Patents Assigned to GWF MessSysteme AG
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Patent number: 11333676Abstract: 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: GrantFiled: February 13, 2020Date of Patent: May 17, 2022Assignee: GWF MessSysteme AGInventors: Thomas Werner Hies, Juergen Heinz-Friedrich Skripalle, Trung Dung Luong, Claus-Dieter Ohl
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Patent number: 11243104Abstract: 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: GrantFiled: August 7, 2018Date of Patent: February 8, 2022Assignee: GWF MessSysteme AGInventor: Markus Helfenstein
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Patent number: 11156488Abstract: 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: GrantFiled: October 7, 2019Date of Patent: October 26, 2021Assignee: GWF MessSysteme AGInventors: Thomas Werner Hies, Claus-Dieter Ohl, Trung Dung Luong
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Patent number: 11137276Abstract: 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: GrantFiled: March 31, 2021Date of Patent: October 5, 2021Assignee: GWF MessSysteme AGInventors: Markus Helfenstein, Florian Strasser
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Patent number: 10928414Abstract: 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: GrantFiled: January 14, 2020Date of Patent: February 23, 2021Assignee: GWF MessSysteme AGInventors: Thomas Werner Hies, Trung Dung Luong, Claus-Dieter Ohl, Juergen Heinz-Friedrich Skripalle
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Patent number: 10746580Abstract: 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: GrantFiled: July 13, 2017Date of Patent: August 18, 2020Assignee: GWF MessSysteme AGInventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
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Patent number: 10704941Abstract: 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: GrantFiled: July 13, 2017Date of Patent: July 7, 2020Assignee: GWF MessSysteme AGInventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
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Patent number: 10530139Abstract: 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: GrantFiled: July 29, 2015Date of Patent: January 7, 2020Assignee: GWF Messsysteme AGInventors: Jörg Wyss, Ralph Kayser, Samuel Hubacher, Walter Furrer, Thomas Frey
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Publication number: 20190226892Abstract: 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: ApplicationFiled: July 13, 2017Publication date: July 25, 2019Applicant: GWF MessSysteme AGInventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
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Publication number: 20190226893Abstract: 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: ApplicationFiled: July 13, 2017Publication date: July 25, 2019Applicant: GWF MessSysteme AGInventors: Holger Kuhlemann, Mark Frister, Jürgen Skripalle, Markus Helfenstein
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Patent number: 10036763Abstract: 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: GrantFiled: December 15, 2017Date of Patent: July 31, 2018Assignee: GWF MessSysteme AGInventors: Thomas Werner Hies, Juergen Heinz-Friedrich Skripalle, Trung Dung Luong, Claus-Dieter Ohl
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Patent number: 9903882Abstract: 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: GrantFiled: April 25, 2017Date of Patent: February 27, 2018Assignee: GWF MessSysteme AGInventors: Thomas Werner Hies, Trung Dung Luong, Claus-Dieter Ohl, Juergen Heinz-Friedrich Skripalle