Riken Keiki GX-3R 4 Gas Monitor, RKK-GX-3RMM(50)

GX-3R Compact 4 Gas Confined Space Monitor – UK

The GX-3R is one of the smallest and lightest personal 4-gas monitors, designed for confined spaces, industrial sites, and marine environments. Developed by Riken Keiki, it weighs just 100g and measures 58 × 65 × 26 mm, making it easy to wear in the breathing zone without interfering with work. It monitors combustible gases (LEL), oxygen (O₂), carbon monoxide (CO), and hydrogen sulphide (H₂S) in real time, providing reliable protection in hazardous conditions.

Key Features

• Ultra-Compact & Lightweight – Only 100g and small enough to fit comfortably on the lapel or in the breathing zone.

• Multi-Gas Detection – Detects LEL, O₂, CO, and H₂S for complete personal safety.

• Long-Life R Sensors – Includes a 3-year warranty; optional hydrogen-compensated CO sensor for hydrogen-rich environments.

• Dual-Filament LEL Sensor – Up to 40× more resistant to silicone poisoning.

• Rugged & Waterproof – IP66/68 rated, drop-tested to 7 metres, with replaceable rubber boot for extra durability.

• High-Visibility Alarms – Audible (95dB at 30cm), visual, and vibration alerts for noisy workplaces.

• Extended Battery Life – Continuous operation up to 40 hours; fast recharge in just 3 hours.

• Multiple Alarm Settings – Three pre-set alarm levels per gas plus an over-range alarm for EH40 exposure limit compliance.

• Data Logging – Internal logger stores up to 3,600 events and 300 hours of data, accessible via IrDA.

• Extreme Temperature Operation – Works from -20°C to +50°C continuously and -40°C to +60°C intermittently.

• Marine Approved – MED WheelMark approved for use on vessels worldwide.

• Optional Accessories – Multi-unit chargers, SDM-3R calibration station, and data logger software available.

• Certifications – ATEX, IECEx, and MED (marine version available).

GX-3R Technical Specifications