Wet gas measurement

摘要

A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. A first apparent property of the multi-phase process fluid based on the motion of the vibratable flowtube is determined, and an apparent intermediate value associated with the multi-phase process fluid based on the first apparent property is determined. A corrected intermediate value is determined based on a mapping between the intermediate value and the corrected intermediate value. A phase-specific property of a phase of the multi-phase process fluid is determined based on the corrected intermediate value.

主权项

1. A flowmeter comprising:
a vibratable flowtube for containing a multi-phase fluid; a driver connected to the flowtube and configured to impart motion to the flowtube such that the flowtube vibrates; a sensor connected to the flowtube and configured to sense the motion of the flowtube and generate a sensor signal indicative of said motion; and a controller to receive the sensor signal and configured to: determine an estimated frequency of the sensor signal; compare the estimated frequency with an expected frequency range; eliminate a zero offset from the sensor signal when the determined frequency is within the expected frequency range; determine an amplitude of the sensor signal; determine a phase of the sensor signal; and output a drive signal to the driver, the drive signal being determined by the controller using the amplitude and the phase of the sensor signal.