BAM-1020 Continuous Particulate Monitor

The BAM-1020 automatically measures and records airborne particulate concentration levels (in milligrams or micrograms per cubic meter) using the industry-proven principle of beta ray attenuation. Thousands of BAM-1020 units are currently deployed worldwide, making the unit one of the most successful air monitoring platforms in the world.

Data Collection

All data files are accessible via an industry standard two-way RS-232 serial port using common terminal programs or Met One Instruments’ software such as Air PlusTM and Comet.TM The data is available in a variety of formats including daily reports, last record, all data, and new records since last download. Optional Ethernet and USB data collection support is available.


  • U.S. EPA Equivalent Method for PM10, PM2.5, and PM10-2.5 monitoring
  • Long term unattended remote operation of up to 60 days between site visits
  • Very low operating costs
  • Automatic Span Calibration checks
  • Fast and easy field audits using common FRM audit tools
  • Rugged anodized aluminum, stainless steel, and baked enamel construction
  • Highly accurate, reliable, and mechanically simple flow system
  • Advanced Smart Heater technology precisely controls sample relative humidity
  • Integrated datalogger allows the connection of up to six meteorological sensors
  • Data retrieval through RS-232 serial ports using direct PC connections, modems, printers, or digital data collection systems