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RAE Systems

RAE Systems QRAE 3 Gas Monitor (4-Gas O2, LEL, CO, H2S)

RAE Systems QRAE 3 Gas Monitor (4-Gas O2, LEL, CO, H2S)

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Regular price $880.68 USD
Regular price $1,054.00 USD Sale price $880.68 USD
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The QRAE 3 is a full featured compact 4-gas monitor that provides detection and monitoring of Oxygen (O2), Combustibles/Methane (LEL), Carbon Monoxide (CO), and Hydrogen Sulfide (H2S).


  • Available in Diffusion or Pumped version
  • IP-65/67 water- and dust-resistant case
  • Strong, protective, concussion-proof design
  • Real-time gas concentration readings and alarm status enabled by state-of-the-art wireless technology
  • Unmistakable five-way local and remote wireless notification of alarm conditions
  • Large graphical display icon-driven user interface through intuitive, simple-to-operate two-button user interface.
  • Multi-language support: 18 languages encoded
  • Easy accessto pump,sensors, filter and battery compartment



Confined space entry and general safety and compliance in:

  • Industrial safety
  • Oil and gas
  • Fire ground “Toxic Twins” detection
  • Environmental
  • Fire and Emergency response
  • Chemical
  • Pharmaceutical
  • Telecommunications

Size Diffusion: 5.5" H x 3.2" W x 1.5" W (140 mm x 82 mm x 42 mm)
Pumped: 5.7" H x 3.2" W x 1.7" D (145 mm x 82 mm x 42 mm)
Weight Diffusion: 12.9 oz (365 g with Li-ion battery and clip)
Pumped: 14.5 oz (410 g with Li-ion battery,clip, and external filter)
Sensors Up to four field-replaceable sensors
LEL: Catalytic bead for combustibles (built-in Correction Factor library)
Oxygen: Liquid electrolyte O2
Toxic: electrochemical for H2S, CO, SO2, HCN
Rechargeable Li-ion Battery Running Time Diffusion: 14 hours continuous non-wireless, 10 hours wireless
Pumped: 11 hours non-wireless, 8 hours wireless
Display Graphic monochrome graphic display (128 x 80)
Automatic or on-demand screen rotation
Display Size 1.57" W x 1.06" H (40 x 27 mm) with backlighting
Keypad Two-button operation
Direct Readout Real-time reading of gas concentrations
Battery status
Pump status (if equipped with pump)
Wireless on/off and wireless reception quality
STEL, TWA, peak and minimum values
Man down and policy enforcement indicators
Alarms Multi-tone 95dB buzzer (at 11.8"/ 30 cm, typical), vibration alarm, and flashing red LEDs and on-screen indication of alarm conditions
Latching, non latching or manual override
Additional diagnostic alarm and display message for low battery
Pump stall alarm (pumped version only)
Man Down Alarm with pre-alarm and real-time remote wireless notification
Datalogging Continuous datalogging (3 monthsfor 4 sensors at 1-minute intervals, 24/7)
User-configurable datalogging intervals (from 1 to 3,600 seconds)
Communication & Data Download Data download and instrumentset-up and upgrades on PC via Travel Charger
Wireless data and status transmission via built-in RF modem (optional)
Wireless Network Mesh Rae Systems Dedicated Wireless Network
Frequency ISM license-free bands, 868 MHz or 900 MHz
Wireless Range (Typical) EchoView Host: LOS > 650 ft (200 m)3
ProRAE Guardian & Mesh Reader: LOS > 650 ft (200 m)3
ProRAE Guardian & RAELink3: LOS > 30 ft (10 m)3
EM Immunity EMI and ESD test: 100MHz to 1GHz 30V/m, no alarm
Contact: ±4kV
Air: ±8kV, no alarm
IP Rating Pumped: IP-65
Diffusion: IP-67
Calibration Two-point calibration for zero and span (manual or automatic with AutoRAE 2)
Sampling Pump Built-in pump or diffusion
Can sample through tubing up to 98 ft (30 m)
Hazardous Area Approval US and Canada: classified for use in ClassI, Division 1, Groups A, B, C and D
Europe: IECEx/ATEX (II 1G Exia IIC T4) (pending)
Temperature -4°to 122°F (-20°to 50° C) for T4 temperature code
Humidity 0% to 95% relative humidity (non-condensing)
Languages  Arabic, Chinese, Czech, Dutch, English,French, German, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, and Swedish (language must be changed through ProRAE Studio II)

Price is for Monitor Only with Basic Accessories.

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