B-POP Mono-optical probe dedicated to bubbly flow analysis Simultaneous measurements of : • Void fraction • Velocity • Flux and size of each bubble and local flow rate • Chord-velocity • Diameters correlation (D10, D32, ...) Unique technology complementary to existing tools for dense flow analysis A2 Photonic Sensors c/o INPG-MINATEC 3, Parvis Louis Néel - BP 257 38016 Grenoble cedex 1, FRANCE Tél: +33 (0)4 56 52 95 43 [email protected] www.A2PhotonicSensors.com

Working principle Working principle Concentration, void fraction Velocities Bubbly flow Phase indicator function Chords Optoelectronic module Optical fiber link (customer-defined length) The operation of B-POP relies on measuring the reflection of a laser beam at the probe tip. The sensor is sensitive to the refractive index of the surrounding phase and detects the phase changes at a given location. Velocity measurements are based on the propagation of the liquid-gas interface along the sensing tip (rising time of the signal). B-POP works by contact and does not require any light propagation...