Wade M Mattar

6386046, May 14, 2002

Sep 28, 1999

09/406873

Wade Mattar - Wrentham MA

The Foxboro Company - Foxboro MA

G01F 132

7386122

A method for determining the pulsatile flow characteristics in fluid flow driven by a periodic pressure disturbance includes the step of evaluating the spectrum of a signal representative of the vortices generated by a vortex flowmeter. Because of the periodic pressure disturbance, the signal is an FM signal in which a carrier, having a frequency corresponding to the vortex-shedding frequency in the absence of pulsating flow, is modulated by the periodic pressure disturbance. The pulsation frequency and amplitude are then estimated on the basis of the separation between adjacent sidebands of the spectrum of the FM signal and the relative amplitudes of the sidebands.

6895813, May 24, 2005

Oct 9, 2002

10/359469

Wade M. Mattar - Wrentham MA, US

Fox Boro Company - Fox Boro MA

G01F007/00

73197

A method and apparatus for measuring flow rates is disclosed. At least one of a non-vortex based low-flow measurement and a vortex based flow measurement is taken. The measurement or measurements are communicated to a central processor. The processor analyzes the data provided and makes a determination as to the more accurate measurement, if there is more than one measurement. The flow rate is calculated by the processor and is based on either the singular or the more accurate measurement. Further enhancements include diagnosis of meter performance, redundancy of measurements, and re-calibration of either measurement device based on information from the other device.

6997032, Feb 14, 2006

Dec 9, 2003

10/729990

Wade M. Mattar - Wrentham MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/84

73 134, 73 116

Descriptions are provided for implementing flowmeter zeroing techniques. In operating a flowmeter, it may be the case that, if not properly calibrated, the flowmeter will produce erroneous measurements, e. g. , will indicate a non-zero flow during a period of zero flow. By determining a magnitude of such erroneous measurements, calibration values may be determined, which may later be used to adjust a measurement that is output by the flowmeter and thereby improve an accuracy of the flowmeter. Such calibration values may be determined for a plurality of operational conditions associated with the flowmeter, such as densities of materials being measured, and/or configurations of flow elements associated with transporting material to the flowmeter. Then, the calibration values may be correlated with the relevant operational conditions, and stored for later use. In this way, during an actual operation of the flowmeter, a number of calibration values may be made available, and an optimal calibration value may be selected for an existing operational condition of the flowmeter.

7013740, Mar 21, 2006

Dec 18, 2003

10/737856

Robert E. Dutton - Louisville CO, US
Wade M. Mattar - Wrentham MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/84

73861354

A steam measurement system includes a Coriolis flowmeter associated with a vibratable flowtube to receive a flow of wet steam. A first sensor is associated with the flowtube to relay information about a motion of the flowtube by way of a first sensor signal. A second sensor determines a property of the flow and relays the property by way of a second sensor signal. A computing device receives the first and second sensor signals and is configured to calculate a steam quality of the flow from the first and second sensor signals. The computing device also may calculate the total heat energy flow rate of the flow. Other implementations may include a full or partial separator to separate the flow of wet steam into a substantially gas flow and a substantially liquid flow and a second Coriolis meter.

7059199, Jun 13, 2006

Feb 9, 2004

10/773459

Wade M. Mattar - Wrentham MA, US
Manus P. Henry - Oxford, GB
Mihaela D. Duta - Oxford, GB
Michael S. Tombs - Oxford, GB

Invensys Systems, Inc. - Foxboro MA

G01F 1/78

73861356

A flowmeter is disclosed. The flowmeter includes a vibratable flowtube, and a driver connected to the flowtube that is operable to impart motion to the flowtube. A sensor is connected to the flowtube and is operable to sense the motion of the flowtube and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to determine a first flow rate of a first phase within a two-phase flow through the flowtube and determine a second flow rate of a second phase within the two-phase flow.

7117717, Oct 10, 2006

Dec 13, 2004

11/009511

Wade M. Mattar - Wrentham MA, US
James H. Vignos - Needham Heights MA, US

Invensys Systems, Inc. - Foxboro MA

G01N 9/00
G01N 7/00
G01N 29/00

73 1903, 73 32 A, 73 6147, 73 6178, 73 6179

Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which causes a density of the fluid also to oscillate according to the same time-varying function. A resulting pressure signal and density signal are analyzed to extract at least a first and second pressure value and at least a first and second density value, where the first pressure and density values occur at a first time, and the second pressure and density values occur at a second time. Then, the liquid density is calculated from the first and second pressure and density values. As a result, the liquid density may be calculated quickly and easily, with a minimum of effort on the part of an operator, and without requiring disruption of other measurement processes associated with the flowtube.

7185526, Mar 6, 2007

Dec 16, 2005

11/304698

Wade M. Mattar - Wrentham MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/84

73 134

Descriptions are provided for implementing flowmeter zeroing techniques. In operating a flowmeter, it may be the case that, if not properly calibrated, the flowmeter will produce erroneous measurements, e. g. , will indicate a non-zero flow during a period of zero flow. By determining a magnitude of such erroneous measurements, calibration values may be determined, which may later be used to adjust a measurement that is output by the flowmeter and thereby improve an accuracy of the flowmeter. Such calibration values may be determined for a plurality of operational conditions associated with the flowmeter, such as densities of materials being measured, and/or configurations of flow elements associated with transporting material to the flowmeter. Then, the calibration values may be correlated with the relevant operational conditions, and stored for later use. In this way, during an actual operation of the flowmeter, a number of calibration values may be made available, and an optimal calibration value may be selected for an existing operational condition of the flowmeter.

7188534, Mar 13, 2007

Mar 2, 2005

11/069931

Michael S. Tombs - Oxford, GB
Manus P. Henry - Oxford, GB
Mihaela D. Duta - Oxford, GB
Robbie Lansangan - Houston TX, US
Robert E. Dutton - Louisville CO, US
Wade M. Mattar - Wrentham MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/84

73861356

A flowmeter is disclosed. The flowmeter includes a vibratable flowtube, and a driver connected to the flowtube that is operable to impart motion to the flowtube. A sensor is connected to the flowtube and is operable to sense the motion of the flowtube and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to determine an individual flow rate of each phase within a multi-phase flow through the flowtube.