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RAE Systems QRAE 3 (Four Gas Monitor)

RAE Systems QRAE 3 (Four Gas Monitor)

The RAE Systems QRAE 3 is a compact, rugged, and highly reliable four-gas monitor designed to detect oxygen (O₂), combustible gases (LEL), and a range of toxic gases such as hydrogen sulfide (H₂S) and carbon monoxide (CO). Ideal for confined space entry, industrial hygiene, and emergency response, the QRAE 3 offers real-time gas detection with optional wireless connectivity for enhanced safety and situational awareness. Its simple two-button interface, compact form factor, and customizable sensor configurations make it a trusted choice for professionals across multiple industries. Need a short-term solution? Rent the QRAE 3 from MFE Inspection Solutions and get dependable gas detection when and where you need it.

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 Four 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. This four gas monitor 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

Sensors	Up 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 Type	Rechargeable Li-ion battery
Battery Runtime	14 hours (non-wireless, diffusion) 11 hours (non-wireless, pumped) 10 hours (wireless, diffusion) 8 hours (wireless, pumped)

Display	Monochrome 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
Keypad	Two-button operation for simple use
Readout	Real-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 Logging	Continuous datalogging for 3 months (4 sensors at 1-minute intervals)
Configurable Intervals	User-configurable intervals (1 to 3,600 seconds)
Data Download	Data download and instrument setup via Travel Charger
Wireless Data Transmission	Via built-in RF modem (optional), wireless status transmission

Wireless Network	Mesh RAE Systems Dedicated Wireless Network
Wireless Frequency	ISM license-free band (868 MHz or 900 MHz)
Approvals	FCC 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 Rating	Pumped: IP-65, Diffusion: IP-67