System for sand detection at constrictions or flow obstacles...

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy

Reexamination Certificate

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Details

C073S061750

Reexamination Certificate

active

07578203

ABSTRACT:
This invention relates to a system for measuring solid particles, e.g. sand, in a fluid flow in a pipe, comprising at least one acoustic sensor for registering acoustic signals generated from collisions between particles and a surface. The pipe comprises a constriction through which the fluid flow passes, and that at least one of said acoustic sensors are positioned in relation to said constriction, and on a surface facing toward the flow so as to receive acoustic signals resulting from collisions between particles and the surface.

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International Search Report for PCT/NO2005/000179 mailed Aug. 8, 2005.
Norwegian Search Report for 20042353 dated Jan. 13, 2005.
International Preliminary Report on Patentability for PCT/NO2005/000179 completed Oct. 5, 2006.

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