Environmental Monitoring Equipment & Supplies • Sales, Rental & Service by Enviro-Equipment — Charlotte, North Carolina USA

  • Measures combustible gases (0-100% LEL), oxygen (0-30%), carbon monoxide (0-500ppm), hydrogen sulfide (0-100ppm).
  • Rechargeable Li-ion battery ~11 hour runtime typical
  • Datalogging capability (3 months for 4 sensors at 1-minute intervals, 24/7)
  • Built-in sampling pump 300 cc/min, can sample through tubing up to 98 ft (30 m) long.
Title Daily Rate Weekly Rate Monthly Rate
RAE Systems QRAE 3 (2-GAS) Rental $60.00 $145.00 $375.00
RAE Systems QRAE 3 (4-GAS) Rental $75.00 $175.00 $475.00

The QRAE 3 is RAE Systems most advanced compact monitor for one to four gases. The portable QRAE 3 can detect and monitor oxygen (O2), combustibles (LEL), and toxic gases such as carbon monoxide (CO) and hydrogen sulfide (H2S)  -- This ability to work in real-time allows the QRAE 3 to help first responders and safety officers to make faster, more informed decisions to protect lives and property.  The QRAE 3's design allows for simple maintenance with easily accessible sensors and sampling pump.  User configurable audible and visible alarms give you confidence that your workers will be alerted of dangerous conditions before they become an issue.

Items Included:
  • QRAE 3 Four Gas Meter
  • Sensors: carbon monoxide, hydrogen sulfide, combustible gases (LEL), oxygen
  • Data Download Cable
  • ProRAE Studio II Software
  • Instruction Manual
  • Battery Charger
  • Tubing
  • Calibration Record
  • Spare Filter





0 to 30%


Combustible Gas

0 to 100% LEL

1% LEL

Carbon Monoxide

0 to 500 ppm

1 ppm

Hydrogen Sulfide

0 to 100 ppm

0.1 ppm


5.7" H x 3.2" W x 1.7" D (145 mm x 82 mm x 42 mm)


14.5 oz (410 g with Li-ion battery, clip, and external filter)


Rechargeable Li-ion

Operating Period

11 hours continuous

Display Graphic

Monochrome graphic display (128 x 80) Display size: 1.57" W x 1.06" H (40 x 27 mm) with backlighting Automatic or on-demand screen rotation


Two-button operation

Direct Readout

  • Real-time reading of gas concentrations
  • Battery status
  • Pump status
  • STEL, TWA, peak, and minimum values
  • Man Down and policy enforcement indicators


  • Multi-tone 95dB buzzer (at 11.8"/ 30 cm, typical), vibration alarm, and flashing red LEDs and on-screen indication of alarm conditions
  • Alarms: latching, non latching or manual override
  • Additional diagnostic alarm and display message for low battery
  • Pump stall alarm
  • Man Down Alarm with pre-alarm and real-time remote wireless notification


  • Continuous datalogging (3 months for 4 sensors at 1-minute intervals, 24/7)
  • User-configurable datalogging intervals (from 1 to 3,600 seconds)

Data Download

Data download and instrument set-up and upgrades on PC via Travel Charger

EM Immunity

EMI and ESD test: 100 MHz to 1 GHz 30 V/m, no alarm Contact ± 4 kV Air ± 8 kV, no alarm

IP Rating



Two-point calibration for zero and span

Sampling Pump

300 cc/min, Can sample through tubing up to 98 ft (30 m)

Hazardous Area Approval

US and Canada: classified for use in Class I, Division 1, Groups A, B, C, and D
Europe: IECEx/ATEX (II 1G Ex ia IIC T4)(pending)


-4° to 122° F (-20° to 50° C) for T4 temperature code


0% to 95% relative humidity (non-condensing)


Stainless-steel alligator clip


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)