JOSEPH J LEWICKE
Broker in Foxborough, MA

7533579, May 19, 2009

Jan 18, 2007

11/654747

Joseph J. Lewicke - Foxboro MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/32

7386122, 7386164

A reduced bore vortex flowmeter and flowmeter body includes a fluid inlet couplable in series to an upstream portion of a fluid flow conduit. The inlet fairs into a central bore having a transverse cross-sectional dimension less than that of the conduit, and which houses a shedder. The central bore is communicably coupled to a fluid outlet couplable to a downstream portion of the conduit. The inlet has a stepped or structured inner wall, including a first wall portion disposed at first angle to the downstream direction, and a second wall portion disposed at a second angle to the downstream direction. The second angle is greater than the first angle, so that the first and second wall portions form a substantially concave axial cross-section. The stepped intake improves linearity of flow measurements by reducing velocity profile errors and/or extending contracted flow to the shedder over a relatively wide flow range.

2013011, May 16, 2013

Jan 7, 2013

13/735721

Joseph J. Lewicke - Foxboro MA, US
Peter E. Allstrom - Attleboro MA, US
James H. Vignos - Needham MA, US

INVENSYS SYSTEMS, INC. - Foxboro MA

G05F 3/02

323312

Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

2011007, Mar 31, 2011

Dec 10, 2010

12/964966

Warren E. Cook - Upton MA, US
Joseph J. Lewicke - Foxboro MA, US
Peter E. Allstrom - Attleboro MA, US
James H. Vignos - Needham MA, US

INVENSYS SYSTEMS, INC. - Foxboro MA

G06F 15/00

702189

Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

8042411, Oct 25, 2011

Jun 4, 2009

12/478571

Joseph J. Lewicke - Foxboro MA, US
Paul F. Brosnihan - Millbury MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/32

7386122

A vortex flowmeter and method includes a conduit for process fluid flow and a shedder disposed within the central bore of the conduit. First and second diaphragms are mounted in inner wall portions of the conduit, on opposite sides of the shedder. A sensor is disposed externally to the conduit, and is coupled to each diaphragm with fill tubes. The diaphragms respond to pressure variations generated by vortex shedding, and transmit pulse trains through the fill tubes to a sensor. The pulse trains, which are substantially out of phase with one another, are effectively synchronized with one another by reversing phase of one pulse train.

7853415, Dec 14, 2010

Mar 1, 2007

11/680975

Warren E. Cook - Upton MA, US
Joseph J. Lewicke - Foxboro MA, US
Peter E. Allstrom - Attleboro MA, US
James H. Vignos - Needham Heights MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/00

702 45

Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

7212928, May 1, 2007

Sep 6, 2002

10/235835

Warren E. Cook - Upton MA, US
Joseph J. Lewicke - Foxboro MA, US
Peter E. Allstrom - Attleboro MA, US
James H. Vignos - Needham Heights MA, US

Invensys Systems, Inc. - Foxboro MA

G01F 1/00

702 45

Two-wire transmitters are described in which the required voltage that a control room must supply to the transmitter is lower at high current than at low current, thus freeing up more voltage for other uses, and in which a constant set of operating voltages may be maintained. A corrected pressure in a vortex flow meter may be determined that reflects the mass flow rate. Thus, the mass flow rate may be determined based on the corrected pressure reading and a measured volumetric flow rate. Density may be determined from pressure and temperature using a table containing error values based on a standard density determination and a relatively simple approximation. During operation of a flow meter, the stored error values may be linearly interpolated and the approximation may be computed to determine the density from the stored error value.

5576497, Nov 19, 1996

May 9, 1995

8/437336

James H. Vignos - Needham Heights MA
M. Charles Cheney - Wrentham MA
Michael G. Drainville - Manville RI
Norman O. Fonteneau - Achusnet MA
Joseph J. Lewicke - Foxboro MA

The Foxboro Company - Foxboro MA

G01F 132

7386122

A method and apparatus for increasing the resolution and accuracy of flow measurements made by vortex flowmeters through the use of an adaptive filter. A vortex sensor signal is conditioned by a bandpass filter whose corner frequencies are dynamically altered as a function of the measured frequency of the vortex sensor signal. When the change in frequency is relatively small, the filters' corner frequencies are set to track the frequency signal in accordance with a specified bandwidth thereby improving the signal-to-noise ratio. For large frequency changes, a new frequency signal is searched for thereby avoiding tracking erroneous noise signals. Furthermore, compensation for additional or missed vortex pulses is made thereby generating a more accurate vortex frequency measurement.