The 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.
• Rail and roadside monitoring
• Schools and playgrounds
• Underground facilities
• Solar power installations
• Wind energy installations
• Farms and ranches
• Hotels and public venues
Also, the ES-642 is installed with other particulate monitors such as the BAM and FRM instruments.
The ES-642 measures real-time airborne particulate concentration levels using the principle of forward laser light scatter.