Skip to product information
1 of 3

Environmental Solutions

Riken Keiki GX-3R

Riken Keiki GX-3R

Compact size and light weight are crucial factors when working in confined spaces. This is precisely why Riken Keiki developed the GX-3R : the smallest and lightest 4-gas monitor available on the market!

The Riken Keiki GX-3R weighs only 100 grams, ensuring that it never gets in the way of the user. Even if your company's safety policy requires gas detection in the breathing zone (a ten-inch radius around the mouth and nose), the GX-3R fits comfortably. Before the introduction of the GX-3R, only a few single-gas detectors were small enough to be worn on the collar. Additionally, the GX-3R boasts an impressive 25 hours of battery life and is both waterproof and dustproof (IP66/68 rating), making it suitable for harsh conditions.

Despite its exceptionally small size, the GX-3R remains extremely robust. It comes standard with black rubber impact protection. Additionally, calibration and bump testing are simplified with the SDM-3R bump test and calibration station. An intriguing accessory is the RP-3R external pump, which is equally compact. This pump allows a temporary conversion of the GX-3R to a pumped model, allowing you to empty a room before entering it using your personal gas detector.

Key features

  • Smallest and lightest multi-gas detector
  • Simple 2-button operation
  • Adjustable alarms
  • Impact-resistant rubber holster
  • Large backlit LCD display
  • On-site changeable sensors and filters
  • Unobtrusive mode for law enforcement
  • Optional snap-on sampling pump with its own battery
  • 3 Year Warranty


  • Personal monitoring
  • Confined Spaces
  • (Petro)chemical industry
  • Utilities
  • Sewerage and wastewater treatment
  • Government, fire brigade and emergency services
  • Construction
View full details