Riken Keiki model GX-8000

GX-8000 Portable Multi Gas Monitor

The Riken Keiki model GX-8000 sets a new industry standard for rugged, reliable, portable gas detection. It's tough, water proof design utilises features based on over 72 years of gas detection design experience, to assure reliability when protecting people and property from all kinds of harsh gas detection applications.

The GX-8000 is the latest sample drawing gas detector from Riken Keiki and consolidates several of the older classic models, such as the GX-111GX-111, NP-237HNP-237H, GX-7GX-7, GX-85NGX-85N, OX-62BOX-62B, OX-1OX-1, OX-415OX-415, OX-226OX-226, GP-226GP-226, etc... into one unified and improved specification. It's versatile design makes it simple to configure for 1-5 gases and the sensor compartment makes servicing sensors and filters quick and simple. Designed to international standards, CE marked and certified to ATEX / IECEx / MED (Wheelmark) approval, means it is perfectly suited to challenging industrial and marine applications.

The compact, light weight design makes it comfortable to carry using the neck / shoulder strap, and the optional waist strap allows for hands free use. The unit is easy to operate single-handedly and the powerful built-in pump has a fast 750ml / minute suction rate. A 30m length hose takes only (approx.) 30 seconds to sample a potentially hazardous or toxic gas.


  • Real-time, simultaneous detection of up to 5 ranges:
    Combustibles 100%VOL / 100%LEL, O2, H2S & CO
  • Large display with auto back lighting
  • Strong sample drawing capability (0.75L/min)
  • Loud 95dB alarm buzzer
  • 3 bright LED alarm windows
  • Intrinsically Safe ATEX Exia II CT4 & MED approved
  • IP67 water and dust resistant
  • Lithium-ion rechargeable battery
  • Compact, light weight, ergonomic design
  • Optional waist strap for hands free operation
  • Data logging as standard


  • Confined Space / Fire Services
  • Refineries / Petrochemical / Chemical Plants
  • Oil tankers / Gas Carrier / Bulk Carrier
  • Chemical Tanker / Coating Field
  • Water / Wastewater Treatment
  • Telecommunication Services
  • Power Plant / Fuel Cell Facilities
  • Utilities / Gas Plant / Gas Supplier Services
(CH4, i-C4H10,
H2, etc)*
0-100% VOL
(CH4, i-C4H10,
H2, etc)*
0- 0-100% LEL
0-40% VOL
Hydrogen Sulfide
Carbon Monoxide
Consolidates and Improves on the Classic Models
Type A 4 Gases
(5 Ranges)
NP-237HNP-237H, GX-111GX-111
Type B 4 Gases   GX-111GX-111
Type C 3 Gases     GX-7GX-7, GX-85NGX-85N
(with gas tube)
Type D 3 Gases     GX-7GX-7, GX-85NGX-85N
(with gas tube)
Type E 2 Gases
(3 Ranges)
Type F 2 Gases       GX-7GX-7, GX-85NGX-85N
Type LEL 1 Gas         GP-226GP-226
Type O2 1 Gas         OX-226OX-226, OX-415OX-415
OX-1OX-1, OX-62BOX-62B
• Please specify gas combinations when ordering.
* Combustible gases:
  • Standard: Hydrocarbons (HC) Iso-butane i-C4H10 / Methane CH4 / Hydrogen (H2) (specify when ordering)
  • Options: Toluene, n-Hexane, Methyl alcohol, Acetylene, MEK (factory set)