Abstract: An apparatus, system and method for use in determining at least two properties of a flowing multiphase fluid involves measuring pressure fluctuations caused by density variations of the multiphase fluid flowing by at least two monitoring devices positioned at distinct metering sections having different cross-sectional areas. The acquired signals are converted to root mean square voltage values which are inputs to equations derived from sensor feature maps. The equations are solved to determine mixture velocity and gas void fraction which are used to quantify volumetric gas and liquid flow rates of the multiphase fluid.

Abstract: An apparatus, system and method for use in determining at least two properties of a flowing multiphase fluid involves measuring pressure fluctuations caused by density variations of the multiphase fluid flowing by at least two monitoring devices positioned at distinct metering sections having different cross-sectional areas. The acquired signals are converted to root mean square voltage values which are inputs to equations derived from sensor feature maps. The equations are solved to determine mixture velocity and gas void fraction which are used to quantify volumetric gas and liquid flow rates of the multiphase fluid.