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Category: Instruments

GX-2012 Confined Space Gas Monitor

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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 its Normal Operating mode;

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GX-2012 Confined Space Gas Monitor

GX-2012 Confined Space Gas Monitor

Multi Gas, Leak Check, Bar Hole Gas Detector

  • 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 its 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 RKIs 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-2012s 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) % VolumeMethane Oxygen (O2) Hydrogen Sulfide (H2S) Carbon Monoxide (CO)
Detection Principle Catalytic combustion Thermal conductivity Galvanic cell Electrochemical cell
Detection Range 0 ~ 100% LEL0 ~ 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% LEL2nd alarm 50% LELOver alarm 100% LEL No alarms for% Vol. CH4 Low alarm 19.5% High alarm 23.5% Over alarm 40.0% 1st 5 ppm2nd 30 ppmTWA 10 ppmSTEL 15 ppmOver 100 ppm 1st 25 ppm2nd 50 ppmTWA 25 ppmSTEL 200 ppmOver 500 ppm
Alarms Types Gas alarms: 1st and 2nd, STEL, TWA (user adjustable) and OVERTrouble alarms: Sensor connection, low battery, low flow, circuit trouble and calibration error
Alarm Methods Gas alarms: Flashing lights, two tone buzzer, and vibrationTrouble alarms: Flashing lights, trouble displayed, intermittent buzzer, and vibration
Operating Temp. & Humidity -20C to +50C (-4F to 122F)0 to 95% RH, non-condensing
Response Time Within 30 seconds (T90)
Continuous Operation Alkaline battery: 15 hours Li-Ion battery: 10 hours70F (21C)
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 unitsLi-Ion or alkaline battery pack options
Warranty Two years material and workmanship


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