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RIKEN KEIKI GX-3R Gas Detector - Advanced Microsensor Technology for Comprehensive Gas Detection

The RIKEN KEIKI GX-3R is the pinnacle of modern gas detection technology, featuring innovative microsensors that provide reliable and accurate monitoring in the smallest and lightest 4-gas monitor on the market. Designed to detect LEL (Lower Explosive Limit), O2 (Oxygen), H2S (Hydrogen Sulfide), and CO (Carbon Monoxide) simultaneously, the GX-3R offers enhanced safety and performance in hazardous environments.


Key Features:

  • Advanced LEL Sensor: The unique LEL sensor is designed with dual active filaments within a single sensor to increase resistance to silicone poisoning. If one filament becomes compromised, the second filament automatically takes over, ensuring continuous protection.
  • Long-Life O2 Sensor: The electrochemical O2 sensor boasts a 5-year lifespan, offering long-term reliability and reducing maintenance costs.
  • H2S and CO Combo Microsensor: For added efficiency, H2S and CO are detected through a single combination microsensor, saving space and reducing the size of the detector.
  • Compact and Lightweight: As the smallest and lightest 4-gas monitor available, the GX-3R is designed for maximum portability without compromising on performance.
  • Robust Alarm Systems: Equipped with dual audible alarm ports (95 dB @ 30 cm), three visual alarm LEDs, and a vibration alarm, ensuring that alerts are unmistakable in any environment.
  • IP68 Waterproof and Dustproof: The GX-3R’s design is IP68 rated, providing complete protection against dust and prolonged immersion in water, making it ideal for harsh industrial settings.
  • Data Logging and Compliance: Features large capacity data logging with standard storage for 8 alarm trends, a log time range of 10 to 300 hours, and 100 calibration records, helping to maintain compliance with safety regulations.
  • Extended Operation Time: Powered by Lithium-ion batteries, the GX-3R delivers up to 25 hours of continuous operation, ensuring that it remains functional throughout long work shifts.
  • Durable and Impact Resistant: Built to withstand tough conditions, the GX-3R has an impact-resistant body that ensures longevity in demanding environments.
  • Comprehensive Readouts: Includes STEL (Short-Term Exposure Limit) and TWA (Time-Weighted Average) readouts for detailed exposure analysis.
  • Intrinsically Safe and Certified: The GX-3R is IECEx and ATEX approved, making it safe for use in explosive atmospheres.


The RIKEN KEIKI GX-3R is the ideal solution for professionals needing a reliable, durable, and efficient gas detection system. With its advanced technology and compact design, it is perfect for use in industries such as oil & gas, chemical processing, and confined space entry, where safety is paramount.

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