GX-3R

  • Sale!

    RKI GX-3R, 4 Gas, LEL / O2 / combo H2S & CO, 72-RA-C360 ° View

    $535.50
  • RKI GX-3R, 3 gas, LEL / O2 / H2S with 100-240 VAC charger, 72-RB-C360 ° View

    $595.00
  • RKI GX-3R, 3 gas, LEL / O2 / CO with 100-240 VAC charger, 72-RC-C360 ° View

    $595.00

GX-3R

The GX-3R is the world's smallest 4 gas monitor weighing only 3.52 ounces and can comfortably be clipped within a worker’s breathing zone (2.2” W x 2.55” H x 1.02” D). It simultaneously monitors and displays LEL combustibles, O2, CO (Hydrogen compensated CO also available), and H2S.

The GX-3R represents the latest evolution of gas detection technology utilizing a new generation of micro sensors. The LEL sensor has a unique design with two active filaments in one sensor to increase its resistance to silicone poisoning. If one filament gets poisoned the second filament takes over. The new O2 sensor is electrochemical with a 3 to 5 year life span. H2S and CO are now available in a combo micro sensor.
  • Smallest & lightest 4 gas monitor
    • 2.2″ W x 2.55″ H x 1.02″ D, 3.52 ounces
  • Simultaneous detection of 4 gases:
    • LEL, O2, H2S & CO H2
    • H2 Compensated CO sensor available
  • Simple 2-button operation
  • Non-Compliance Indicator
  • Alarms: audible, visual, & vibration
  • 3 user adjustable alarm levels
  • Impact resistant body with removable rubber boot
  • Large LCD Auto-backlit display
  • 25 hours of operation (Lithium-ion battery)
  • Field replaceable sensors & filters
  • Water and dust resistant design, IP66/68
  • Stealth mode for law enforcement
  • 3 Year warranty
  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Oil and Gas
  • Water/Wastewater
  • Fire Services
  • Construction
Gas Detected(CO) H2 CompensatedCarbon Monoxide(CO)-Dual SensorHydrogen Sulfide(H2S)-Dual SensorH2S OnlyCombustible Gases (Methane as standard)Oxygen
Sensor Slot111123
Detection PrincipleECDual ECDual ECECCatalytic combustionElectrochemical cell
Detection Range (Increments)0 ~ 2,000 ppm (1 ppm)0 ~ 200.0 ppm (0.1 ppm)0 ~ 100% LEL (1% LEL)0 ~ 40% Vol. (0.1%)
Accuracy Statement± 5% of reading or ± 2 ppm CO± 5% of reading or ± 5 ppm CO (whichever is greater)± 5% of reading or ± 2 ppm H2S (whichever is greater)± 5% of reading or ± 2% LEL (whichever is greater)± 5% of reading O2
Sampling MethodDiffusion sampling standard (hand aspirator or clip-on motorized pump optional)
DisplayDigital LCD displays with 7 segment plus 14 segment plus icon
Preset Alarms (User Adjustable) Overscale alarm (Non-adjustable)1st alarm: 25.0 ppm 1st alarm: 5.0 ppm1st alarm: 10% LELLow 1 alarm: 19.5%
2nd alarm: 50.0 ppm2nd alarm: 30.0 ppm2nd alarm: 25% LELLow 2 alarm: 18.0%
3rd alarm: 1200.0 ppm3rd alarm: 100.0 ppm3rd alarm: 50% LELHigh alarm: 23.5%
TWA alarm: 25.0 ppmTWA alarm: 1.0 ppm Over alarm: 100% LELOver alarm: 40.0%
STEL alarm: 200.0 ppmSTEL alarm: 5.0 ppm
Over alarm: 2000.0 ppmOver alarm: 200.0 ppm
Types of AlarmsGas Alarm: 3 Increasing alarms, STEL, TWA, overscale alarm. O2 decreasing/increasing.
Trouble alarm: Sensor disconnection, low battery, circuit error, calibration range error
Display of AlarmGas Alarm: Flashing LEDs, continuous buzzer (100 db @ 30 cm), flashing gas value, vibration
