Coriolis mass flow meters are highly regarded for their precision, accuracy and simultaneous measurement of true mass flow, fluid density and temperature. Unfortunately, a well-known short coming of such meters is traditionally their inability to operate when presented with two-phase (gas/liquid) flow.

A novel all digital Coriolis mass flow transmitter with sophisticated amplitude control has been developed. It can operate not only in bubble but also in slug flows. The paper presented some air water and air oil results and comparison was made with the theory. The theory agreed well with test data for dispersed bubble flows. A neural network based online correction was also developed to give density error to mostly within +/-1% and mass flow within +/-2%.

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