US 7,320,252 B2 | ||
Flow meter using an expanded tube section and sensitive differential pressure measurement | ||
Richard T. Jones, Hamden, Conn. (US) | ||
Assigned to Weatherford/Lamb, Inc., Houston, Tex. (US) | ||
Filed on Sep. 19, 2006, as Appl. No. 11/532,995. | ||
Application 11/532995 is a continuation of application No. 11/168819, filed on Jun. 28, 2005, granted, now 7,107,860. | ||
Application 11/168819 is a continuation of application No. 10/647014, filed on Aug. 22, 2003, granted, now 6,910,388. | ||
Prior Publication US 2007/0062307 A1, Mar. 22, 2007 Prior Publication US 2007/0272033 A9, Nov. 29, 2007 |
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This patent is subject to a terminal disclaimer. | ||
Int. Cl. G01F 1/44 (2006.01) |
U.S. Cl. 73—861.63 [73/861.64] | 19 Claims |
1. A meter for measuring flow rate of a fluid, comprising:
a tubing forming a body of the meter and having a middle portion between first and second portions, wherein the middle portion
defines a larger inner diameter relative to the first and second portions; and
a quartz pressure sensor coupled to the tubing that has a maximum of two pressure ports for sensing pressure of the fluid
in the meter, wherein the quartz pressure sensor is coupled to at least one of a first of the two pressure ports disposed
at the first portion and a second of the two pressure ports disposed at the middle portion.
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