Fast admittance measurement method for piezoelectric leaf cell sensor array in multiphase gas-oil-water flow metering

An apparatus for fluid measurement, the apparatus comprising:

• a leaf cell sensor having one or more piezoelectric radial components connected to a circumferential component, the one or more radial components and the circumferential component having a distal face and a proximal face;
• a first electrode positioned on the distal face of at least one radial component;
• a second electrode positioned on the proximal face of the at least one radial component;
• a voltage source having a negative terminal and a positive terminal, the negative terminal being connected to the first electrode and the positive terminal being connected to the second electrode;
• an electric current measurement device connected to the first and second electrode to measure current flowing between the first and second electrode;
• and
• a processor of a computing device and a non-transitory computer readable medium storing instructions thereon, wherein the instructions, when executed, cause the processor to determine, from the measured current, one or more properties of the fluid,
• wherein the voltage source couples electrical energy into the one or more piezoelectric radial components at multiple frequencies concurrently.