CiDRA’s VF/GVF system with Phase Fraction Management (PFM), utilizes patented passive sonar, non-contact technology which provides dual measurement capability of flow and air content (gas void fraction-GVF) in slurries and liquids. This unique combination finally enables true phase fraction management leading to unprecedented improvements in process efficiencies and operations. Whether used to correct total volumetric flow in bubbly flows, correcting measurement error in density meters for a more accurate mass balance or helping to detect the cause of process upsets, Phase Fraction Management (PFM) delivers both top and bottom line value to thousands of customers around the world.