Patents by Inventor David E. Wiklund
David E. Wiklund 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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Patent number: 8849589Abstract: A process fluid flow device includes a power supply module, a process communication module, a processor and measurement circuitry. The process communication circuitry is coupled to the power supply module and to the processor. The measurement circuitry is operably coupleable to plurality of process variable sensors to obtain an indication of differential pressure, static pressure and process fluid temperature. The processor is configured to compute process fluid mass flow, and to use the static pressure and process fluid temperature to obtain an energy per unit mass value relative to the process fluid and to provide an energy flow indication.Type: GrantFiled: May 22, 2009Date of Patent: September 30, 2014Assignee: Rosemount Inc.Inventors: David E. Wiklund, Lowell A. Kleven
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Patent number: 8655604Abstract: A process fluid flow device includes process communication circuitry, a processor, and measurement circuitry. The process communication circuitry is configured to communicate with at least one additional process device. The processor is coupled to the process communication circuitry and is configured to execute instructions to provide a plurality of cycles, wherein each cycle includes a number of flow-related calculations. Measurement circuitry is operably coupleable to a plurality of process variable sensors to obtain an indication of differential pressure during each cycle, and to obtain static pressure, and process fluid temperature. The processor is configured to compute a process fluid flow value using a current differential pressure sensor indication and at least one flow-related value calculated during a previous cycle. The process communication circuitry communicates the computed process fluid flow value to the at least one additional process device.Type: GrantFiled: October 27, 2009Date of Patent: February 18, 2014Assignee: Rosemount Inc.Inventors: Lowell A. Kleven, David E. Wiklund
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Patent number: 8175754Abstract: A method of providing configuration information for a process fluid flow device is provided. The method includes receiving a process fluid selection and providing at least one selectable fluid property relative to the selected process fluid and receiving at least one process fluid property selection. Information relative to a primary element is also received. Reception of a reset relative to the process fluid selection, the process fluid property, and the primary element selection, clears the respective information. The configuration information is provided to a process fluid flow device based on the process fluid selection, the process fluid property and the primary element information.Type: GrantFiled: May 22, 2009Date of Patent: May 8, 2012Assignee: Rosemount Inc.Inventor: David E. Wiklund
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Patent number: 7949495Abstract: A process variable transmitter with diagnostics based on power spectral density (PSD) analysis of a process variable sensor signal is provided. In one embodiment, the process variable transmitter is a pressure transmitter and the diagnostics are used to diagnose impulse line obstruction or impending obstruction. Other diagnostics are also useful such as diagnosing primary element degradation. The sensor signal is digitized and the digitized signal is transferred into the frequency domain. The power of the frequencies on the sensor signal is examined to provide the enhanced diagnostics. In one aspect diagnostics are generated directly with the sensor PSD data. In another aspect, the PSD analysis is used to tune a filter in order to enhance traditional diagnostic algorithms.Type: GrantFiled: August 17, 2005Date of Patent: May 24, 2011Assignee: Rosemount, Inc.Inventors: David E. Wiklund, Kadir Kavaklioglu, John P. Miller, Ross C. Lamothe, Evren Eryurek
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Publication number: 20100106433Abstract: A process fluid flow device includes process communication circuitry, a processor, and measurement circuitry. The process communication circuitry is configured to communicate with at least one additional process device. The processor is coupled to the process communication circuitry and is configured to execute instructions to provide a plurality of cycles, wherein each cycle includes a number of flow-related calculations. Measurement circuitry is operably coupleable to a plurality of process variable sensors to obtain an indication of differential pressure during each cycle, and to obtain static pressure, and process fluid temperature. The processor is configured to compute a process fluid flow value using a current differential pressure sensor indication and at least one flow-related value calculated during a previous cycle. The process communication circuitry communicates the computed process fluid flow value to the at least one additional process device.Type: ApplicationFiled: October 27, 2009Publication date: April 29, 2010Inventors: Lowell A. Kleven, David E. Wiklund
