RKI Instruments GX-2012 4 Sensor Multi-Gas Confined Space Gas Detector w/ Alkaline Battery Pack 72-0290-22-B

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RKI Instruments

GX-2012 4 Sensor Multi-Gas Confined Space Gas Detector w/ Alkaline Battery Pack 72-0290-22-B

With the GX-2012; you have multiple tools in one instrument. Having 3 operating modes; the GX-2012 can be used for confined space; safety monitoring in it’s Normal Operating mode; for leak investigation in Leak Check mode; and for underground leak checking in Bar Hole mode. The GX-2012’s large LCD display shows all gas readings; battery level; current time; and will automatically backlight in alarm conditions.


  • Monitors ppm LEL; % volume methane; O2; CO and H2S.
  • 0 to 100% volume methane option.
  • Auto-ranging display of % LEL and % volume.
  • 3 Operating modes: Normal; leak check; & bar hole.
  • PPM leak detector.
  • Adjustable display ranges.
  • Visual / audible pulses change with gas concentration.
  • CO display in leak check mode.
  • Bar hole test mode for underground leak checks.
  • Internal sample drawing pump with up to 50'.
  • Vibration; visual; and audible alarms.
  • Automatic backlight during alarms.
  • Lithium ion or alkaline battery packs (interchangeable).
  • Intrinsically safe; ATEX/IECEx/CE or CSA/CE (Optional).


  • Personal monitoring.
  • Confined space entry.
  • Refineries / petrochemical.
  • Chemical plants.
  • Hazardous material.
  • Water / wastewater treatment.
  • Fire services.
  • Mining.


Gas Detection Specifications (Part 1)
Gas DetectedDetection PrincipleDetection Range
Combustible Gases (Methane as standard)Catalytic combustion0 ~ 100% LEL 0 ~ 500 / 1;000 / 2;000 / 5;000 ppm
% Volume MethaneThermal conductivity0 ~ 100% Vol.
Oxygen (O2)Galvanic cell0 ~ 40% Vol.
Hydrogen Sulfide (H2S)Electrochemical cell0 ~ 100 ppm (optional 0-500 ppm)
Carbon Monoxide (CO)Electrochemical cell0 ~ 500 ppm
Gas Detection Specifications (Part 2)
Gas DetectedAccuracy Statement (whichever is greater)Preset Alarms (User Adjustable)
Combustible Gases (Methane as standard)± 5% of reading or ± 2% LEL(LEL mode only)1st alarm 10% LEL 2nd alarm 50% LEL Over alarm 100% LEL
% Volume Methane± 5% of reading or ± 2% of full scaleNo alarms for % Vol. CH4
Oxygen (O2)± 0.5% O2Low alarm 19.5% High alarm 23.5% Over alarm 40.0%
Hydrogen Sulfide (H2S)± 5% of reading or ± 2 ppm H2S1st 5 ppm 2nd 30 ppm TWA 10 ppm STEL 15 ppm Over 100 ppm
Carbon Monoxide (CO)± 5% of reading or ± 5 ppm CO1st 25 ppm 2nd 50 ppm TWA 25 ppm STEL 200 ppm Over 500 ppm
General Specifications
Sampling MethodInternal sample pump; flow rate nominal 0.5 LPM; includes hydrophobic filter
DisplayDigital LCD with 7 segments; auto backlight during alarm
Alarms TypesGas alarms: 1st and 2nd; STEL; TWA (user adjustable) and OVER
Trouble alarms: Sensor connection; low battery; low flow; circuit trouble and calibration error
Alarm MethodsGas 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 TimeWithin 30 seconds (T90)
Continuous OperationAlkaline battery: 15 hours Li-Ion battery: 10 hours 70°F (21°C)
Power SourceLi-Ion battery pack; or 3 “AA” Alkaline battery pack; interchangeable
Safety RatingATEX; TIIS; IECEx; CE; CSA classified (as standard); as intrinsically safe. Class I; Division 1; Groups A; B; C; D (optional version available)
Dimension & WeightApprox. 143 (H) x 71 (W) x 43 (D) mm (5.6” H x 2.8” W x 1.6” D); approx. 350 g (12.3 ounces)
Case MaterialHigh dust & water resistant design. RFI shielded high impact plastic with protective rubber overmolding
Configurations 1; 2; 3; 4; or 5 sensor units; Li-Ion or alkaline battery pack options
WarrantyTwo years material and workmanship
Standard Accessories• Belt clip
• Rubber nozzle; 3.5”
• Datalogging software
• 10” Probe
• Manual
• Quick reference card
• 10’ Hose
• Training CD
Optional Accessories• SDM-2012 calibration stations
• Calibration kit
• Li-Ion battery pack
• AC or DC Charger
• Sample draw hoses (10’ standard; up to 100’ max. available)
• Carrying case
More Information
OPT SKU RKI-72-0290-22-B
MPN 72-0290-22-B
Shipping Weight 1.00