Patents by Inventor Christian Matt
Christian Matt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090277278Abstract: A measuring device includes: a measuring transducer accommodated, at least partially, in a housing, for registering at least one, measured variable; and a measuring device electronics electrically connected, at least at times, with the measuring transducer. The measuring device electronics includes at least one measurement channel for registering and further processing at least one primary signal generated by means of the measuring transducer, and an electrical current measuring circuit for registering measuring-device-internally flowing, electrical currents.Type: ApplicationFiled: April 30, 2009Publication date: November 12, 2009Applicant: Endress + Hauser Flowtec AgInventors: Ole Koudal, Christian Matt, Gernot Engstler, Hans Pohl
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Publication number: 20090211373Abstract: To ascertain the mass-flow of a Coriolis mass-flow meter, an oscillation of a measuring tube is produced with the frequency f and the resulting oscillatory movement is registered at two different measuring points with two oscillation sensors. The analog sensor signals X17, X18 of the two oscillation sensors are converted into digital sensor signals S1 and S2 and further processed in a digital signal processor DSP. In the signal processor DSP, the sum signal ? and the difference signal ? are formed from the two sensor signals S1 and S2. Then the sum signal is rotated by 90°. In a further method step, the shifted sum signal is multiplied with the difference signal ?. After ascertaining the amplitude of the sum signal ?, the mass-flow is ascertained using the formula {dot over (m)}˜|Im(?)|/(|?|f). It is not necessary for the method, that the two sensor signals S1, S2 have equal amplitudes. Thus, a controlling of the analog signals X17, X18 to equal amplitudes can be omitted.Type: ApplicationFiled: November 21, 2005Publication date: August 27, 2009Inventor: Christian Matt
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Patent number: 7520162Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.Type: GrantFiled: March 7, 2006Date of Patent: April 21, 2009Assignee: Endress + Hauser Flowtec AGInventors: Alfred Wenger, Michael Fuchs, Christian Matt, Wolfgang Drahm
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Measuring and operational circuit for a coriolis-mass flow meter comprising three measuring channels
Patent number: 7469600Abstract: In a method for determining mass-flow with the aid of a Coriolis mass-flow meter in which mass-flow ({dot over (m)}) is won from the phase difference of two sensor signals X17, X18, three measuring channels K1, K2, K3 are provided for the two sensor signals X17, X18. By selective switching of the sensor signals X17, X18 onto the measuring channels K1, K2, K3, phase error caused by the different signal paths can be determined and taken into consideration when calculating mass-flow ({dot over (m)}).Type: GrantFiled: November 2, 2005Date of Patent: December 30, 2008Assignee: Endress + Hauser GmbH + Co. KGInventors: Christian Matt, Philipp Alber -
Measuring and Operational Circuit For a Coriolis-Mass Flow Meter Comprising Three Measuring Channels
Publication number: 20080156108Abstract: In a method for determining mass-flow with the aid of a Coriolis mass-flow meter in which mass-flow ({dot over (m)}) is won from the phase difference of two sensor signals X17, X18, three measuring channels K1, K2, K3 are provided for the two sensor signals X17, X18. By selective switching of the sensor signals X17, X18 onto the measuring channels K1, K2, K3, phase error caused by the different signal paths can be determined and taken into consideration when calculating mass-flow ({dot over (m)}).Type: ApplicationFiled: November 2, 2005Publication date: July 3, 2008Applicant: Endress + Hauser Flowtec AGInventors: Christian Matt, Philipp Alber -
Publication number: 20080127719Abstract: The viscometer comprises a vibratory transducer with at least one flow tube for conducting a fluid to be measured and for producing friction forces acting in the fluid. To vibrate the at least one flow tube, an excitation assembly is provided, which in operation is traversed by an excitation current. To generate the excitation current and a viscosity value representing the viscosity of the fluid, the viscometer includes meter electronics which are connected to, and supplied with electric power from, a two-wire process control loop. The meter electronics feed a viscosity signal corresponding to the measured viscosity value into the two-wire process control loop. The viscometer is suitable for measuring a fluid flowing in a pipe, particularly in potentially explosive atmospheres.Type: ApplicationFiled: June 19, 2002Publication date: June 5, 2008Inventors: Wolfgang Drahm, Alfred Rieder, Christian Matt
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Patent number: 7345581Abstract: An apparatus for monitoring a measurement transmitter of a field device determining and/or monitoring a physical and/or chemical process parameter, wherein at least one sensor is provided inside the a housing, in which the transmitter is arranged. The sensor determines the temperature and relative humidity in the housing over a period of time in predetermined intervals, and a control-/evaluation-unit is provided, which, on the basis of the measured temperature and relative humidity, determines the absolute humidity and/or the dewpoint in the housing of the transmitter, and issues and alarm when the absolute humidity and/or the dewpoint in the housing of the transmitter reaches a critical value.Type: GrantFiled: April 2, 2004Date of Patent: March 18, 2008Assignee: Endress + Hauser Flowtec AGInventor: Christian Matt
