Patents Assigned to KROHNE S.A.S.
-
Patent number: 11099051Abstract: A method for determining the fill level of a medium involves continuous wave radar measurement and a corresponding fill level measuring device. A coded transmit signal is emitted by a transmitter, reflected at the medium, and received by a receiver as a reflection signal. The reflection signal and a signal derived from the transmit signal are subjected to a correlation analysis, and a correlation outcome results. A control and evaluation unit determines the time offset of the correlated signals with the correlation outcome, and uses it to determine the fill level of the medium. The reflection signal and the derived signal are mixed with the analog mixer into a mixer output signal that is sampled and quantized to a digital mixer output signal. The correlator has a digital integrator with which a sequence of digital mixer output signals is digitally integrated into the correlation outcome.Type: GrantFiled: October 5, 2018Date of Patent: August 24, 2021Assignee: KROHNE S.A.S.Inventors: Michael Vogt, Robert Storch, Gordon Notzon
-
Patent number: 10830630Abstract: A TDR fill level measuring device for measuring the fill level of a medium in a container, having a transmitting unit for transmitting a pulse-shaped electromagnetic measuring signal, a receiving unit for receiving a reflection signal, an evaluation unit for evaluating the reflection signal and a waveguide for guiding the measuring signal and the reflection signal, the waveguide having at least two waveguide sections, each of which has a functional waveguide cross-sectional face, wherein the functional waveguide cross-sectional face corresponds to the cross-sectional face of the waveguide conductor, wherein a reference reflector is present, at least a part of the measuring signal being reflected at least once on the reference reflector during operation. High reliability and a simply design are achieved by the reference reflection being formed by a transition between two waveguide sections having different shapes and/or different sizes of the functional waveguide cross-sectional face.Type: GrantFiled: August 2, 2018Date of Patent: November 10, 2020Assignee: KROHNE S.A.S.Inventor: Mahmoud Khodjet Kesba
-
Patent number: 10782175Abstract: A method for determining the fill level of a process medium arranged in a container using a TDR fill level meter having at least one signal line for guiding an electromagnetic signal, a signal line head and an electronics unit, the signal line extending into the process medium, the method having at least the steps of generating a pulsed transmitter signal with the electronics unit, wherein the transmission signal propagates along the signal line as measuring signal with changing amplitude, detecting and evaluating at least one reflection signal with the electronics unit, wherein the reflection signal is a reflection of the measuring signal on an interface between a first and a second medium having different impedances, the relative permittivity of the second medium is determined at least in dependence on the amplitude of the measuring signal transmitted through the first medium and the amplitude of the reflection signal.Type: GrantFiled: April 12, 2018Date of Patent: September 22, 2020Assignee: KROHNE S.A.S.Inventors: Mahmoud Khodjet-Kesba, Vincent Pichot
-
Patent number: 10718655Abstract: A level meter and a method for monitoring the level meter operating according to the radar principle, in which a signal conductor is lead out of an inner space of a leakage chamber of a bracket housing through a process-side opening of the leakage chamber and/or of the bracket housing into the process-side outer space of the bracket housing. The method involves transmitting a signal in the form of a pulse along the signal conductor, receiving a reflected received signal, relaying the received signal to the control and evaluation unit. In addition to the simple verification of the presence of a leak, a change in the received signal can also be quantified by the frequency spectrum of the received signal being determined and monitoring of the level meter carried out in the frequency domain.Type: GrantFiled: May 10, 2017Date of Patent: July 21, 2020Assignee: KROHNE S.A.S.Inventors: Vincent Pichot, Mahmoud Khodjet Kesba
-
Patent number: 10330516Abstract: A probe holder for a fill level measuring device operating with the radar principle has a holder housing, a signal conductor for guiding emitted and/or received signals and a spacer. The signal conductor is led out of the interior space of the holder housing through an opening of the holder housing into a process side exterior space of the holder housing. The spacer is arranged in the opening of the holder housing and keeps the signal conductor spaced from the holder housing in the opening. The probe holder realizes a seal relative to the process area in a simple, but effective manner in that the spacer is held in the holder housing by a shrink-fit so that a sealed closure is created between the holder housing and the spacer in the shrunken-in state.Type: GrantFiled: September 23, 2016Date of Patent: June 25, 2019Assignee: KROHNE S.A.S.Inventors: Vincent Pichot, Laurent Peigat
-
Publication number: 20190063982Abstract: A TDR fill level measuring device for measuring the fill level of a medium in a container, having a transmitting unit for transmitting a pulse-shaped electromagnetic measuring signal, a receiving unit for receiving a reflection signal, an evaluation unit for evaluating the reflection signal and a waveguide for guiding the measuring signal and the reflection signal, the waveguide having at least two waveguide sections, each of which has a functional waveguide cross-sectional face, wherein the functional waveguide cross-sectional face corresponds to the cross-sectional face of the waveguide conductor, wherein a reference reflector is present, at least a part of the measuring signal being reflected at least once on the reference reflector during operation. High reliability and a simply design are achieved by the reference reflection being formed by a transition between two waveguide sections having different shapes and/or different sizes of the functional waveguide cross-sectional face.Type: ApplicationFiled: August 2, 2018Publication date: February 28, 2019Applicant: KROHNE S.A.S.Inventor: Mahmoud Khodjet Kesba