Trouble alarm: Flashing LEDs, intermittent buzzer (95 db @ 30 cm), display of error message
Operating Temp. & Humidity-20°C ~ +50°C [ -4°F ~ +122°F ], 10 to 90% RH, non-condensing (continuous environment)
-40°C ~ +60°C [ -40°F ~ +140°F ], 0 to 95% RH, non-condensing (temporary environment, 15 minutes)
Response TimeWithin 30 seconds (T90)
Power SourceLithium-ion battery, Approx. 25 hours after a 3 hour full charge
ApprovalsATEX, CSA
Dimension & Weight2.2” W x 2.55” H x 1.02” D (Approx. 58 W x 65 H x 26 D mm), 3.52 ounces (approx. 100 g) without rubber booth
2.4” W x 2.63” H x 1.06” D (Approx. 61 W x 67 H x 27 D mm), 3.70 ounces (approx. 105 g) with rubber booth
Case MaterialExplosion proof, dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft.
ControlsTwo buttons: POWER / MODE, AIR
DataloggingLogs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Interval Trends
Standard Accessories-Alligator clip
-protective rubber boot
-charger
-calibration adapter
Optional Accessories-SDM-3R calibration station
-RP-3R Clip-on sampling pump with 4” rubber nipple, 10’ hose and probe (up to 40’ hose available)
-Padded carrying case for GX-3R and accessories
-USB to IrDA downloading cable for datalogger
WarrantyThree years material and workmanship
Item TypePart NumberDescription
Maintenance07-6057Sensor gasket, GX-3R
Maintenance07-6058Sensor case o-ring, GX-3R
Repair10-1086Screw with flat & lock washers for GX-3R/GX-3R Pro belt clip, M2 x 4, SS, pan head, phillips
Repair10-1087Screw for GX-3R/GX-3R Pro sensor cap & battery pack, M2 x 10, SS, phillips, 1 each
Repair13-0112RKWrist strap
Repair13-0124Alligator clip with installation screws
Repair13-0125Belt clip with installation screws
Repair20-0332Rubber boot for GX-3R
Repair21-1950LCD protective film for GX-3R/GX-3R Pro
Repair21-1950-05LCD protection film for GX-3R, pack of 5
Repair21-1962Bottom cover (sensor cap), GX-3R
Repair21-1963Sensor retainer, GX-3R
Repair21-1967Rear case assembly with Li-ion battery, GX-3R
Repair21-1968Front case with overlay, GX-3R
Repair29-0715Label, case sensor, CO, LEL, O2, GX-3R
Maintenance33-0183Sensor dust filter with internal gasket for GX-3R
Maintenance33-0183-10Sensor dust filters with internal gasket for GX-3R, 10-pack
Repair33-0553Buzzer protection cover for GX-3R
Maintenance33-7130Scrubber disk filter for H2S/CO sensor 5-pack
Maintenance33-7131Scrubber disk filter for LEL sensor, 5-pack
Maintenance33-7132Scrubber disk filter, charcoal, for CO & H2 comp CO sensor, GX-3R/GX-3R Pro, 5-pack
Maintenance33-7133Humidity filter disk for H2S sensor, GX-3R/GX-3R Pro, 5-pack
Repair51-1142LCD module with cable, for GX-3R
Repair57-2098Li-Ion battery with battery board
MaintenanceESR-A13I-H2SSensor, Hydrogen Sulfide (H2S) 0-200 ppm for GX-3R/GX-3R Pro/GasWatch 3
MaintenanceESR-A13P-COSensor, Carbon Monoxide (CO) 0-2000 ppm for GX-3R/GX-3R Pro/GasWatch 3
MaintenanceESR-A1CP-CO-HSensor, Carbon Monoxide (CO) 0-2000 ppm with H2 compensation for GX-3R/GX-3R Pro/GasWatch 3/04 Series
MaintenanceESR-A1DP-COHSSensor, H2S/CO combination, CO 0-2000 ppm, H2S 0-200 ppm for GX-3R / GX-3R Pro / GasWatch 3 / 04 Series
MaintenanceESR-X13P-OXYSensor, Oxygen (O2) 0-25% vol for GX-3R/GX-3R Pro
MaintenanceNCR-6309Sensor, LEL for GX-3R/GX-3R Pro
  • Wrist strap

