The AM510 is an intrinsically safe personal aerosol monitor that can be worn on the belt and has an internal sampling pump so that measurements can be made in the worker's breathing zone.It can also be used for area measurements of air particles. The unit includes a 10mm Don-Oliver cyclone and 1.0, 2.5 and 10 micron impactors. All necessary accessories are included. It provides real-time concentrations(mg/m3) and TWA. Additionally, it records maximum, minimum and average readings, elapsed time and 8-hour TWA.