RAE Systems QRAE 3 (Four Gas Monitor)

The RAE Systems QRAE 3 (Four Gas Monitor) offers comprehensive monitoring of four gases simultaneously, with advanced features for accurate and efficient detection.

Equipment Type: Toxic Air Monitoring

Benefits

  • Four-gas monitor for detecting a range of toxic and combustible gases
  • Used in confined spaces and hazardous environments for worker safety
  • Monitors gases like oxygen, carbon monoxide, hydrogen sulfide, and explosive gases
  • Fireground “toxic twins” detection
  • Confined spaces
  • Industrial environments 
  • Pipelines
  • Chemical plants
  • Underground mines
  • Gas storage facilities
  • HVAC systems
  • Laboratories handling volatile chemicals
  • Chemical plants
  • Oil & gas
  • Environmental
  • Emergency response
  • Power & utilities
  • Maritime
  • Mining

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QRAE 3: Wireless 4-Gas Monitor

The QRAE 3 is a versatile and reliable gas detection solution that stands out from earlier QRAE models with its enhanced wireless capabilities and compact, durable design. It provides real-time monitoring for one to four gases—including oxygen, combustibles, and various toxic gases—ensuring improved incident visibility and quicker response times.

Ideal for industrial safety, environmental monitoring, and emergency response, the QRAE 3 combines ease of use with robust performance to meet diverse safety needs.

QRAE 3 Key Features

The QRAE 3 is equipped with a range of advanced features designed to enhance safety and efficiency in gas detection.

Its user-friendly design and robust functionality make it a reliable choice for various applications.

Features

  • Wireless real-time gas concentration readings and alarm status
  • Man Down Alarm with remote wireless notification
  • Easy maintenance with field-replaceable sensors and pump
  • Large graphical display with 180º rotation
  • Available in diffusion and pumped models
  • IP-65/67 water- and dust-resistant casing
  • Multi-language support with 18 languages encoded
  • Compatible with AutoRAE 2 automatic test and calibration system

Gases Monitored by the QRAE 3

The QRAE 3 provides comprehensive detection and monitoring for various gases to ensure safety in diverse environments.

The system can monitor for the following gases with their respective range and resolution:

  • Oxygen (O₂): 0 to 30.0%, 0.1%
  • Combustibles (LEL): 0 to 100% LEL, 1% LEL
  • Hydrogen Sulfide (H₂S): 0 to 100 ppm, 0.1 ppm
  • Carbon Monoxide (CO): 0 to 500 ppm, 1 ppm
  • Sulfur Dioxide (SO₂): 0 to 20 ppm, 0.1 ppm
  • Hydrogen Cyanide (HCN): 0 to 50 ppm, 0.2 ppm
  • Ammonia (NH₃): 0 to 100 ppm, 1 ppm
  • Phosphine (PH₃): 0 to 20 ppm, 0.01 ppm
  • Chlorine (Cl₂): 0 to 50 ppm, 0.05 ppm
  • Nitrogen Dioxide (NO₂): 0 to 50 ppm, 0.1 ppm
 

Technical Specifications

Size (Diffusion)5.5″ H x 3.2″ W x 1.5″ D (140 mm x 82 mm x 42 mm)
Size (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
Weight (Pumped)14.5 oz (410 g) with Li-ion battery, clip, and external filter
SensorsUp to 4 field-replaceable sensors:
  • LEL: Catalytic bead for
  • combustibles (built-in Correction Factor library)
  • Oxygen: Liquid electrolyte O2
  • Toxic: Electrochemical for H2S, CO, SO2, HCN
  • Battery TypeRechargeable Li-ion battery
    Battery Runtime
  • 14 hours (non-wireless, diffusion)
  • 11 hours (non-wireless, pumped)
  • 10 hours (wireless, diffusion)
  • 8 hours (wireless, pumped)
  • DisplayMonochrome graphic display (128 x 80), size: 1.57″ W x 1.06″ H (40 x 27 mm), with backlighting and automatic/on-demand screen rotation
    KeypadTwo-button operation for simple use
    ReadoutReal-time gas concentrations, battery status, pump status (if equipped), wireless on/off and reception quality, STEL, TWA, peak, minimum values, Man Down, and policy enforcement indicators
    Data LoggingContinuous datalogging for 3 months (4 sensors at 1-minute intervals)
    Configurable IntervalsUser-configurable intervals (1 to 3,600 seconds)
    Data DownloadData download and instrument setup via Travel Charger
    Wireless Data TransmissionVia built-in RF modem (optional), wireless status transmission
    Wireless NetworkMesh RAE Systems Dedicated Wireless Network
    Wireless FrequencyISM license-free band (868 MHz or 900 MHz)
    ApprovalsFCC Part 15, CE R&TTE, ANATEL
    Wireless Range
  • EchoView Host: > 650 ft (200 m) LOS
  • ProRAE Guardian & RAEMesh Reader: > 650 ft (200 m) LOS
  • ProRAE Guardian & RAELink3 Mesh: > 330 ft (100 m) LOS
  • EM Immunity
  • EMI & ESD test: 100 MHz to 1 GHz, 30V/m, no alarm
  • Contact: ±4kV, Air: ±8kV, no alarm
  • IP RatingPumped: IP-65, Diffusion: IP-67

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