Flow meter insert including vertically offset reflectors

Abstract

A flow insert configured to minimize the effect of an upstream bluff body for insertion in an ultrasonic meter transporting a flow stream. The flow insert includes an inlet side receiving the flow stream, an outlet side receiving the flow stream after the flow stream passes through the inlet side, a flow insert flow area between the inlet side and the outlet side, the flow insert flow area including an upper portion and a lower portion, and a flow measurement area defined by at least two transducer ports and at least an upstream and a downstream reflector defining an ultrasonic signal path through the flow measurement area, where the upstream reflector is positioned and supported by an upstream bluff body and is vertically offset from the downstream reflector that is positioned and supported by a downstream bluff body to reduce a portion of the ultrasonic signal path within a wake of the upstream reflector.

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