Riken Keiki 8000 Series

Gas Detectors

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Manufacturer: Riken Keiki

Portable Gas Detectors Model RX-8000/RX-8500/RX-8700


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Advanced functions and durability

  • Capable of measuring combustible gas (HC or CH4) from low to high concentrations
    The easy-to-use auto range switching feature automatically switches to the vol% range if the combustible gas concentration measured exceeds 100 %LEL.
  • Infrared sensor maintains high accuracy even in inert gas or N2 atmospheres
    Features infrared type combustible gas sensor unaffected by oxygen concentrations during measurement. Its high selectivity also means it’s virtually unaffected by interference from other coexisting gases or water vapor.
  • Intrinsically safe explosion-proof construction
    The Ex ia IIC T4 X explosion-proof rating allows use even in Zone 0 hazardous areas. Protection rating equivalent to IP67.
  • Complies with SOLAS convention amendments
    Meets the requirements of amended SOLAS convention for portable gas detectors carried by vessels.
    ◆ Capable of measuring combustible gas (HC or CH4) and oxygen (O2) simultaneously
    ◆ Intrinsically safe explosion-proof construction
    ◆ Continuous operation for at least 10 hours



  • Able to measure HC/CH4 with high accuracy even in inert gas or N2 atmospheres


  • A single unit supports all operations within LNG vessels
  • Target gases: Combustible gas (CH4) - Oxygen (O2) - Carbon monoxide (CO) - Carbon dioxide (CO2)


  • Capable of high-concentration H2S measurement (Measurement mode switching with one push of a button)
  • Target gases: Combustible gas (HC) - Oxygen (O2) - Hydrogen sulfide (H2S)


Via Magenta, 77/16A
20017 Rho (MI) - Italy
Phone +39 02 3340 0846
VAT: IT04126380155
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Via Magenta, 77/16A
Rho 20017, Italy
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+39 02 3340 0846

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