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Multi Gas Detector


Built around high-quality micro-sensor technology, the GX-2012 is Riken's smallest personal 5 sensor Gas Monitor with a built in sample Pump. Weighing only 360g, two operating modes: Normal (for confined spaces) and Barhole.The GX-2012 can monitor the standard confined space gases (LEL Combustibles, Oxygen Content, Carbon Monoxide, and Hydrogen Sulfide), and it can also measure 100% Volume Methane and dynamically display either % LEL, or % Volume with its auto-ranging. The GX-2012 can be used for gas line purge testing as well as standard safety testing.

  • Features
  • Applications
  • Approvals
  • Gas Combination
  • Specification
  • Accessories
  • Monitors LEL, and % Volume Combustibles, O2, CO and H2S (GX-2012)
  • 0 to 100% Volume Methane option
  • Auto-ranging display of % LEL and % Volume
  • Barhole test mode
  • Snap-logging-on demand Data recording
  • Pump pause on demand extends battery life
  • Vibration, Visual, and Audible Alarms
  • Lithium ion or Alkaline power source (interchangeable)
  • Up to 600 hours of Data Logging with Alarm trends
  • Intrinsically safe, ATEX / IECEx / CE
  • High Dust and Water resistance design
  • Personal Monitoring
  • Confined Spaces
  • Refineries / Petrochemical / Wastewater Treatment
  • Utilities
  • Chemical Plants
  • Hazardous Material
  • Waste Water
  • Fire Services
  • Mining
  • ATEX II 1G Ex ia IIC T4
  • IECEx II 1G Ex ia IIC T4
  • TIIS
  • CE
Five Sensor Type A LEL / % Vol / O2 / CO / H2S
Four Sensor Type B LEL / O2 / H2S / CO
Three Sensor Type C
Type D
Type E
LEL / O2 / H2S
LEL / O2 / CO
LEL / % Vol / O2
Two sensor Type F LEL / O2
Gas Detected Combustible Gases
(Methane as standard)
% Volume
Hydrogen sulfide
Carbon monoxide
Detection Principle Catalytic combustion Thermal conductivity Galvanic cell Electro-chemical cell
Detection Range 0∼100% LEL 0∼100% Vol. 0∼40% Vol. 0∼100 ppm 0∼500 ppm
Sampling Method Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
Display Digital LCD with 7 segments, auto backlight during alarm
Alarm Sounds 95dB at 30cm
Preset Alarms
(User Adjustable)
1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm 100% LEL
No alarms for
% Vol. CH4
Low alarm 19.5%
High alarm 23.5%
Over alarm 40.0%
1st 5ppm
2nd 30 ppm
TWA 10 ppm
STEL 15 ppm
Over 100 ppm
1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm
Alarm Types Gas alarms : 1st and 2nd, STEL, TWA (user adjustable) and OVER
Trouble alarms : Sensor connection, low battery, low flow, circuit trouble and calibration error
Alarm Methods Gas alarms : Flashing lights, two tone buzzer, and vibration
Trouble alarms : Flashing lights, trouble displayed, intermittent buzzer, and vibration
Operating Temp.& Humidity -20°C to +50°C (-4°F to 122°F)
0 to 95% RH, non-condensing
Response Time Within 30 seconds (T90)
Continuous Operation Alkaline battery : 15 hours
Li-Ion battery : 10 hours
Power Source Li-Ion battery pack, or 3 "AA" Alkaline battery pack; interchangeable
Safety Rating ATEX II 1G Ex ia IIC T4
IECEx II 1G Ex ia IIC T4
Dimension & Weight Approx. 173(H) x 71 (W) x 43(D) mm, approx. 360g (include 3 "AA" Alkaline batteries)
Standard Accessories Belt Clip
Rubber nozzele
Wrist strap
Alkaline battery pack
Optional Accessories SDM - 2012 calibration stations
Sample draw hoses
Li-Ion battery pack
Alkaline dry cell (3-AA size)
Datalogging software
Standard Accessories
  • Alkaline battery pack
  • Rubber Nozzle
  • Wrist Strap
  • Belt
Optional Accessories
  • SDM-2012
    Stand Alone Calibration Station
  • Charger BC-2012
    Ac adapter for Charger BC-2012

A Single module calibration station for the GX-2012 and GX-2012GT portable gas monitors that can calibrate, bump test, charge, and archive data.

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