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Phase doppler particle analyzer (PDPA) systems provide accurate and reliable flow velocity and droplet size data from all spray diagnostics situations—from large spray to dense spray in fire suppression.

The phase doppler method is based upon the principles of light scattering interferometry. Measurements are made at a small, non-intrusive optical probe volume defined by the intersection of two laser beams. As a particle passes through the probe volume, it scatters light from the beams into a multi-detector receiving probe, strategically located at an off-axis collection angle. The phase shift between the doppler burst signals from different detectors is proportional to the size of the spherical particles.

The major components to make up a phase doppler particle analyzer (PDPA) system generally consist of a laser, transmitting optics, signal processor, receiver probe and controlling software.

TSI offers two systems versions with different laser/transmitting optics to meet your challenging measurements in dense spray or in large facilities: the PowerSight-based and the Itasca-based PDPA Systems.

PowerSight-based PDPA System

Uses the pre-configured PowerSight module with built-in solid-state high-power laser and...

Itasca-based PDPA System

Uses Itasca laser module with built-in Bragg cell to provide two equal-power laser beams for your...

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