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Portable air Sampler



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The ARA N-FRM ("Near" FRM) is a portable, rapidly deployable, battery-powered particulate sampling and monitoring device.

It delivers Federal Reference Method (FRM) level of performance and integrates many additional functions for unmatched versatility. The compact-sized sampler collects 24-hour TSP, PM10, or PM2.5 filter samples and can simultaneously measure local meteorological parameters. It can also be equipped with a light scattering particle sensor to log temporal particulate variations. For added versatility, the N-FRM can be operated in directional sampling mode and also has the capability of remote turn on. For more utility, the N-FRM can be operated in sensor only mode for long term collection of meteorological and particulate data.



  • Flow Range: 10-20 LPM
  • Nominal Flow: 16.7 LPM
  • Flow Accuracy: +/-2% Flow
  • Precision: +/-1%
  • Li-Ion Batteries: 18V /5Ah
  • Recharge Time: 1-Hour
  • Battery Operation: 30+ hrs
  • Data Output: USB Flash
  • Dimensions: 10” x 12” x 7”
  • Sampler Weight: 15 LBS
  • Shipping Weight: 25 LBS



  • Versatile inlet configurations for PM2.5, PM10, or TSP sampling
  • FRM quality 24-hour samples at 16.7 LPM
  • Cost effective at only a fraction of traditional site-based FRM samplers
  • Defensible data logging capabilities for all sampling parameters
  • Deployable compact size and battery power allows remote use
  • Flexible mounting options for rapid deployment
  • Real-time particle sensor option for PM10 and PM2.5
  • Directional sampling capability with optional meteorological sensor
  • Sensor only mode for long term meteorological and dust surveys
  • Easy data retrieval via USB flash drive
  • Programmable with intuitive user interface
  • Low maintenance particulate separators require no grease or oil
  • Rechargeable batteries complete full charge in 1 hour
  • Standard FRM 47mm filter media and cassettes



  • Urban Air Monitoring Networks
  • National Air Monitoring Networks
  • Roadside Air Monitoring
  • Industrial Perimeter Monitoring
  • Environmental Impact Assessments
  • Research Projects
  • Short-Term Hot Spot & Emergency Monitoring
  • Industrial Hygiene