|Dantec Dynamics' Phase Doppler Anemometry (PDA) (also known as Particle Dynamics Analysis or PDPA) systems measure the size, velocity and concentration of spherical particles, droplets or bubbles suspended in gaseous or liquid flows.
A very common application is the analysis of atomized liquids (sprays) in e.g. fuel injection, spray painting, liquid metal spray and pharmaceutical sprays.
PDA measurement on a fuel injection nozzle.
Courtesy of Achates Power, Inc.