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Patent number: 7325461Abstract: The measurement transducer includes at least two oscillatably held transducer tubes vibrating, at least at times, during operation, of which at least one transducer tube serving to convey at least a volume portion of a medium to be measured, communicates with a pipeline; as well as at least one transducer element for converting electrical energy into mechanical and/or vice versa. The two transducer tubes are mechanically coupled together by means of at least one, inlet-side, coupling element and by means of at least one, outlet-side, coupling element in such a manner that both the inlet-side coupling element, as well as also the outlet-side coupling element, are subjected during operation repeatedly to deformations which correspond to vibrations of at least one of the two transducer tubes for converting electrical energy into mechanical, oscillatory energy and/or vice versa.Type: GrantFiled: December 6, 2006Date of Patent: February 5, 2008Assignee: Endress + Hauser Flowtec AGInventors: Ennio Bitto, Gerhard Eckert, Sergej Lopatin, Christian Matt, Helmut Pfeiffer, Alfred Rieder, Martin Anklin-Imhof, Martin Stucki
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Patent number: 7289917Abstract: A Coriolis flow meter, which includes: at least one measuring tube, which is excited to oscillate during measurement operation, and through which a medium flows, first and second sensors for registering a flow-dependent oscillation of the measuring tube and for producing first and second sensor signals; and two separated, signal-processing branches. According to a method of flow measurement a reference signal is superimposed on the first or second of the sensor signals, by the passing through both signal processing branches of an auxiliary signal formed by the superimposing, and by the filtering of a first, conditioned, reference signal from a first signal occurring on the output of the first signal processing branch and the filtering of a second, conditioned, reference signal from a second signal occurring on the output of the second signal processing branch, and by determining a ratio of the amplification gains of the signal processing branches on the basis of the conditioned, reference signals.Type: GrantFiled: May 31, 2006Date of Patent: October 30, 2007Assignee: Endress +Hasuer Flowtec AGInventors: Daniel Kuttler, Christian Matt
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Publication number: 20070151369Abstract: The measurement transducer includes at least two oscillatably held transducer tubes vibrating, at least at times, during operation, of which at least one transducer tube serving to convey at least a volume portion of a medium to be measured, communicates with a pipeline; as well as at least one transducer element for converting electrical energy into mechanical and/or vice versa. The two transducer tubes are mechanically coupled together by means of at least one, inlet-side, coupling element and by means of at least one, outlet-side, coupling element in such a manner that both the inlet-side coupling element, as well as also the outlet-side coupling element, are subjected during operation repeatedly to deformations which correspond to vibrations of at least one of the two transducer tubes for converting electrical energy into mechanical, oscillatory energy and/or vice versa.Type: ApplicationFiled: December 6, 2006Publication date: July 5, 2007Applicant: Endress + Hauser Flowtec AGInventors: Ennio Bitto, Gerhard Eckert, Sergej Lopatin, Christian Matt, Helmut Pfeiffer, Alfred Rieder, Martin Anklin-Imhof, Martin Stucki
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Publication number: 20070062260Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals. representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.Type: ApplicationFiled: March 7, 2006Publication date: March 22, 2007Inventors: Alfred Wenger, Michael Fuchs, Christian Matt, Wolfgang Drahm
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Patent number: 7191667Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.Type: GrantFiled: September 5, 2003Date of Patent: March 20, 2007Assignee: Endress + Hauser Flowtec AGInventors: Alfred Wenger, Michael Fuchs, Christian Matt, Wolfgang Drahm
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Patent number: 7188035Abstract: In a Coriolis mass flow meter for determining the concentration of a flowing fluid, a concentration function is stored in a concentration evaluating unit. This enables the user to produce a concentration value at given temperature and density of the medium appropriate for a given application.Type: GrantFiled: February 26, 2003Date of Patent: March 6, 2007Assignee: Endress + Hauser Flowtec AGInventor: Christian Matt
