QRAE II (Pumped)

Manufacturer: RAE Systems
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QRAE II Pump is a full-featured, rugged yet compact, one- to four-sensor gas detector with built-in powerful pump. QRAE II Pump is designed to provide continuous exposure monitoring of oxygen, hydrogen sulfide, carbon monoxide, and combustible gases for workers in hazardous environments. The AutoRAE Lite automatic calibration station for QRAE II Pump enables fast and easy bump testing and calibration of the monitor, streamlines the data download process, and saves calibration gas to deliver the lowest cost of ownership on the market.

Key Features

  • Patented SPE O2™ Oxygen sensor unique features:
    • Lead-free design that complies with RoHS directive
    • Extended life compared to lead-type electrochemical oxygen sensors, resulting in a low cost of ownership
    • Leak-free design, minimizing downtime
  • Best EMI/RFI immunity technology for products in its class, eliminating radio interference
  • Easy access to pump, sensors, filter and battery compartment without exposing electronic components to potential damage
  • IP-65 water- and dust-resistant case
  • Strong, protective, concussion-proof design


  • 5" L x 2.8" W x 2" H (12.5cm x 7.2cm x 5.0cm)


  • 12 oz (350 g)


  • Catalytic bead for combustibles
  • Oxygen: SPE O2™ (non-consumable Solid Polymer Electrolyte technology)
  • Toxic: electrochemical for H2S or CO

Sensor Specifications

  Range  Resolution 
Oxygen 0 to 30.0% 0.10%
Combustible 0 to 100% LEL 1% LEL
Carbon Monoxide 0 to 1000 ppm 1 ppm
Hydrogen Sulfide 0 to 100 ppm 0.1 ppm



  • Interchangeable Lithium-ion or alkaline battery packs

Operating Period

  • Up to 10 hours with Lithium-ion battery, up to 8 hours with alkaline battery

Display Graphic

  • 4 lines, with LED automatic back light in dim light or alarm condition


  • Two-button operation

Direct Readout

  • Instant reading from up to four sensors
  • Oxygen as percentage by volume
  • Combustible gas as percentage of lower explosive limit (LEL), scalable using correction factors
  • Toxic gases in parts per million
  • High and low values for all gases
  • Battery and shutdown voltage
  • Date, time, elapsed time, temperature


  • 95dB buzzer (at 30 cm, typical), vibration alarm, and flashing red LED:
    • High: 3 beeps, vibration and flashes per second
    • Low: 2 beeps, vibration and flashes per second
    • STEL and TWA: 1 beep, vibration and flash per second
    • Alarms: latching with manual override or automatic reset
    • Additional diagnostic alarm and display message for low battery
    • Pump stall alarm


  • Highly resistant to EMI/RFI. Compliant with EMC directive 2004/108/EC additional +60 volts/meter

IP Rating

  • IP-65


  • Standard 12 days at one-minute intervals


  • Two-point calibration for zero and span
  • Manual, or automatic with the AutoRAE Lite

Sampling Pump

  • Internal pump 300 cc/min

Hazardous Area Approval

  • US and Canada: CI, D1, Groups A, B, C, D, T4
  • Europe: ATEX II 2G EEx ia d IIc T4
  • IECEX: Ex ia d II C T4


  • -4° to 113° F (-20° to 50° C) for T4 temperature code


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


  • Stainless-steel alligator clip


  • Full 2-year warranty, including all sensors
Specifications are subject to change

  • Oil & Gas
  • HazMat
  • Industrial Safety
  • Environmental