| 摘要 |
System for, and method of, monitoring airborne particulate, including particulate of the PM2.5 class. The system for monitoring airborne particulate includes an optical sensor (5) to measure size characteristics of sampled airborne particulate and a humidity sensor (24) to measure relative humidity. An adjusted airborne concentration value is then produced in response to the measured size characteristics and to the humidity measurement. According to one embodiment the optical sensor (5) is implemented as a multi-wavelength nephelometer, e.g., two-wavelength nephelometer. Accordingly to another embodiment the humidity sensor (24) is placed relatively near the optical sensing region and makes a relative humidity measurement.
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