Analytical Technologies Singapore

Phase Doppler Interferometry (PDI)

Phase Doppler Interferometry (PDI) measures the diameter and velocity of small droplets. The measurement of drop size distribution and mean values can be done without the requirement of assuming a distribution function. It is based on the laser light wavelength which is known to high accuracy. The particle sizing is independent of light intensity so attenuation and window contamination have a minimal effect on drop sizing performance.

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