| US 7,380,439 B2 | ||
| Apparatus and method for compensating a coriolis meter | ||
| Daniel L. Gysling, Glastonbury, Conn. (US); Patrick Curry, Glastonbury, Conn. (US); Douglas H. Loose, Southington, Conn. (US); and Thomas E. Banach, Barkhamsted, Conn. (US) | ||
| Assigned to CiDRA Corporation, Wallingford, Conn. (US) | ||
| Filed on Dec. 20, 2006, as Appl. No. 11/642,168. | ||
| Application 11/642168 is a continuation of application No. 10/892886, filed on Jul. 15, 2004, granted, now 7,152,460. | ||
| Claims priority of provisional application 60/579448, filed on Jun. 14, 2004. | ||
| Claims priority of provisional application 60/570321, filed on May 12, 2004. | ||
| Claims priority of provisional application 60/539640, filed on Jan. 28, 2004. | ||
| Claims priority of provisional application 60/524964, filed on Nov. 25, 2003. | ||
| Claims priority of provisional application 60/512794, filed on Oct. 20, 2003. | ||
| Claims priority of provisional application 60/510302, filed on Oct. 10, 2003. | ||
| Claims priority of provisional application 60/504785, filed on Sep. 22, 2003. | ||
| Claims priority of provisional application 60/503334, filed on Sep. 16, 2003. | ||
| Claims priority of provisional application 60/491860, filed on Aug. 01, 2003. | ||
| Claims priority of provisional application 60/487832, filed on Jul. 15, 2003. | ||
| Prior Publication US 2007/0125154 A1, Jun. 07, 2007 | ||
| Int. Cl. G01N 7/00 (2006.01); G01N 22/00 (2006.01); G01F 1/20 (2006.01) | ||
| U.S. Cl. 73—32A [73/61.44; 73/861.18] | 27 Claims |
| 1. A flow measuring system for measuring a parameter of an aerated fluid flowing in a pipe, the measuring system comprising:
a coriolis meter having at least one tube wherein fluid flows therethrough, the coriolis meter providing a frequency signal
indicative of a natural frequency of a tube and/or phase signal indicative of a phase difference between a pair of tubes;
a flow measuring device measures the speed of sound propagating through the fluid, the measuring device providing at least
one of an SOS signal indicative of the speed of sound propagating through the fluid, a GVF signal indicative of the gas volume
fraction of the fluid and a reduced frequency signal indicative of the reduced frequency of the fluid; and
a processing unit determining a mass flow rate measurement indicative of the mass flow of a non-gaseous portion of the fluid
in response to at least one of the SOS signal, the GVF signal, the reduced frequency signal and the phase signal, and/or determining
a density measurement indicative of the density of the non-gaseous portion of the fluid in response to the SOS signal, the
GVF signal, the reduced frequency signal and the frequency signal.
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