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The portable HAZ-SCANNER EPAS is a true environmental air station providing ambient air quality monitoring of critical EPA criteria pollutants and air parameters. EPAS is the only instrument on the market to offer true simultaneous monitoring of PM10 and PM2.5. EPAS is available in two kits: Basic and build your own (Foundation). Both offer the ability to configure with different toxic chemical sensors, size-selective impactors, and EPAS-specific meters to simultaneously measure up to 14 critical air parameters. Several wireless and networking options are available as well as datalogging capabilities. Graphing and reporting software is compatible with PC and Mac.

HAZ-SCANNER EPAS Application 1
HAZ-SCANNER EPAS Application 2
HAZ-SCANNER EPAS Application 3

HAZ-SCANNER Wireless EPAS Applications include:

  • Ambient/urban air quality monitoring
  • Hazardous incident response
  • Waste site remediation/land reclamation monitoring
  • Military/homeland security
  • Perimeter monitoring
  • Near roadway monitoring
Display    LCD
Operation    4 key splashproof membrane switch
Power    12V Absorption Glass MAT (AGM) rechargeable battery
Operating Time    8 hours on battery, continuous on AC or optional solar panel
Display Measurements    TWA, STEL, Max, Min
Recording Time    1 second to 21 weeks
Sampling Rate    1 second, 1 minute, 10 minute, 1 hour adjustable
Data Storage    454,545 data points
Sampling Pump    1-3 L/min
Digital Output    RS232 (PC), RS423 (Mac)
Software    PC or Mac compatible
Dimensions    15.2 x 35.6 x 25.4 cm (6 x 14 x 10 in)
Weight    5400 g (12 lbs)
Operating Temperature    -5 to 50°C (23 to 122°F)
Storage Temperature    -40 to 60°C (-4 to 140°F)
Humidity    95%, non-condensing (use inlet heater)
Auxiliary Analogue Output    0 to 2.5V DC ( channel for alternative meter)
Communication Options   
  • Wireless Radio Modem: 900 MHz (USA), 868MHz (Europe), up to 5 miles line of sight (optional)
  • WiFi Server Transmitter: 2.4/5 GHz, for up to 3 miles line of sight (optional)
  • Mobile Network: GPRS cellular router
  • Ethernet/Web: Wired LAN/WAN connection to web server
  • Wireless Network Software: Connect up to 8 EPAS to a central PC or Mac
Description Part Number
HAZ-SCANNER EPAS Basic Kit, includes:

PM10 impactor (measures TSP when no impactor is installed), CO sensor (0 to 10 ppm), NO2 sensor (0 to 5 ppm), EPAS system with internal sample pump and internal battery in a NEMA 4 enclosure* , universal battery charger (110-240 V AC, supplied with U.S., Euro, AUS, and UK adapter cables), external power connector cable, gas scrubber, precipitation/solar cap, impactor sleeve with compression plate and dust seal, and USB memory stick with instruction manual and HAZ-SCANNER Software. Basic EPAS can be expanded with up to 11 additional sensors - see below.

EPAS Foundation Kit, includes:

EPAS system with internal sample pump and internal battery in a NEMA 4 enclosure* , universal battery charger (110-240 V AC, supplied with U.S., Euro, AUS, and UK adapter cables), external power connector cable, and USB memory stick with instruction manual and HAZ-SCANNER Software. Requires configuration with up to 14 sensors - see below.


* EPAS is for use in general electrical classified areas; the unit/sensors/meters are NOT intrinsically safe for hazardous environments.

