Patent ID: 8020428

Claim:
A method of determining a value for a fluid property of a fluid flowing through a fluid conduit, further the method comprising: obtaining a first vibration reading for a fluid conduit when a fluid flows through the fluid conduit; subjecting the first vibration reading to at least one of deconvolution and cross-correlation to separate a first combined structural response of the fluid conduit for the first vibration reading from excitation and base coupling effects for the first vibration reading; determining a value of a fluid property for the fluid by using the first combined structural response of the fluid conduit and a second combined structural response for a second vibration reading; obtaining the second vibration reading when a second fluid conduit, with mechanical properties similar to mechanical properties of the fluid conduit, contains a second fluid with the fluid property known; and subjecting the second vibration reading to at least one of deconvolution and cross-correlation to separate the second combined structural response for the second vibration reading from excitation and base coupling effects for the second vibration reading.