GX-3R Pro


GX-3R Pro

The GX-3R Pro is the world’s smallest 5-gas monitor weighing only 4.58 ounces and fits in the palm of your hand (2.9” W x 2.6” H x 1.06” D). It simultaneously monitors and displays 5 different gases. In addition to monitoring standard confined space gases, LEL, O2, CO, & H2S, the GX-3R Pro has a 5th channel where you can add infrared or toxic sensors. Two of the four sensor slots have interchangeable sensors providing flexible configurations, which can easily be changed in the field.
  • Smallest & lightest 5 gas monitor
    • 2.9″ W x 2.6″ H x 1.06″ D , 4.58 ounces
  • Simultaneous detection of 5 gases
    • LEL, O2, H2S, CO, and other optional sensors
    • H2 Compensated CO sensor available
  • Simple 2-button operation
  • Bluetooth communication with iOS & Android App
  • Non-Compliance Indicator
  • 3 user adjustable alarm levels
  • Panic Alarm
    • Tap instrument twice
  • Man Down Alarm
  • Impact resistant body
  • Large full dot, auto-backlit display with auto-rotation
  • Stealth mode for law enforcement
  • Field replaceable sensors & filters
  • Water and dust resistant design, IP66/68
  • 3 Year Warranty
 
  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Oil and Gas
  • Water/Wastewater
  • Fire Services
  • Law Enforcement
  • Construction
Common Specifications
Sampling MethodDiffusion sampling standard (hand aspirator or clip-on motorized pump optional)
DisplayFull dot LCD with Autobacklight and Autorotation
Alarm TypesGas AlarmTrouble Alarm
• 2 increasing alarms
• STEL
• TWA
• Overscale alarm
• O2 decreasing/ increasing
• Sensor disconnection
• Low battery
• Circuit error
• Calibration range error
• Cal or bump due alarm
• Man Down Alarm
• Panic Alarm
Display of AlarmGas AlarmTrouble Alarm
• Flashing LED’s
• Continuous buzzer (100 db @ 30cm)
• Flashing gas value
• Vibration
• Flashing LED’s
• Intermittent buzzer (95 db @ 30cm)
• 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)
Response TimeWithin 30 seconds (T90)
Power SourceConfigLi-ionAlkaline
4-gas + EC25 hours16 hours
4-gas + IR16 hours7 hours
Dimension & Weight2.9” W x 2.6” H x 1.06” D (Approx. 73 W x 65 H x 26 D mm), 4.58oz (with rubber boot)
Case MaterialExplosion proof, dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft
Bluetooth CommunicationBLE: with iOS and Android phone app: RK Link
DataloggingLogs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Trends
Standard Accessories-Alligator clip
-Protective rubber boot,
-Charger
-Calibration adapter
Optional Accessories• Padded carrying case
• RP-3R Attachable sampling Pump with 4” rubber nipple, 10’ hose and probe (up to 40’ hose available)
• USB to IrDA downloading cable for datalogger
• SDM-3R calibration station
• Hand aspirator
Safety Design / ApprovalsATEX, CSA
WarrantyThree years material and workmanship including sensors
Detectable Gases
GasMeasuring Range (Increments)Accuracy StatementPreset Alarms
Sensor Slot 1: Carbon Monoxide (CO) & Hydrogen sulfide (H2S) *Interchangeable
H2S / CODual EC0 ~ 2000 ppm (1 ppm)± 5% of reading or ± 5 ppm COA1: 25 ppm│ A2: 50 ppm A3:1200 ppm│TWA: 25 ppm STEL: 200 ppm
0 ~ 200.0 ppm (0.1 ppm)± 5% of reading or ± 2 ppm H2SA1: 5 ppm│ A2: 30 ppm A3: 100 ppm│TWA: 1.0 ppm STEL: 5.0 ppm
H2S OnlyEC0 ~ 200.0 ppm (0.1 ppm)± 5% of reading or ± 2 ppm H2SA1: 5 ppm│ A2: 30 ppm A3: 100 ppm│TWA: 1.0 ppm STEL: 5.0 ppm
CO H2 CompensatedEC0 ~ 2,000 ppm± 5% of reading or ± 2 ppm COA1: 25 ppm│ A2: 50 ppm A3: 1200 ppm│TWA: 25 ppm STEL: 200 ppm
Sensor Slot 2: Combustibles (Methane as standard)
CH4 / HCCatalytic0 ~ LEL (1% LEL)± 5% of reading or ± 2 % LEL1st: 10% LEL │ 2nd: 25% LEL 3rd: 50% LEL │ Over: 100% LEL
Sensor Slot 3: Oxygen (O2)
O2EC0 ~ 40.0% Vol. (0.10%)± 0.5% O2Low 1: 19.5%│ Low 2: 18.0% High: 23.5%│ Over: 40.0%
Sensor Slot 4: Toxics & CO2 *Interchangeable
SO2EC0 ~ 100.0 ppm (0.05 ppm)± 10% of reading or ± 5 % of full scaleA1: 2 ppm│ A2: 5 ppm A3: 100 ppm│ TWA: 0.25 ppm STEL: 0.25 ppm
CO2 %IR*0 ~ 10.0% Vol. (0.01%)± 5% of reading or ± 2 ppmA1: 0.50% Vol.│ A2: 3.00% Vol. A3: 4.00% Vol.│ TWA: 0.50% Vol. STEL: 3.00% Vol.
CO2 ppm0 ~ 10,000 ppm (20 ppm)A1: 5,000 ppm│ A2: N/A TWA: N/A│STEL: N/A
Item TypePart NumberDescription
Maintenance07-6054Sensor gasket, GX-3R Pro
Maintenance07-6055Sensor case o-ring, GX-3R Pro
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
Repair20-0335Rubber boot for GX-3R Pro
Repair21-1950LCD protective film for GX-3R/GX-3R Pro
Repair21-1950-05LCD protection film for GX-3R/GX-3R Pro, pack of 5
Repair21-1960Bottom cover (sensor cap), GX-3R Pro
Repair21-1961Sensor retainer, GX-3R Pro
Repair29-0700Sensor case label for GX-3R Pro, CO / H2S / LEL / O2 / Toxic
Maintenance33-0184-10Sensor dust filters with internal gasket for GX-3R Pro, 10-pack
Repair33-0554Buzzer protection cover for GX-3R Pro
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
Maintenance33-7134H2S scrubber disk for SO2 sensor, GX-3R Pro, 5-pack
Repair49-1625Li-Ion battery pack for GX-3R Pro
Repair49-1626Alkaline battery pack for GX-3R Pro
MaintenanceESR-A13D-SO2Sensor, Sulfur Dioxide (SO2) 0-100 ppm for GX-3R Pro/SC-04
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
MaintenanceIRR-0409Sensor, CO2, 0-10% volume for GX-3R Pro
MaintenanceIRR-0433Sensor, CO2, 0-10,000 PPM for GX-3R Pro