The Met One Instruments, Inc. model ES-642 is a type of nephelometer which automatically measures real-time airborne PM10, PM2.5, or TSP particulate concentration levels using the principle of forward laser light scatter.
Sample air is drawn into the ES-642 and through the laser optical module, where the particulate in the sample air stream scatters the laser light through reflective and refractive properties. This scattered light is collected onto a photodiode detector at a near-forward angle, and the resulting electronic signal is processed to determine a continuous, real-time measurement of airborne particulate mass concentrations.
Applications include rail and roadside monitoring, schools and playgrounds, underground facilities, solar power installations, wind energy installations, farms and ranches, and hotels and public venues. Also, the ES-642 is installed with other particulate monitors such as the BAM and FRM instruments. The ES-642 is available to OEM customers to incorporate in their systems for enhanced monitoring.
For more information on this versatile monitor, please contact jpottberg@metone.com, ppomponi@metone.com, sales@metone.com.