    Wrist strap, GX-2009/GX-2012

    $4.00
  • Placeholder

    Sensor gasket, GX-3R

    $3.60
  • Placeholder

    Sensor case o-ring, GX-3R

    $3.60
  • Placeholder

    Screw with flat & lock washers for GX-3R/GX-3R Pro belt clip, M2 x 4, SS, pan head, phillips

    $1.00
  • Placeholder

    Screw for GX-3R/GX-3R Pro sensor cap & battery pack, M2 x 10, SS, phillips, 1 each

    $1.00
  • Placeholder

    Alligator clip with installation screws

    $26.00
  • Placeholder

    Belt clip with installation screws

    $28.00
  • Placeholder

    Rubber boot for GX-3R

    $18.00
  • Placeholder

    LCD protective film for GX-3R/GX-3R Pro

    $6.00
  • Placeholder

    LCD protection film for GX-3R/GX-3R Pro, pack of 5

    $29.00
  • Placeholder

    Bottom cover (sensor cap), GX-3R

    $10.00
  • Placeholder

    Sensor retainer, GX-3R

    $3.60
  • Placeholder

    Rear case assembly with Li-ion battery, GX-3R

    $210.00
  • Placeholder

    Front case with overlay, GX-3R

    $48.00
  • Placeholder

    Label, case sensor, CO, LEL, O2, GX-3R

    $1.00
  • Placeholder

    Sensor dust filter with internal gasket for GX-3R

    $15.00
  • Placeholder

    Sensor dust filters with internal gasket for GX-3R, 10-pack

    $135.00
  • Placeholder

    Buzzer protection cover for GX-3R

    $6.00
  • Placeholder

    Scrubber disk filter for H2S/CO sensor 5-pack

    $26.00
  • Placeholder

    Scrubber disk filter for LEL sensor, 5-pack

    $26.00
  • Placeholder

    Scrubber disk filter, charcoal, for CO & H2 comp CO sensor, GX-3R/GX-3R Pro, 5-pack

    $26.00
  • Placeholder

    Humidity filter disk for H2S sensor, GX-3R/GX-3R Pro, 5-pack

    $35.00
  • Placeholder

    LCD module with cable, for GX-3R

    $52.00
  • Placeholder

    Li-Ion battery with battery board

    $160.00
  • Sensor, Hydrogen Sulfide (H2S) 0-200 ppm for GX-3R/GX-3R Pro/GasWatch 3

    $150.00
  • Sensor, Carbon Monoxide (CO) 0-2000 ppm for GX-3R/GX-3R Pro/GasWatch 3

    $150.00
  • Sensor, Carbon Monoxide (CO) 0-2000 ppm with H2 compensation for GX-3R/GX-3R Pro/GasWatch 3/04 Series

    $240.00
  • H2S/CO Sensor

    Sensor, H2S/CO combination, CO 0-2000 ppm, H2S 0-200 ppm for GX-3R / GX-3R Pro / GasWatch 3 / 04 Series

    $240.00
  • O2 Sensor

    Sensor, Oxygen (O2) 0-25% vol for GX-3R/GX-3R Pro

    $150.00
  • LEL Sensor

    Sensor, LEL for GX-3R/GX-3R Pro

    $150.00
  • AC Adapter for GX-3R, GX-3R Pro

    $90.00
  • Calibration Adapter

    $10.00
  • DC Adapter with Vehicle Plug & 4 ft Cable, 12-24 VDC for GX-3R/GX-3R Pro

    $50.00
  • Downloading Cable, USB/IrDA adapter

    $220.00
  • Multi-unit AC adapter, 100 – 240 VAC (5.99 VDC out) for charging 5 instruments, GX-3R / GX-3R Pro

    $265.00
  • Padded carrying case for one GX-3R, GX-3R Pro, GX-2009 or 03 series instrument and charger only

    $54.00
  • RP-3R Pump with 10 ft Hose, 10 in Probe, Tapered Red Nozzle for GX-3R

    $420.00
  • RP-3R Pump with Tapered Red Nozzle for GX-3R

    $360.00
  • Sensor, Hydrogen Sulfide (H2S) 0-200 ppm for GX-3R/GX-3R Pro/GasWatch 3

