Counting Efficiency and Resolution in Optical Particle Counters
Most Optical Particle Counters use a light source to illuminate a sample volume, an optical system to collect the particle’s scattered light pulse, a process to convert the scattered light into an electrical signal, and electronics to correlate particle size with the scattered light pulse. While the specific design varies greatly between manufacturers (and while the instruments vary with different sensitivity and flow rates), the fundamental principles of optical particle counter operation are quite similar across the industry.
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