GX-2012 Confined Space Gas Monitor by RKI Instruments

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  • Regular price $1,105.00
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Description: 72-0292-01-B - GX-2012, 1 sensor, LEL base, Alkaline and Li-ion battery packs with 100-240 VAC charger


  • 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)


    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. When equipped with an optional TC sensor, the GX-2012 can measure 100% volume methane and dynamically auto range from % LEL to % volume. This is ideal for line purge testing.

    Built around high-quality micro-sensor technology, the GX-2012 is RKI’s smallest personal 1-5 sensor gas monitor with a built in sample pump. Weighing only 12.3 ounces, the GX-2012 can monitor the standard confined space gases (LEL combustibles, Oxygen content, Carbon Monoxide, and Hydrogen Sulfide).

    The GX-2012’s large LCD display shows all gas readings, battery level, current time, and will automatically backlight in alarm conditions. Standard alarm types include vibration, visual, and audible alarms, which can be set to latching or non-latching. Controlled by a microprocessor, the GX-2012 continuously checks itself for sensor connections, low battery, circuit trouble, low flow, and calibration errors. The GX-2012 can interchangeably operate on either a Li-ion battery pack or an alkaline battery pack. The batteries are simple to replace requiring no tools to access the removable battery compartment or pack.


    Gas Detected Combustible Gases
    (Methane as standard)
    % Volume
    Oxygen (O2) Hydrogen Sulfide (H2S) Carbon Monoxide (CO)
    Detection Principle Catalytic combustion Thermal conductivity Galvanic cell Electrochemical cell
    Detection Range 0 ~ 100% LEL
    0 ~ 500 / 1,000 / 2,000 / 5,000 ppm
    0 ~ 100% Vol. 0 ~ 40% Vol. 0 ~ 100 ppm
    (optional 0-500 ppm)
    0 ~ 500 ppm
    Accuracy Statement
    (whichever is greater)
    ± 5% of reading or
    ± 2% LEL(LEL mode only)
    ± 5% of reading or ± 2% of full scale ± 0.5% O2 ± 5% of reading or ± 2 ppm H2S ± 5% of reading or ± 5 ppm CO
    Sampling Method Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
    Display Digital LCD with 7 segments, auto backlight during alarm
    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 5 ppm
    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
    Alarms 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
    70°F (21°C)
    Power Source Li-Ion battery pack, or 3 “AA” Alkaline battery pack; interchangeable
    Safety Rating ATEX, TIIS, IECEx, CE, CSA classified (as standard), as intrinsically safe. Class I, Division 1, Groups A, B, C, D (optional version available)
    Dimension & Weight Approx. 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 Material High dust & water resistant design. RFI shielded high impact plastic with protective rubber overmolding
    Controls Five buttons: POWER / ENTER, DISPLAY, AIR, RESET, SHIFT
    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
    Configurations 1, 2, 3, 4, or 5 sensor units
    Li-Ion or alkaline battery pack options
    Warranty Two years material and workmanship


    Availability: Manufacturer Sourced. Usually available/ships in 3-7 Days.