017
    Publication date: July 25, 2019
    Applicant: GWF MessSysteme AG
    Inventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
  • Patent number: 10036763
    Abstract: A method and corresponding device are provided for determining a flow speed in a fluid conduit. The fluid conduit is provided with first, second and third ultrasonic transducers, wherein respective connection lines between transducers extend outside of a symmetry axis of the fluid conduit. First and second measuring signals are applied to the first ultrasonic transducer and received at the second and the third ultrasonic transducer, respectively. The measuring signals comprise a respective reversed signal portion with respect to time of a response signal. Respective first and second response signals are measured and the flow speed is derived from at least one of the first and second response signals.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: July 31, 2018
    Assignee: GWF MessSysteme AG
    Inventors: Thomas Werner Hies, Juergen Heinz-Friedrich Skripalle, Trung Dung Luong, Claus-Dieter Ohl
  • Patent number: 9903882
    Abstract: A method for determining a flow speed of a liquid in a fluid conduit is provided. During a signal-generating phase, an impulse signal is applied to a first ultrasonic transducer. A response signal is then received at a second ultrasonic transducer. A measuring signal is later derived from the response signal, wherein the derivation comprises reversing a signal portion with respect to time. During a measurement phase, a liquid moves with respect to the fluid conduit. The measuring signal is then applied to one of the two transducers and a response signal of the measuring signal is measured at the other transducer. A flow speed is derived from the response signal of the measuring signal.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 27, 2018
    Assignee: GWF MessSysteme AG
    Inventors: Thomas Werner Hies, Trung Dung Luong, Claus-Dieter Ohl, Juergen Heinz-Friedrich Skripalle