Personal Silica Monitor OSHA compliant: SM-7204
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Personal Silica Monitor OSHA compliant: SM-7204 | Environmental Devices

The SM-4000 Real-Time Personal Silica Monitor is designed for accurate worker exposure assessment. It places a Real-Time Optical Sensor in the OSHA-defined breathing zone, reducing dust buildup compared to other devices. A gravimetric filter cassette enhances particle capture, ensuring precise exposure measurements. Real-Time Concentration Readings are available, and the included DustComm Software allows for detailed analysis and time history reporting.


Introducing the SM-4000 Real-Time Personal Silica Monitor. This air sampler is strategically positioned within the OSHA-defined breathing zone, ensuring a precise measurement of workers' exposure levels. Unlike many other Real-Time optical devices on the market, the SM-4000 boasts a cutting-edge Real-Time Optical Sensor in this key breathing zone location, significantly reducing the accumulation of dust on inner walls.

What sets the SM-4000 apart is the inclusion of a gravimetric filter cassette positioned directly behind the optical sensor. This configuration optimizes particle capture on the filter, resulting in the most accurate depiction of worker exposure levels. With its Real-Time Concentration Readings, the SM-4000 provides immediate feedback on silica concentrations, while the included DustComm Software empowers you with graphical analysis and comprehensive time history reporting.

  • Flow compensated pump
  • An optical sensor mounted in the OSHA defined breathing zone
  • Accepts any standard 27 or 25mm pre-loaded filter cassette
  • Validated sampler meets the ISO 7708 Standard
  • Easy to clean optical sensor with calibration span verification.
  • On screen programming for creating a unique aerosol library and data sets.


  • Foundry Work
  • OSHA compliance
  • Stone Cutting
  • Quarry Work
  • Tunneling
  • Rock Drilling
  • Any occupation which cuts, chips, drills, grinds silica into respirable size fractions