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Publication number: 20090292484Abstract: A process fluid flow device includes a power supply module, a process communication module, a processor and measurement circuitry. The process communication circuitry is coupled to the power supply module and to the processor. The measurement circuitry is operably coupleable to plurality of process variable sensors to obtain an indication of differential pressure, static pressure and process fluid temperature. The processor is configured to compute process fluid mass flow, and to use the static pressure and process fluid temperature to obtain an energy per unit mass value relative to the process fluid and to provide an energy flow indication.Type: ApplicationFiled: May 22, 2009Publication date: November 26, 2009Inventors: David E. Wiklund, Lowell A. Kleven
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Publication number: 20090292400Abstract: A method of providing configuration information for a process fluid flow device is provided. The method includes receiving a process fluid selection and providing at least one selectable fluid property relative to the selected process fluid and receiving at least one process fluid property selection. Information relative to a primary element is also received. Reception of a reset relative to the process fluid selection, the process fluid property, and the primary element selection, clears the respective information. The configuration information is provided to a process fluid flow device based on the process fluid selection, the process fluid property and the primary element information.Type: ApplicationFiled: May 22, 2009Publication date: November 26, 2009Inventor: David E. Wiklund
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Patent number: 6848323Abstract: A method and device for use with a hydraulic system is adapted to measure a position, velocity and/or acceleration of a piston of a hydraulic actuator based upon differential pressure measurement. The device of the present invention utilizes a differential pressure flow sensor to establish a flow rate of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator, from which the position, velocity and acceleration of the piston can be determined.Type: GrantFiled: December 12, 2002Date of Patent: February 1, 2005Assignee: Rosemount Inc.Inventors: Terrance F. Krouth, David E. Wiklund, Richard J. Habegger, Richard R. Hineman
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Patent number: 6843139Abstract: An instrument used to control fluid flow. The instrument has a flow restrictor between an inlet and an outlet. First and second multisensor have sensing surfaces in the inlet and outlet that sense pressures and temperatures of the fluid flow. A circuit generates a mass flow output based on a difference between the pressure in the inlet and the pressure in the outlet. The mass flow output including a temperature correction as a function of at least one of the sensed temperatures in the inlet and outlet.Type: GrantFiled: March 12, 2003Date of Patent: January 18, 2005Assignee: Rosemount Inc.Inventors: Mark S. Schumacher, David A. Broden, David E. Wiklund
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Patent number: 6817252Abstract: A measuring device is provided for determining a position of a piston contained within a hydraulic actuator as a function of a hydraulic fluid flow. The measuring device includes a bi-directional flow sensor positioned inline with the hydraulic fluid flow and a piston position module. The flow sensor is configured to produce a flow rate signal that is indicative flow rate of the hydraulic fluid flow into and out of a first cavity. The piston position module is configured to receive the flow rate signal from the flow sensor and produce a piston position signal that is indicative of the position of the piston within the hydraulic actuator as a function of the flow rate signal.Type: GrantFiled: December 12, 2002Date of Patent: November 16, 2004Assignee: Rosemount Inc.Inventors: David E. Wiklund, Terrance F. Krouth, Richard J. Habegger, Richard R. Hineman
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Publication number: 20040177703Abstract: An instrument used to control fluid flow. The instrument has a flow restrictor between an inlet and an outlet. First and second multisensor have sensing surfaces in the inlet and outlet that sense pressures and temperatures of the fluid flow. A circuit generates a mass flow output based on a difference between the pressure in the inlet and the pressure in the outlet. The mass flow output including a temperature correction as a function of at least one of the sensed temperatures in the inlet and outlet.Type: ApplicationFiled: March 12, 2003Publication date: September 16, 2004Inventors: Mark S. Schumacher, David A. Broden, David E. Wiklund
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Patent number: 6789458Abstract: A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.Type: GrantFiled: December 12, 2002Date of Patent: September 14, 2004Assignee: Rosemount Inc.Inventors: Mark S. Schumacher, Terrance F. Krouth, David E. Wiklund, Richard J. Habegger, Richard R. Hineman
