Gail Murray

US Patent:

6816808, Nov 9, 2004

Filed:

Jan 3, 2002

Appl. No.:

10/038947

Inventors:

Klaus Joachim Zanker - Houston TX
Gail Paulin Murray - Tomball TX

Assignee:

Daniel Industries, Inc. - Houston TX

International Classification:

G04G 500

US Classification:

702178

Abstract:

A method is disclosed to identify peak switching errors in an ultrasonic meter and how to correct for them. The method compares transit time measurements from two chords having different lengths to establish an error value. Depending on the magnitude and sign of the error value, any peak switching error can be identified and consequently corrected.

US Patent:

6837113, Jan 4, 2005

Filed:

Sep 5, 2003

Appl. No.:

10/656571

Inventors:

Gail P. Murray - Houston TX, US
Abhishek Bhatt - Houston TX, US

Assignee:

Daniel Industries, Inc. - Houston TX

International Classification:

G01F 120

US Classification:

7386118

Abstract:

Methods and apparatus for operating an ultrasonic flow meter to accurately estimate the average flow velocity in a pipe when the meter has at least one failed chord and one non-failed chord. The method partitions the velocity range into a number of consecutive, non-overlapping “bins,” where separate bins are maintained for each chord and each flow direction. Each bin stores a chord proportion value and, in some embodiments, a chord velocity value. The bins are initialized with pre-selected values and, during normal operation, updated, or trained, based on the measured velocities. When a chord fails, and there is at least one non-failed chord, an estimated proportion value for each non-failed chord is generated using the values stored in the bins. The estimated average flow velocity is then calculated by dividing the summation of the measured flow velocities, from the non-failed chords, by the summation of the estimated proportions.

US Patent:

6950768, Sep 27, 2005

Filed:

Sep 8, 2003

Appl. No.:

10/657689

Inventors:

Klaus J. Zanker - Houston TX, US
Gail P. Murray - Tomball TX, US

Assignee:

Daniel Industries, Inc. - Houston TX

International Classification:

G01D018/00

US Classification:

702 89, 7386127

Abstract:

A method and related ultrasonic meter identify and correct for transit time errors such as peak switch errors. The method includes calculating values for a set of diagnostics from measurements of the fluid flow, including transit time measurements. Based on the values for the diagnostics, and whether and how they fall outside of their respective ranges, the meter can identify a variety of problems with the meter or fluid flow, such as whether there has been an intermittent peak switch, a permanent peak switch, or the presence of noise, velocity pulsation in the fluid flow, temperature stratification, of other problem. In the event there is a problem with the meter, the meter self-tunes in order to minimize the chances of the problem happening again.

US Patent:

7013240, Mar 14, 2006

Filed:

Sep 8, 2003

Appl. No.:

10/657384

Inventors:

Vipin Malik - Houston TX, US
Gail Murray - Tomball TX, US
Abhishek Bhatt - Houston TX, US

Assignee:

Daniel Industries, Inc. - Houston TX

International Classification:

G06F 11/30
G06F 15/00
G21C 17/00

US Classification:

702183

Abstract:

A system and method is configured to take a “snapshot” of data received by a meter or measurement device so that it may be later frozen or duplicated in a manner identical to that of the meter. The system includes recording a continuous stream of raw data into a format suitable for transport to a site better suited for debug and diagnosis, and replaying the data on a replay device such that time, as seen by the system, may be “frozen” at will and any instant of the stream examined.

US Patent:

7624616, Dec 1, 2009

Filed:

Jul 21, 2006

Appl. No.:

11/459077

Inventors:

Gail P. Murray - Tomball TX, US
Kerry D. Groeschel - Houston TX, US

Assignee:

Daniel Measurement and Control, Inc. - Houston TX

International Classification:

G01F 25/00

US Classification:

73 134

Abstract:

A meter proving method and system. At lease some of the illustrative embodiments are methods comprising establishing a prover time by a prover device, measuring a flow rate of a fluid with a flow meter that uses multiple measurements taken over a period of time to produce each individual flow rate value (the flow meter electrically coupled to the prover device), and generating a meter volume over the prover time based on the flow rate. The generating the meter volume based on the flow rate does not involve: generating a pulse train output signal by the flow meter; and generating the meter volume based on an attribute of the pulse train.

US Patent:

8122754, Feb 28, 2012

Filed:

Oct 26, 2009

Appl. No.:

12/605495

Inventors:

Gail P. Murray - Tomball TX, US
Kerry D. Groeschel - Houston TX, US

Assignee:

Daniel Measurement and Control, Inc. - Houston TX

International Classification:

G01F 25/00

US Classification:

73 134

Abstract:

A meter proving method and system. At lease some of the illustrative embodiments are methods comprising establishing a prover time by a prover device, measuring a flow rate of a fluid with a flow meter that uses multiple measurements taken over a period of time to produce each individual flow rate value (the flow meter electrically coupled to the prover device), and generating a meter volume over the prover time based on the flow rate. The generating the meter volume based on the flow rate does not involve: generating a pulse train output signal by the flow meter; and generating the meter volume based on an attribute of the pulse train.