Patents Assigned to Endress + Hauser Messtechnik GmbH + Co. KG
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Patent number: 10539930Abstract: A method of determining a calibration or maintenance time interval, comprising the steps of: determining a criticality of the specific device, based on the criticality setting a reliability target for the device, wherein the reliability target denominates the probability of the device to be compliant according to a predefined criterion at the end of the calibration or maintenance time interval; defining compliancy ranges for a measurable degree of compliance of the device; selecting a reliability model for a reliability of the device as a function of a normalized time interval and a set of at least one parameter from a variety of predefined reliability models, determining a separate set of parameters for the selected reliability model for each of the compliancy ranges based on prescribed reliability expectation values for each of the error ranges, which a reliability function associated with this error range shall comply to at at least one predefined normalized time, determining the degree of compliance of thType: GrantFiled: April 8, 2014Date of Patent: January 21, 2020Assignee: ENDRESS + HAUSER MESSTECHNIK GMBH + CO. KGInventor: Dimitri Vaissiere
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Publication number: 20170261972Abstract: Monitoring structure and a monitoring method for monitoring at least one step of a process performed on an industrial site is described, which allows prompt, reliable and efficient detection of disturbances based on readily available information, provided by the measurement results of the measurement devices involved in the performance of the step, and determined based on a model of the step, comprising primary models for the measurement devices comprising a basic function representing a time dependency of the measurement results of the device, a first property determined by best fitting the basic function to the measurement results obtained by the respective measurement device, a secondary model for each of the primary models, each comprising a second property given by a dispersion of residues between the measurement results obtained by the respective measurement device and the corresponding fitted function, and tertiary models for those pairs of measurement devices, which render correlated measurement resulType: ApplicationFiled: August 19, 2015Publication date: September 14, 2017Applicant: Endress + Hauser Messtechnik GmbH + Co., KGInventors: Dimitri Vaissiere, Markus Nick
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Patent number: 9410865Abstract: A system for monitoring the leak-tightness of a tank, which is filled with a liquid with a lower density than water. The system has a liquid drain pipe, with a container that has a bottom, which is integrated horizontally in the liquid drain pipe with a damming element, which divides the container into a partial area on the supply flow side and partial area on the drain side. A first vibronic measuring device with a first vibrating unit protruding into the supply flow side partial area of the bottom determines whether the density of the medium undershoots a specified limit. A second vibronic measuring device with a second vibrating unit, at a position not exceeding the level of the first vibrating unit, which detects whether the vibrating unit are covered with medium, and with an evaluation unit uses the measured values of measuring devices to determine whether there is liquid from the tank in the container.Type: GrantFiled: December 8, 2011Date of Patent: August 9, 2016Assignee: ENDRESS + HAUSER MESSTECHNIK GMBH + CO. KGInventors: Thomas Fritz, Thorsten Springmann, Dirk Misselwitz
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Patent number: 9354091Abstract: A method of determining a calibration time interval for a calibration of a measurement device for measuring a quantity to be measured, which allows a safe optimization of calibration time intervals between consecutive calibrations.Type: GrantFiled: November 22, 2012Date of Patent: May 31, 2016Assignee: ENDRESS + HAUSER MESSTECHNIK GMBH + CO. KGInventor: Dimitri Vaissiere
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Publication number: 20140338420Abstract: A method of determining a calibration or maintenance time interval, comprising the steps of: determining a criticality of the specific device, based on the criticality setting a reliability target for the device, wherein the reliability target denominates the probability of the device to be compliant according to a predefined criterion at the end of the calibration or maintenance time interval; defining compliancy ranges for a measurable degree of compliance of the device; selecting a reliability model for a reliability of the device as a function of a normalized time interval and a set of at least one parameter from a variety of predefined reliability models, determining a separate set of parameters for the selected reliability model for each of the compliancy ranges based on prescribed reliability expectation values for each of the error ranges, which a reliability function associated with this error range shall comply to at at least one predefined normalized time, determining the degree of compliance of thType: ApplicationFiled: April 8, 2014Publication date: November 20, 2014Applicant: Endress + Hauser Messtechnik GmbH + Co. KGInventor: Dimitri Vaissiere
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Publication number: 20130263666Abstract: A system for monitoring the leak-tightness of a tank, which is filled with a liquid with a lower density than water. The system has a liquid drain pipe, with a container that has a bottom, which is integrated horizontally in the liquid drain pipe with a damming element, which divides the container into a partial area on the supply flow side and partial area on the drain side. A first vibronic measuring device with a first vibrating unit protruding into the supply flow side partial area of the bottom determines whether the density of the medium undershoots a specified limit. A second vibronic measuring device with a second vibrating unit, at a position not exceeding the level of the first vibrating unit, which detects whether the vibrating unit are covered with medium, and with an evaluation unit uses the measured values of measuring devices to determine whether there is liquid from the tank in the container.Type: ApplicationFiled: December 8, 2011Publication date: October 10, 2013Applicant: Endress + Hauser Messtechnik GmbH + Co. KGInventors: Thomas Fritz, Thorsten Springmann, Dirk Misselwitz
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Publication number: 20130030746Abstract: A method of calibrating a measurement device, during which at least one given value of a quantity to be measured by the device is provided by a corresponding reference or standard. The indicated measurement indications and the corresponding given values of the measured quantity are recorded, at least one predefined characteristic property of at least one of the measurement indications is determined and compared to corresponding threshold range. Each threshold range was previously determined based on a statistically representative distribution of the values of the respective property determined based on measurement indications derived during execution of a statistically representative number of performances of measurements according to the respective operation procedure with measurement devices of the same type as the device under calibration.Type: ApplicationFiled: July 26, 2012Publication date: January 31, 2013Applicant: Endress + Hauser Messtechnik GmbH + Co. KGInventor: Dimitri Vaissiere