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Publication number: 20060278020Abstract: A Coriolis flow meter, which includes: at least one measuring tube, which is excited to oscillate during measurement operation, and through which a medium flows, whose flow is to be measured; first and second sensors for registering a flow-dependent oscillation of the measuring tube and for producing first and second sensor signals; and two separated, signal-processing branches. A method of flow measurement is also contemplated.Type: ApplicationFiled: May 31, 2006Publication date: December 14, 2006Applicant: Endress + Hauser Flowtec AGInventors: Daniel Kuttler, Christian Matt
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Patent number: 7040180Abstract: A Coriolis mass-flow/density meter includes at least one measuring tube, which is traversed in operation by medium. A support structure of the Coriolis mass-flow/density meter is fixed at an inlet end and at an outlet end of the measuring tube and thus clamps the measuring tube such that it can oscillate. In operation, the measuring tube is caused by means of an exciter arrangement to oscillate with mechanical oscillations, especially bending oscillations. Furthermore, the Coriolis mass-flow/density meter includes structure for producing measurement signals (xs1, xs2) representing inlet-end and outlet-end oscillations of the measuring tube. An evaluation electronics produces an intermediate value (X?m) derived from the measurement signals (xs1, xs2) and representing an uncorrected mass flow rate. The evaluation electronics also produces a correction value (XK) for the intermediate value (X?m).Type: GrantFiled: December 7, 2004Date of Patent: May 9, 2006Assignee: Endress + Hauser Flowtec AGInventors: Christian Matt, Ida Vercna Kobel Wenger, legal representative, Michael Fuchs, Wolfgang Drahm, Alfred Wenger, deceased
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Publication number: 20060010990Abstract: The Coriolis mass-flow/density meter includes at least one measuring tube (11), which is traversed in operation by the medium. A support means (12) of the Coriolis mass-flow/density meter is fixed at an inlet end and at an outlet end of the measuring tube 11 and thus clamps the measuring tube such that it can oscillate. In operation, the measuring tube (11) is caused by means of an exciter arrangement (13) to oscillate with mechanical oscillations, especially bending oscillations. Furthermore, the Coriolis mass-flow/density meter includes means (141, 142) for producing measurement signals (xs1, xs2) representing inlet-end and outlet-end oscillations of the measuring tube (11). An evaluation electronics (2) produces an intermediate value (X?m) derived from the measurement signals (xs1, xs2) and representing an uncorrected mass flow rate. The evaluation electronics also produces a correction value (XK) for the intermediate value (X?m).Type: ApplicationFiled: December 7, 2004Publication date: January 19, 2006Applicant: Endress + Hauser Flowtec AGInventors: Christian Matt, Alfred Wenger, Ida Vercna Wenger, Michael Fuchs, Wolfgang Drahm
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Publication number: 20050247116Abstract: A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.Type: ApplicationFiled: September 5, 2003Publication date: November 10, 2005Inventors: Alfred Wenger, Michael Fuchs, Christian Matt, Wolfgang Drahm
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Publication number: 20050228598Abstract: In a Coriolis mass flow meter for determining the concentration of a flowing fluid, a concentration function is stored in a concentration evaluating unit. This enables the user to produce a concentration value at given temperature and density of the medium appropriate for a given application.Type: ApplicationFiled: February 26, 2003Publication date: October 13, 2005Inventor: Christian Matt
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Publication number: 20050035867Abstract: An apparatus for monitoring a measurement transmitter of a field device determining and/or monitoring a physical and/or chemical process parameter, wherein at least one sensor is provided inside a housing, in which the transmitter is arranged. The sensor determines the temperature and relative humidity in the housing over a period of time in predetermined intervals, and a control-/evaluation-unit is provided, which, on the basis of the measured temperature and relative humidity, determines the absolute humidity and/or the dewpoint in the housing of the transmitter, and issues and alarm when the absolute humidity and/or the dewpoint in the housing of the transmitter reaches a critical value.Type: ApplicationFiled: April 2, 2004Publication date: February 17, 2005Inventor: Christian Matt
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Patent number: 6834557Abstract: According to the invention, a digital processor (DSP) is provided in a measuring and operating circuit for a Coriolis-type mass flowmeter. From the vibration sensor signals, said digital processor evaluates only the differential signal (D) and the one sensor signal (S1). The in-phase component (I) and the quadrature components (Q) are determined for the differential signal (D), and the amplification of the second sensor signal (S2) is controlled in such a manner that the in-phase component (I) vanishes. The mass flow rate (m) is determined from the quadrature component (Q).Type: GrantFiled: June 26, 2003Date of Patent: December 28, 2004Assignee: Endress + Hauser Flowtec AGInventor: Christian Matt