US 6,983,208 B2
Method and apparatus for combined measurements of concentration, distribution and flow velocity of suspended solids
Michael A. Metcalf, San Diego, Calif. (US); and John M. Land, Godalming (United Kingdom)
Assigned to MGD Technologies, Inc., San Diego, Calif. (US)
Filed on Nov. 24, 2003, as Appl. No. 10/722,046.
Prior Publication US 2005/0114046 A1, May 26, 2005
Int. Cl. G01F 1/00 (2006.01); G01F 17/00 (2006.01); G01F 1/20 (2006.01); G01F 1/66 (2006.01)
U.S. Cl. 702—45 40 Claims
OG exemplary drawing
 
1. An apparatus, for measuring concentration, distribution and flow of solids suspended in a flowing liquid, which comprises:
a transmitter emitting at least one directional beam of an acoustical waveform;
at least one detector receiving echo signals of said waveform backscattered from said solids;
means for gathering measured intensity values of said echo signals;
means for measuring Doppler frequency shifts of said echo signals; and
data processing equipment comprising means for translating said intensity values into concentration values of said solids, and means for interpreting said frequency shifts into flow measurements of said solids.