Resonant Coriolis mass flowmeter

The essential sensing mechanism was investigated for the resonant Coriolis direct mass flowmeter. The mathematical model of the resonant direct mass flowmeter was established, based on a typical U-type tube resonant sensing structure. The output signal calculating model was provided for the above mass flowmeter based on measuring the amplitude ratio. A signal processing circuit prototype was designed and developed by making use of MCS-51 type micro-processor, based on the above output signal calculating model. The testing results show that measuring error is less than 0.1% F.S. for the above developed processing circuit prototype. The theoretical and experimental results obtained here are of practical significance for developing the Coriolis resonant direct mass flowmeter.