Wet gas measurement
View Patent ↗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.
1. A method comprising:
passing a multi-phase process fluid through a vibratable flowtube;
inducing motion in the vibratable flowtube;
collecting sensor data from a sensor attached to the flowtube;
providing a computer system further comprising a computer processor with computer instructions; said instructions performing the steps of:
determining frequency from collected sensor data;
comparing with an expected frequency range;
eliminating a zero offset when frequency is within the expected range;
determining an amplitude;
determining a phase; and
calculating a drive signal using the amplitude and phase.
2. The method of claim 1 , wherein the zero offset is provided from a zero offset compensation procedure.
3. The method of claim 1 , wherein the amplitude is determined using a Fourier-based technique.
4. The method of claim 1 , wherein the phase is determined using a Fourier-based technique.
5. The method of claim 1 , wherein the calculated drive signal is feed back into the positive drive signal to vibrate the flow tube.
6. The method of claim 1 , wherein the frequency is outside the expected range and setting a stall signal for subsequent communication.