Abb K-flow Inc.

Mark Perelshteyn

Martin Kane

A fluid mass flow meter comprises a swirl generator 16 followed by a convergent nozzle 20 which produce a strongly swirling flow with periodic pressure fluctuations. The flow is subjected to a Coriolis force in a divergent nozzle 26. The pressure fluctuations are sensed by axially-spaced pressure-collecting pipes 32, 32', and a phase shift in the pressure fluctuations between the two pipes due to the Coriolis force is a measure of mass flow.

Fluid mass flow meters

A hydrodynamic fluid divider is provided whereby by a shunt line directs a portion of the overall flow of a defined fluid stream through a flow measuring device, such as a Coriolis mass flow meter. The proportion of the shunt line flow portion is determined by the relationship of various fluid restrictions within the shunt line and the main line of the divider. The measured flow value for the shunt line flow is utilized along with a scale-up factor to determine the overall flow through the divider. The proportional relationship of the shunt line to the overall flow permits a reduction in the size and operational requirements for the flow measuring device.

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Vineland, NJ, United States of America

Mark Perelshteyn