HAZ-SCANNER EPAS Number of Configurable Options
Sensor Category Basic Kit Available Slots Foundation Kit Available Slots
Particulate (PM) 1 2
Toxic Gas 6 8
Meters/Meteorological 4 4
EPAS Particulate Sensors
Particulate Sensor Range Part Number
PM1.0 1μm 770-531
PM2.5 2.5μm 770-532
PM10 10μm 770-530
EPAS Gas Sensors
Gas Sensor Technology Range Part Number
VOCs PID 0 to 50,000 ppb (0 to 50 ppm) 770-543
Ammonia NH3 Electrochemical 0 to 100 ppm 770-555
Carbon Dioxide CO2 NDIR 0 to 5000 ppm 770-542
Carbon Monoxide CO Electrochemical 0 to 10 ppm 770-544
Chlorine Cl2 Electrochemical 0 to 100 ppm 770-552
Ethylene Oxide C2H4O Electrochemical 0 to 1500 ppm 770-558
Methane CH4 NDIR 0 to 1%vol, 0-10,000 ppm, 0 to 20% lel 770-549
Hydrocarbons HC (non-Methane) NDIR Calibrated for 0 to 20% lel of selected gas 770-550
Hydrogen Chloride HCl Electrochemical 0 to 100 ppm 770-556
Hydrogen Cyanide HCN Electrochemical 0 to 100 ppm 770-553
Hydrogen Sulphide H2S Electrochemical 0 to 25 ppm 770-554
Nitric Oxide NO Electrochemical 0 to 5000 ppb 770-551
Nitrogen Dioxide NO2 Electrochemical 0 to 5000 ppb (0 to 5 ppm) 770-545
Nitric Oxide NO and Nitrogen Dioxide NO2 Calculated values 0 to 10,000 ppb 770-551-1
Oxygen O2 Electrochemical 0 to 30% vol 770-546
Ozone O3 Metal Oxide Semiconductor 0 to 150 ppb ( 0 to 0.15 ppm) or
0 to 500 ppb (0 to 0.5 ppm)
Phosphine PH3 Electrochemical 0 to 100 ppm 770-557
Sulphur Dioxide SO2 Electrochemical 0 to 5000 ppb (10 to 500 ppb for ambient applications) 770-548
EPAS Meter/Meteorological Sensors
Sensor Technology Range Part Number
Rainfall/Precipitation Rain Gauge 0 to 25 cm (5 inches) daily 770-540
Relative Humidity (RH)
-20 to 60°C (-40 to 140°F)
0 to 100% RH
Solar Radiance Intensity Photodiode 0 to 1800 W/square metre (W/m2) 770-539
Sound Class 2 Sound Level Meter 30 to 135 decibels (dB) 770-580
Atomic/Nuclear Radiation Geiger Counter 1 to 19,999 counts per minute (cpm) or 0.001 to 100 milliRad/hr 770-534
Wind Speed and Direction 3 cup anemometer and continuous rotation potentiometric wind direction vane Speed: 0 to 125 mph (0 to 55.9 m/s, 0 to 201 km/h)
Direction: 5 to 355 degrees
Barometric Pressure* Piezo Resistive 28.25 to 30.75 in Hg 770-533
Dew Point Temperature** Software calculation from RH and temperature -16 to 50°C (3.2 to 122°F) 770-535

*   Due to its location this sensor also counts towards the maximum number of 'gas sensors', as well as the maximum number of 'meters/meteorlogical sensors'
** Software calculation - does not count towards the maximum number of 'meter/meteorlogical sensors'

EPAS Accessories
Description Part Number
Rain Trap 770-579
Calibration Adaptor for Gas Sensor 770-561
Zeroing Accessory 770-214
Precipitation Cap 770-578
Transmitter for Use with Radio Modem - range 5 miles 770-506
Radio Modem - range 5 miles 770-505X5
Wireless Network Software 770-507
WiFi Server Transmitter - 2.4GHz frequency 770-508
GSM Module (Cellular Router) 770-509
Rotameter - 2 L/min 770-514
Acid Gas Scrubber 770-513
Particulate Calibration Standard 770-515
Impactor Sleeve 770-516
Impactor Grease 770-211
Conditioning Inlet Heater 770-517
Tripod Stand, 1 to 2 m (3 to 6 ft) 770-518
Tripod Stand - Extended Height 770-518-E
Support Kit for Tripod Stand 770-518-W
AGM Lead-Acid Battery Pack 770-519
Single Charger 770-520
External Power Connector Cable 770-521
Car Power Adaptor 770-522
External Backup Battery 770-523
External Backup Battery - Adaptor Cable 770-524
External Backup Battery - Single Charger 770-525
Solar Panel - 100W 770-526
External Audible and Visual Alarms 770-527
Ethernet Connection Cable 770-528
EPAS Datasheet   Environmental Perimeter Air Station (EPAS) Manual   Environmental Perimeter Air Station (EPAS) Brochure