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Patent number: 6725731Abstract: Disclosed is a bi-directional differential pressure flow sensor that is configured to establish a direction and flow rate of a fluid flow. The flow sensor includes a flow restriction member, a differential pressure sensor, and processing electronics. The flow restriction member is configured to produce a pressure drop when placed inline with the fluid flow. The differential pressure sensor is embedded or integral with the flow restriction member and produces a differential pressure signal that is indicative of the pressure drop. The processing electronics produces a flow rate signal that is indicative of the direction and flow rate of the fluid flow as a function of the differential pressure signal.Type: GrantFiled: November 6, 2002Date of Patent: April 27, 2004Assignee: Rosemount Inc.Inventors: David E. Wiklund, Terrance F. Krouth, David A. Broden, Mark S. Schumacher
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Publication number: 20030136196Abstract: Disclosed is a bi-directional differential pressure flow sensor that is configured to establish a direction and flow rate of a fluid flow. The flow sensor includes a flow restriction member, a differential pressure sensor, and processing electronics. The flow restriction member is configured to produce a pressure drop when placed inline with the fluid flow. The differential pressure sensor is embedded or integral with the flow restriction member and produces a differential pressure signal that is indicative of the pressure drop. The processing electronics produces a flow rate signal that is indicative of the direction and flow rate of the fluid flow as a function of the differential pressure signal.Type: ApplicationFiled: November 6, 2002Publication date: July 24, 2003Inventors: David E. Wiklund, Terrance F. Krouth, David A. Broden, Mark S. Schumacher
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Publication number: 20030106381Abstract: A method and device for use with a hydraulic system is adapted to measure a position, velocity and/or acceleration of a piston of a hydraulic actuator based upon differential pressure measurement. The device of the present invention utilizes a differential pressure flow sensor to establish a flow rate of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator, from which the position, velocity and acceleration of the piston can be determined.Type: ApplicationFiled: December 12, 2002Publication date: June 12, 2003Inventors: Terrance F. Krouth, David E. Wiklund, Richard J. Habegger, Richard R. Hineman
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Publication number: 20030084719Abstract: A measuring device is provided for determining a position of a piston contained within a hydraulic actuator as a function of a hydraulic fluid flow. The measuring device includes a bi-directional flow sensor positioned inline with the hydraulic fluid flow and a piston position module. The flow sensor is configured to produce a flow rate signal that is indicative flow rate of the hydraulic fluid flow into and out of a first cavity. The piston position module is configured to receive the flow rate signal from the flow sensor and produce a piston position signal that is indicative of the position of the piston within the hydraulic actuator as a function of the flow rate signal.Type: ApplicationFiled: December 12, 2002Publication date: May 8, 2003Inventors: David E. Wiklund, Terrance F. Krouth, Richard J. Habegger, Richard R. Hineman
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Publication number: 20030079603Abstract: A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.Type: ApplicationFiled: December 12, 2002Publication date: May 1, 2003Inventors: Mark S. Schumacher, Terrance F. Krouth, David E. Wiklund, Richard J. Habegger, Richard R. Hineman
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Patent number: 6484590Abstract: A method for measuring fluid flow includes generating vortices in a fluid and relating the fluid flow to a first set of fluid parameters to obtain a first relationship, and relating the fluid flow to a second set of fluid parameters to obtain a second relationship. The first and second sets of fluid parameters are monitored. A first flow value is calculated from the first set of monitor fluid parameters and the first relationship. The second relationship is adjusted based on the first flow value. The output value is calculated from the second set of monitored fluid parameters and the adjusted second relationship.Type: GrantFiled: September 21, 1999Date of Patent: November 26, 2002Assignee: Rosemount Inc.Inventors: Lowell A. Kleven, Robert C. Hedtke, David E. Wiklund
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Patent number: 6412353Abstract: A vortex sensor senses the vortices generated by a vortex generator. A temperature sensor, disposed at a streamlined body within a flow tube, measures a temperature of fluid carried by the flow tube. A circuit coupled to the vortex sensor and to the temperature sensor creates an output indicative of the flow.Type: GrantFiled: September 21, 1999Date of Patent: July 2, 2002Assignee: Rosemount Inc.Inventors: Lowell A. Kleven, Robert C. Hedtke, David E. Wiklund
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Publication number: 20010037689Abstract: A method and device for use with a hydraulic system is adapted to measure a position, velocity and/or acceleration of a piston of a hydraulic actuator based upon differential pressure measurement. The device of the present invention utilizes a differential pressure flow sensor to establish a flow rate of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator, from which the position, velocity and acceleration of the piston can be determined.Type: ApplicationFiled: March 7, 2001Publication date: November 8, 2001Inventors: Terrance F. Krouth, David E. Wiklund