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.
  • 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 DetectedCombustible Gases (Methane as standard)% Volume MethaneOxygen (O2)Hydrogen Sulfide (H2S)Carbon Monoxide (CO)
Detection PrincipleCatalytic combustionThermal conductivity Galvanic cellElectrochemical cell
Detection Range0 ~ 100% LEL 0 ~ 500 / 1,000 / 2,000 / 5,000 ppm0 ~ 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 MethodInternal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
DisplayDigital LCD with 7 segments, auto backlight during alarm
Preset Alarms (User Adjustable)1st alarm 10% LEL 2nd alarm 50% LEL Over alarm 100% LELNo alarms for % Vol. CH4Low 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 ppm1st 25 ppm 2nd 50 ppm TWA 25 ppm STEL 200 ppm Over 500 ppm
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
Standard AccessoriesBelt clip
Rubber nozzle, 3.5”
Datalogging software
10” Probe
Quick reference card
10’ Hose
Training CD
Optional AccessoriesSDM-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
Configurations1, 2, 3, 4, or 5 sensor units Li-Ion or alkaline battery pack options
WarrantyTwo years material and workmanship
Part NumberDescription
117-1001RKTapered rubber inlet nozzle, 4”, RP-6 / GX-2003 / GX-2012 / Gas Tracer
221-1833RKFilter holder, clear plastic
333-1031RKCotton balls, filters for probe, bag of 25
433-0159RKTeflon filter disc, 10 pieces, RP-2009/RP-6/GX-2003/GX-2012/Gas Tracer/GX-6000
533-1112RKWire mesh disk filter, RP-6 / GX-2003 / GX-2012, 10 pack
621-1890RKTop cover assembly, GX-2012 / Gas Tracer
730-0022RKPump replacement for GX-2012 and RP-2009, with cable and connector
821-1889RKMain case assembly, GX-2012
907-6024RKBattery pack gasket, GX-2012 / Gas Tracer
1007-6025RKMain case gasket, GX-2012 / Gas Tracer
1151-1125RKLCD display, GX-2012 / Gas Tracer
1257-2043RKCPU PC board assembly, GX-2012
1349-1406RKBattery, lithium, CR 1220, for main PCB, GX-2012 / Gas Tracer
1430-1053RKVibration motor, GX-2003 / GX-2012 / Gas Tracer
1510-1090RKTap tight screw M2x4.5 mm, phillips self-tapping
1657-2041RKSensor PC board assembly, GX-2012
1707-6026RKSensor gasket, GX-2012 / Gas Tracer
1833-7114RKFilter disk, H2S scrubber, strip of 5, for LEL sensor port, GP-01/GX-2001/GX-2009/GX-2012/Gas Tracer/GX-6000
1933-7102RKFilter, charcoal, for CO sensor, pack of 5, GX-2009/GX-2012/Gas Tracer/GX-6000
2021-1892RKSensor cap assembly, GX-2012
2113-0118RKBelt clip, GX-2012 / Gas Tracer
2249-1615RKBattery pack, lithium ion, GX-2012 / Gas Tracer
2349-1616RK-01Alkaline Battery pack cover with gasket, GX-2012 / Gas Tracer
2449-1616RK-02Alkaline Battery pack without cover with gasket, GX-2012 / Gas Tracer
2513-0112RKWrist strap
2610-1108RKScrew M2 x 16
2710-1093RKScrew M2 x 6 SUS304
2810-1091RKScrew M2 x 5 SUS
2910-1092RKTruss screw M2 x 5
30OS-BM2Sensor, Oxygen (O2) for GX-2009/GX-2012/GX-6000/GasWatch 2/OX-03/Gas Tracer
30OS-BM2Sensor, Oxygen (O2) for GX-2009/GX-2012/GX-6000/GasWatch 2/OX-03/Gas Tracer (pack of 5)
31NC-6264ASensor, LEL, for GX-2009/GX-2012/GX-6000/GP-03/Gas Tracer
31NC-6264B (CSA version)LEL sensor for GX-2012 CSA
32ES-1821Sensor, Carbon Monoxide (CO) for GX-2009/GX-2012/GX-6000/CO-03/GasWatch 2/Gas Tracer
33ES-1827ISensor, Hydrogen Sulfide (H2S) for GX-2009/GX-2012/GX-6000/HS-03/GasWatch 2
34TE-7561Sensor, TC, % volume, GX-2003/GX-2012/Gas Tracer
35SH-8641PPM sensor SH-8641, Gas Tracer
3649-1616RKAlkaline Battery pack without batteries with gasket, GX-2012 / Gas Tracer