S-POP Mono-optical probe dedicated to atomization and dense spray analysis Simultaneous measurements of : • Concentration • Velocity • Flux and size of each droplet and local flow rate • Chord-velocity • Diameters correlation (D10, D32, ...) Unique technology complementary to existing tools for spray 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 Phase indicator function Concentration, void fraction Velocities Spray Chords Optoelectronic module Optical probe Optical fiber link (customer-defined length) Optical Probe Sensing Tip Drop C A Arrival Time (A) Gas Level Exit Time (B) End of Rise Time (C) B Liquid Level Time The operation of S-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...