DustTrak™ II Aerosol Monitors 8530 are battery-operated, data-logging,
light-scattering laser photometers that give you real-time aerosol
mass readings. They use a sheath air system that isolates the aerosol
in the optics chamber to keep the optics clean for improved reliability
and low maintenance.
There is an additional charge for SGS Galson to download your data which is $50 for up to 5 units, $100 for 6-10 units and $150 for 11-15 units.
This instrument is rated as intrinsically safe.