Patent ID: 8555731
Filing Date: 2013-10-15
Classification: G01F

Abstract:
1. A compressed-flow generation device for use in making differential measurements of flow attributes, comprising: an open-ended tubular flow obstruction having an outer annular wall and an inner annular wall, said outer annular wall shaped to define a maximum radius portion of said flow obstruction, said inner annular wall shaped to define a minimum radius portion of said flow obstruction; a support arm having a first end and a second end, said first end adapted to be coupled to an exterior wall of a conduit, said second end coupled to said flow obstruction, wherein said support arm is adapted to position said flow obstruction in the conduit wherein a first flow region is defined around said outer annular wall and a second flow region is defined by said inner annular wall, and wherein said first end and said second end are separated from one another with respect to a length dimension of the conduit; at least one upstream measurement port formed in said support arm; a first manifold formed in said support arm and in fluid communication with each said upstream measurement port, said first manifold terminating and accessible at the exterior wall of the conduit; at least one downstream measurement port formed in said flow obstruction, each said downstream measurement port in fluid communication with one of said first flow region and said second flow region; and at least one second manifold formed in said flow obstruction and said support arm, each said second manifold in fluid communication with each said downstream measurement port so-communicating with one of said first flow region and said second flow region, each said second manifold terminating and accessible at the exterior wall of the conduit.