Drive techniques for a digital flowmeter

Manus Henry; Mayela E.  Zamora

Drive techniques for a digital flowmeter

Manus Henry (Inventor)
, Mayela E. Zamora (Inventor)

University of Oxford

Research output: Patent

Abstract

A flowmeter comprises a vibratable flowtube, a sensor connected to the flowtube for sensing the motion of the flowtube and a driver connected to the flowtube to impart energy to the flowtube. A random frequency generator generates random frequency signals 1708. A control and measurement system supplies the random frequency signals to the driver during a first mode of operation of the flowmeter. The random frequency signals may be filtered 1710 to remove unwanted frequency components. The control and measurement system is able to transition the flowmeter into a second mode of operation, characterised by a second drive signal. The fluid flow may be two or three phase (e.g. water, oil and gas) and the flowmeter may measure the mass flowrate or density of the fluid. A temperature or pressure sensor may be provided.

Original language	English
Patent number	GB2428090B
IPC	G01F 1/84
Priority date	29/03/02
Filing date	31/03/03
Publication status	Published - 17 Jan 2007
Externally published	Yes

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Drive techniques for a digital flowmeter
Henry, M. (Inventor) & Zamora, M. E. (Inventor), 21 Apr 2015, IPC No. G01F 1/84, Patent No. US9014997B2, 22 May 2013, Priority date 27 Nov 1996, Priority No. US6655497P
Research output: Patent

Open Access
Drive techniques for a digital flowmeter
Henry, M. (Inventor) & Zamora, M. E. (Inventor), 18 Jun 2013, IPC No. G01F 1/00, G06F 19/00, G01F 1/12, Patent No. US8467986B2, 6 Aug 2010, Priority date 8 Jul 1998, Priority No. US11173998A
Research output: Patent

Open Access
Drive Techniques For A Digital Flowmeter
Henry, M. (Inventor) & Zamora, M. E. (Inventor), 19 Dec 2013, IPC No. G01F 1/84 , Patent No. US2013333484A1, 22 May 2013, Priority date 26 Nov 1997, Priority No. US6655497P
Research output: Patent

Open Access

Cite this

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title = "Drive techniques for a digital flowmeter",

abstract = "A flowmeter comprises a vibratable flowtube, a sensor connected to the flowtube for sensing the motion of the flowtube and a driver connected to the flowtube to impart energy to the flowtube. A random frequency generator generates random frequency signals 1708. A control and measurement system supplies the random frequency signals to the driver during a first mode of operation of the flowmeter. The random frequency signals may be filtered 1710 to remove unwanted frequency components. The control and measurement system is able to transition the flowmeter into a second mode of operation, characterised by a second drive signal. The fluid flow may be two or three phase (e.g. water, oil and gas) and the flowmeter may measure the mass flowrate or density of the fluid. A temperature or pressure sensor may be provided.",

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AB - A flowmeter comprises a vibratable flowtube, a sensor connected to the flowtube for sensing the motion of the flowtube and a driver connected to the flowtube to impart energy to the flowtube. A random frequency generator generates random frequency signals 1708. A control and measurement system supplies the random frequency signals to the driver during a first mode of operation of the flowmeter. The random frequency signals may be filtered 1710 to remove unwanted frequency components. The control and measurement system is able to transition the flowmeter into a second mode of operation, characterised by a second drive signal. The fluid flow may be two or three phase (e.g. water, oil and gas) and the flowmeter may measure the mass flowrate or density of the fluid. A temperature or pressure sensor may be provided.

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Drive techniques for a digital flowmeter

Abstract

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