    $150.00
  • Sensor, Carbon Monoxide (CO) 0-2000 ppm for GX-3R/GX-3R Pro/GasWatch 3

    $150.00
  • Sensor, Carbon Monoxide (CO) 0-2000 ppm with H2 compensation for GX-3R/GX-3R Pro/GasWatch 3/04 Series

    $240.00
  • H2S/CO Sensor

    Sensor, H2S/CO combination, CO 0-2000 ppm, H2S 0-200 ppm for GX-3R / GX-3R Pro / GasWatch 3 / 04 Series

    $240.00
  • O2 Sensor

    Sensor, Oxygen (O2) 0-25% vol for GX-3R/GX-3R Pro

    $150.00
  • LEL Sensor

    Sensor, LEL for GX-3R/GX-3R Pro

    $150.00
  • O2 Sensor

    Sensor, O2 for GX-3R/GX-3R Pro

    $250.00
  • RKI GX-3R / GX-3R Pro 81-GX3RCO Calibration Kit, 103L cyl CO 50 ppm / CH4 50% LEL / O2 12% in N2

    $340.00
  • RKI GX-3R / GX-3R Pro 81-GX3RCO-LV Calibration Kit, 34L cyl CO 50 ppm / CH4 50% LEL / O2 12% in N2

    $265.00
  • RKI GX-3R / GX-3R Pro 81-GX3RHSCO Calibration Kit, 58AL cyl H2S 25 ppm / CO 50 ppm / CH4 50% LEL / O2 12% in N2

    $380.00
  • 81-GX3RHSCO-116, Calibration Kit, GX-3R / GX-3R Pro

    RKI GX-3R / GX-3R Pro 81-GX3RHSCO-116 Calibration Kit, 116AL cyl H2S 25 ppm / CO 50 ppm / CH4 50% LEL / O2 12% in N2

    $490.00
  • RKI GX-3R / GX-3R Pro 81-GX3RHSCO-LV Calibration Kit, 34AL cyl H2S 25 ppm / CO 50 ppm / CH4 50% LEL / O2 12% in N2

    $355.00
  • SDM-3R calibration station with 1 solenoid, AC adapter, flash drive, USB cable, and tubing

    SDM-3R calibration station with 1 solenoid

    $1,300.00
  • SDM-3R calibration station with 1 solenoid, demand flow regulator, AC adapter, flash drive, USB cable, and tubing

    SDM-3R calibration station with 1 solenoid, demand flow regulator

    $1,580.00
  • SDM-3R calibration station with 1 solenoid, demand flow regulator, 58AL cyl H2S/CO/CH4/O2, cylinder holder, AC adapter, flash drive, USB cable, and tubing

    SDM-3R calibration station with 1 solenoid, demand flow regulator, 58AL cyl H2S/CO/CH4/O2

    $1,835.00
  • SDM-3R calibration station with 1 solenoid, demand flow regulator, 34AL cyl H2S/CO/CH4/O2, cylinder holder, AC adapter, flash drive, USB cable, and tubing

    SDM-3R calibration station with 1 solenoid, demand flow regulator, 34AL cyl H2S/CO/CH4/O2

    $1,760.00
  • RKI SDM-3R calibration station with 1 solenoid, demand flow regulator, 116AL cyl H2S/CO/CH4/O2, cylinder holder, AC adapter, flash drive, USB cable, and tubing

    RKI SDM-3R calibration station with 1 solenoid, demand flow regulator, 116AL cyl H2S/CO/CH4/O2

    $1,895.00
  • Placeholder

    Cylinder holder for 58 liter aluminum cylinders

    $16.00
  • Placeholder

    Cylinder holder for 103 liter steel cylinders and 116 liter aluminum cylinders

    $16.00
  • Placeholder

    Cylinder holder for 17/34 liter steel cylinders, and for 34 liter aluminum cylinders

    $16.00

  • RKI GX-3R, 2 gas, LEL / O2 with 100-240 VAC charger, 72-RG-C360 ° View

    $545.00
  • RKI GX-3R, 2 gas, LEL / CO with 100-240 VAC charger, 72-RI-C360 ° View

    $570.00