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The Haz-Dust Real-Time Diesel Particulate Monitor Model DPM-4000 is a complete and personal portable package that allows true breathing zone measurements and comprehensive graph reporting. The product is designed for measuring diesel particulate matter for Industrial Hygiene and Environmental air investigations. DPM-4000 is individually worn and offers immediate determination and data storage of airborne diesel particulate concentrations in micrograms per cubic meter. This is the only commercially available personal direct reading aerosol monitor specifically designed and calibrated for measuring occupational exposures of diesel particulate matter in the work place.
Diesel powered equipment usage is widespread and growing. Worldwide diesel exposures occur in transportation, mining, agriculture and other industries. Diesel particulate matter (DPM) studies have consistently found positive association as a human carcinogen. Diesel particulate exposures adversely affect human respiratory and cardiovascular health. The DPM-4000 Diesel Particulate Monitoring kit comes complete with GS-1 Respirable Cyclone and one 37mm sampling cassette preloaded with quartz filter. The inline 37mm filter cassette allow the user to concurrently collect filter samples for carbon analysis by NIOSH method 5040.
The signal processing electronics and microprocessor are enclosed in a compact case that attaches to the individual’s waist. A real-time display reports concentrations in micrograms per cubic meter (ug/m3). Statistics such as: TWA, STEL, Max, and Minimum can instantly be viewed on the display. The internal user adjustable alarm can be preset to alert the user of approaching dangerous threshold limits.
Accompanying software provides management ready graphs and reports. DPM-4000 is an excellent survey compliance tool for determining worker exposure to diesel contaminates, diesel engine combustion efficiency, evaluating levels of respiratory protection, or any application that requires immediate and accurate air monitoring of lung damaging diesel particulates.


  • Diesel Engine Surveys
  • Combustion Efficiency
  • Mining
  • Transportation (i.e. Bus Depots, Trucking, & Freight)
  • Valuable Survey Tool for MSHA & NIOSH Compliance Program – Reviews or any air monitoring applications involving lung damaging diesel particulate matter


  • Direct Read Out in μg/m3
  • Comfortable Light Weight
  • Miniaturized Sensor Design
  • Adjustable Alarm Signal
  • Enhanced Accuracy
  • Splash-Proof
  • On Screen Display of Statistics
  • Data Logging
  • RFI/EMI Protection

Specifications DPM-4000

Alpha-numeric LCD-4line, 20 character
mg/m3 concentration reading
Four key splash proof membrane switch
Menu driven
NIOSH gravimetric reference
NIST traceable – SAE fine test dust
Accuracy: +/- 10%
Particulate Size Range: <1 to 10 μm
Precision: +/- 2 μg/m3
Sample Flow Rate: 1.0 – 3.3 liters/minute
Filter Cassette: 37mm disposable
Analog Output: 0-2 vdc
Alarm Output: 90db at 3ft
Recording Time: 1 second to 21 weeks
Sampling Rate: 1 second, 1 min, and 10 min
Concentration Range: 1-20,000 μg/m3
Data Storage: 21,500 data points
Security Code: 4 digit combinations
Memory & Time Storage: ≥ 5 years
Real-time Clock and Data Display
Hours, minute, second, day, month, & year
Data Display: Concentration in μg/m3
TWA, MAX, MIN, STEL, date, & time
Digital Output: RS-232
Operating Temperature: 0 to 50º C
DustComm Pro Software – Windows™
Power: NiMH Rechargeable Battery
Operating Time: ≥ 8 hours
Charging Time: 10-12 hours
Humidity: 95% non-condensing
Dimensions (case): 5.5”x3.25”x2.75”
Sensor Dimensions: 1.75” x 1.5”
Weight: 2 lbs