-
Publication number: 20180306632Abstract: A method for determining the fill level of a process medium arranged in a container using a TDR fill level meter having at least one signal line for guiding an electromagnetic signal, a signal line head and an electronics unit, the signal line extending into the process medium, the method having at least the steps of generating a pulsed transmitter signal with the electronics unit, wherein the transmission signal propagates along the signal line as measuring signal with changing amplitude, detecting and evaluating at least one reflection signal with the electronics unit, wherein the reflection signal is a reflection of the measuring signal on an interface between a first and a second medium having different impedances, the relative permittivity of the second medium is determined at least in dependence on the amplitude of the measuring signal transmitted through the first medium and the amplitude of the reflection signal.Type: ApplicationFiled: April 12, 2018Publication date: October 25, 2018Applicant: KROHNE S.A.S.Inventors: Mahmoud Khodjet-Kesba, Vincent Pichot
-
Patent number: 9964426Abstract: A method and device for level measurement according to the propagation time method in which at least one conductor unit (1) is supplied with pulse-like electromagnetic transmission signals and in which electromagnetic response signals are tapped from the conductor unit (1). The method for level determination is improved as compared to the prior art by the conductor unit (1) being supplied with transmission signals with either positive or negative polarity.Type: GrantFiled: October 14, 2015Date of Patent: May 8, 2018Assignee: KROHNE S.A.S.Inventors: Michael Gerding, Vincent Pichot
-
Publication number: 20170328762Abstract: A level meter and a method for monitoring the level meter operating according to the radar principle, in which a signal conductor is lead out of an inner space of a leakage chamber of a bracket housing through a process-side opening of the leakage chamber and/or of the bracket housing into the process-side outer space of the bracket housing. The method involves transmitting a signal in the form of a pulse along the signal conductor, receiving a reflected received signal, relaying the received signal to the control and evaluation unit. In addition to the simple verification of the presence of a leak, a change in the received signal can also be quantified by the frequency spectrum of the received signal being determined and monitoring of the level meter carried out in the frequency domain.Type: ApplicationFiled: May 10, 2017Publication date: November 16, 2017Applicant: KROHNE S.A.S.Inventors: Vincent PICHOT, Mahmoud Khodjet KESBA
-
Publication number: 20170211964Abstract: A measuring device for measuring a measured variable with a sensor device (2) and an output device, which generates at least one output signal based on at least one sensor signal of the sensor device (2). To provide a measuring device that is flexible in terms of signal output, the output device has at least two signal outlets (4, 5) for outputting of the at least one output signal.Type: ApplicationFiled: January 23, 2017Publication date: July 27, 2017Applicant: KROHNE S.A.S.Inventors: Vincent Milhaud, Denis Graillat, Vincent Pichot
-
Patent number: 9698456Abstract: A fill level measuring device (3) operating with the transit time method and a termination element (1) for a waveguide (2) of the fill level measuring device (3) has a carrier element (13) that is arranged between a first cylinder element (11) and a second cylinder element (12) and has an impedance-matching component (15) that is arranged on the carrier element (13).Type: GrantFiled: May 22, 2015Date of Patent: July 4, 2017Assignee: Krohne S.A.S.Inventor: Vincent Pichot
-
Publication number: 20170089747Abstract: A probe holder for a fill level measuring device operating with the radar principle has a holder housing, a signal conductor for guiding emitted and/or received signals and a spacer. The signal conductor is led out of the interior space of the holder housing through an opening of the holder housing into a process side exterior space of the holder housing. The spacer is arranged in the opening of the holder housing and keeps the signal conductor spaced from the holder housing in the opening. The probe holder realizes a seal relative to the process area in a simple, but effective manner in that the spacer is held in the holder housing by a shrink-fit so that a sealed closure is created between the holder housing and the spacer in the shrunken-in state.Type: ApplicationFiled: September 23, 2016Publication date: March 30, 2017Applicant: KROHNE S.A.S.Inventors: Vincent Pichot, Laurent Peigat
-
Publication number: 20160245685Abstract: A method and device for level measurement according to the propagation time method in which at least one conductor unit (1) is supplied with pulse-like electromagnetic transmission signals and in which electromagnetic response signals are tapped from the conductor unit (1). The method for level determination is improved as compared to the prior art by the conductor unit (1) being supplied with transmission signals with either positive or negative polarity.Type: ApplicationFiled: October 14, 2015Publication date: August 25, 2016Applicant: KROHNE S.A.S.Inventors: Michael Gerding, Vincent Pichot
-
Publication number: 20150340750Abstract: A fill level measuring device (3) operating with the transit time method and a termination element (1) for a waveguide (2) of the fill level measuring device (3) has a carrier element (13) that is arranged between a first cylinder element (11) and a second cylinder element (12) and has an impedance-matching component (15) that is arranged on the carrier element (13).Type: ApplicationFiled: May 22, 2015Publication date: November 26, 2015Applicant: KROHNE S.A.S.Inventor: Vincent Pichot