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HAZ-DUST 7204 Direct-reading and Compliance Dust Monitor

Orderable Items HAZ-DUST 7204 Monitor Kit includes monitor, 37-mm 2-piece opaque filter cassette, open-faced sampling adapter, thoracic sampling inlet, IOM inhalable sampling head, flow adapter, zero accessory, battery charger, and DustComm, Pro Software

  • Flow compensated pump for compliance monitoring
    • User-selectable flow rate

  • Accepts any 37 or 25-mm preweighed, preloaded filter cassette for gravimetric samples
    • Use filter samples to cross-calibrate to local dust

  • Easy-to-clean miniaturized optical sensor mounts in the OSHA-defined breathing zone

  • The only dust monitor that allows true size-selective sampling in the breathing zone
    • Inhalable – 2 L/min with IOM (meets ISO 7708/CEN criteria) supplied with monitor
    • Thoracic – 2 L/min with thoracic impactor, supplied with monitor
    • Respirable – 2.75 L/min with GS-3 Cyclone (meets ISO 7708/CEN criteria)

  • Create on-screen libraries of aerosol profiles and name data sets

  • 22+ hours run time with Li-Ion battery

  • Compact
    • 4.75 x 3.5 x 2.25 inches (12.1x 8.9 x 5.7 cm)
    • 1.12 lbs (0.51 kg)

  • Wireless connectivity

  • Large color touch display

  • Real-time rolling graphs

  • On-screen statistics
    • 8-hour TWA, MIN, MAX, AVG

  • Displays in ?g/m3 or mg/m3 (user selectable)



Common Uses
  • Silica
  • Diesel
  • Coal
  • Lead
  • Construction dust
  • Welding fumes
  • Wild fires
  • Concrete/cement
  • Nuisance dusts
  • Grinding dusts
  • Pharmaceuticals
  • Paint spray
  • Grain
  • Soil remediations
  • Wood/paper
  • Cadmium
  • Chromate
  • Tobacco smoke
  • Construction dust
  • Dry chemicals
  • Oil mists




HD-7204 Specifications

Sensors Sensor Type: 90° light scattering 880nm
Calibration: Calibrated against Gravimetric reference NIST traceable- SAE fine test dust ISO12103-1 A2 Fine Test Dust.
Accuracy: +/- 10% to filter gravimetric SAE fine test dust
Precision: +/- 0.02 mg/m3
Sensing Range: 0.001-500 mg/m 3 or 1-500,000 µg/m3
PM Size Range: 0.1 to 100um
Minimum Resolution: 1 ug/m3 (0.001 mg/m3 )
Zero Stability: +/- 0.001 mg/m3 (give µg/m3 equivalent also) over 24 hours using 10 second log rate.
Humidity: 95% non-condensing
Display 3.5”, 24-bit True color, Resistive Color Touch, with Auto Dimming
Real-Time Data Display Time: Hours, min., sec., 12hour & 24 hour
Date: MM/DD/YYYY, YY/MM/DD, DD/MM/YY Data Display: Concentrations (mg/m 3 , ug/m 3 ), Sampling Size Fraction of PM (OSHA TWA, AVE., MAX., MIN.), Start time, stop time, elapsed run time, Log rate, Flow, Real-Time Rolling Graphs (10 sec and 1 second), Personalized Named Data Sets, Unique Aerosol Profiles, Language Options, Battery Life Pump Faults, Flow Rate, In Feld Calibration Test, History of Data Sets
Sampling Flow Rate Sampling Flow Rate:1-5 Lpm
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.
Filter Cassette 37mm preloaded and weighted filter cassette
37mm 1um jeweled cassette for diesel particulates
25mm Preloaded cassette

Attachable Inlets

Respirable Inlet

GS-3 Cyclone: 2.75 LPM for 4µm cut point (OSHA silica rule) Meets ISO 7708/CEN criteria

GS-1 Cyclone: 2.0LPM for 4µm cut point (OSHA silica rule) 3 LPM for 3.5 cut point (MSHA silica standard) 1.7 or 2.0 LPM with DPM cassette (MSHA DPM sampling) Meets ISO 7708/CEN criteria
Inhalable Inlet IOM sampler: 2.0 LPM
Meets ISO 7708/CEN criteria
Thoracic Inlet Thoracic Sampling Inlet: 2.0LPM
Impactors PM10, PM5.0, PM4.0, PM2.5
Alarm Output Audible & Visual
Audible: 90db at 3ft
Ceiling and S.T.E.L Alarms, Pump Fail, and Low Battery
Recording Time 1 second to 15 days
Sampling Rate: 1 sec., 4 sec., 10 sec., and 60 sec
Data Storage 43,200 data points
Memory & Time
>5 years
Digital Output Micro USB 6.00’ (1.83m), A Male to Micro B Male, 28SWG, Shielded
Power Supply Wall Mount, Multi Bald Included, Voltage Input 100~240
VAC, Voltage Output 12V, Current Output 2A, CE, UL,CB, cUL, PSE, RCM
Battery Lithium Ion pack, 7.4 Volt 3350 mAh, 24.79 watts
Operating Time 22+ hours Running at 2.0LPM with IOM and no filter.
Operating & Storing Conditions Operating Temperature: 0 to 50°C
Storage Temperature: -20 to 70°C
Operational Humidity: 0-95% Non-Condensing
DUSTCOMM Pro Software Windows™ driven Windows 10 or greater
Maintenance Zero Calibration: Before each use
In Field Calibration Verification: Before each use
Flow Calibration: Before each use. Will automatically change when switching PM selective size.
Sensor Cleaning: By user when needed/ or during annual calibration
Factory Calibration: Annually or when instrument fails infield calibration verification.
Weight and Dimensions Dimensions (Case): 3.5” x 2.25” x 4.75”
Sensor Dimensions: 1.75” x 1.5”
Weight Instrument: 1.14lbs
Weight Sensor: 0.6lbs
Display dimensions: 3.5”
PM Sensor Sensor Type: 90° light scattering 88nm Calibrated against Gravimteric reference NIST traceable-SAE fine test dust ISO12103-1 A2 Fine Test Dust.
Tripod Mounting Optional Accessory





Two instruments in one
Personal Real-Time Aerosol Monitor and compliance for filter gravimetric sampling

  • Immediate display of airborne particulate concentration

  • Early warning audible alarm signal of approaching threshold limits

  • Validated interchangeable sampling inlet

  • In-line 37mm filter can be weighed or analyzed

  • Accurate size selective separation

  • Comprehensive time vs. concentration graphs with supplied

  • Single or multiple instruments can effortlessly transmit in real time to PC or laptop through wireless options