Validation of Light Scattering Probe for Particle Concentration Measurement

The validation for a low-cost, real-time probe was made in order to detect particle breakthrough of industrial particle collectors. Tests were performed in terms of the probe stabiUty, sensitivity, and applicability as a detector. The result showed that sensitivity to varying particle concentration had statistically significant relation to a widely used aerosol photometer in the range from 0.1 to 20 mg/m[3]. In addition, reasonable stability for the probe could be observed for 20 minutes continuous measurement. The probe sensitivity and stability varied with particle type but had statistically significant relation to the aerosol photometer for each type of particle. However, particle deposition on probe photodetectors was observed, which gradually decreased probe sensitivity. These results show that a low-cost, real-time light scattering probe could be applicable to detect particle break through of industrial particle collectors once calibrated for a given particle type, but that photodetectors must have modifications to avoid particle depositions.Master of Science in Environmental Engineerin