A comparison of the multi-venturi type meter with other fluid meters has been made. A multi-venturi type meter is one having two or more venturis cascaded in such a manner that the discharge plane of smaller venturis is positioned in the throat of larger venturis. Although the concept of venturi cascading dates back to around 1880, its unique potential in general mass-flow-rate measurement applications has not been exploited. The primary advantages of the multi-venturi type meter are that it generates significantly less loss than conventional venturis, particularly at high signal magnifications, and has a much broader flow range. As a result of the latter characteristic, a single multi-venturi meter could be used to replace two or three conventional flow meters in some fluid-metering applications.

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