Patent ID: 7974792

Claim:
Meter electronics ( 20 ) for determining a liquid flow fraction in a gas flow material flowing through a flow meter ( 5 ), the meter electronics ( 20 ) comprising: an interface ( 201 ) for receiving a first sensor signal and a second sensor signal from the flow meter ( 5 ); and a processing system ( 203 ) in communication with the interface ( 201 ) and configured to receive the first and second sensor signals from the interface ( 201 ), generate a 90 degree phase shift from the first sensor signal, compute a frequency response using the 90 degree phase shift and the first sensor signal, determine a substantially instantaneous flow stream density of the gas flow material using the frequency response, compare the substantially instantaneous flow stream density to one or both of a predetermined gas density that is representative of a gas flow fraction of the gas flow material and a predetermined liquid density that is representative of a liquid flow fraction, and determine the liquid flow fraction from the flow stream density and one or both of the predetermined gas density and the predetermined liquid density.