HD-7204 Personal Direct Reading Aerosol Monitor

The all new Haz-Dust™ HD-7204 offers a flow compensated pump for compliance monitoring. The days of requiring two devices and co-locating a FRM filter cassette and real-time reading instrument are over! The HD-7204 offers a flow compensated pump with real-time capability. The sensor, which is mounted in the OSHA defined breathing zone, is sandwiched between the sampling inlet and a FRM filter cassette option.



  • Applications requiring a compliance monitor – including the new OSHA regulation on silica.
  • Evaluating work practices and controls
  • Air quality studies in occupational health and Industrial Hygiene
  • Safety Audits
  • Welding fume exposure


  • 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 programing for creating a unique aerosol library and data sets.


Display: Touch color display

Sampling flow rate: The pump is capable to maintain flow within ±5% as follows: 1.0 Lpm up to 70 Inch H2O; 2.5 Lpm up to 55 Inch H2O, and 5.0 Lpm up to 20 inch H2O.

Sampling rate: 1 sec., 4 sec., 10 sec., and 60 sec.

Filter cassette: 37mm/ or 25mm preloaded and weighted filter cassette

Sensing range: 0.001-500 mg/m3 or 1-500,000 ug/m3

PM size range: 0.1 to 100μm

Digital output: Micro-USB

Battery: Lithium Ion

Charge time: 3 hours

Data storage: 43,200 data points

Operating time: 22+ hours

Operating temp: 0°C -50°C

Weight: 1.12 lbs

Dimensions: 1.75” x 1.5”