GX-3R Pro

GX-3R Pro Common Configuration


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
Detectable Gases
Gas Measuring Range (Increments) Accuracy Statement Preset Alarms
Sensor Slot 1: Carbon Monoxide (CO) & Hydrogen sulfide (H2S) *Interchangeable
H2S / CO Dual EC 0 ~ 2000 ppm (1 ppm) ± 5% of reading or ± 5 ppm CO A1: 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 H2S A1: 5 ppm│ A2: 30 ppm A3: 100 ppm│TWA: 1.0 ppm STEL: 5.0 ppm
H2S Only EC 0 ~ 200.0 ppm (0.1 ppm) ± 5% of reading or ± 2 ppm H2S A1: 5 ppm│ A2: 30 ppm A3: 100 ppm│TWA: 1.0 ppm STEL: 5.0 ppm
CO H2 Compensated EC 0 ~ 2,000 ppm ± 5% of reading or ± 2 ppm CO A1: 25 ppm│ A2: 50 ppm A3: 1200 ppm│TWA: 25 ppm STEL: 200 ppm
Sensor Slot 2: Combustibles (Methane as standard)
CH4 / HC Catalytic 0 ~ LEL (1% LEL) ± 5% of reading or ± 2 % LEL 1st: 10% LEL │ 2nd: 25% LEL 3rd: 50% LEL │ Over:100% LEL
Sensor Slot 3: Oxygen (O2)
O2 EC 0 ~ 40.0% Vol. (0.10%) ± 0.5% O2 Low 1: 19.5%│ Low 2: 18.0% High: 23.5%│ Over: 40.0%
Sensor Slot 4: Toxics & CO2 *Interchangeable
SO2 EC 0 ~ 100.0 ppm (0.05 ppm) ± 10% of reading or ± 5 % of full scale A1: 2 ppm│ A2: 5 ppm A3: 100 ppm│ TWA: 0.25 ppm STEL: 0.25ppm
CO2 % IR* 0 ~ 10.0% Vol. (0.01%) ± 5% of reading or ± 2 ppm A1: 0.50% Vol.│ A2: 3.00% Vol. A3: 4.00% Vol.│ TWA: 0.50% Vol. STEL: 3.00% Vol.
CO2 ppm 0 ~ 10,000 ppm (20 ppm) A1: 5,000 ppm│ A2: N/A TWA: N/A│STEL: N/A
Common Specifications
Sampling Method Diffusion sampling standard (hand aspirator or clip-on motorized pump optional)
Display Full dot LCD with Autobacklight and Autorotation
Alarm Types Gas Alarm Trouble 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 Alarm Gas Alarm Trouble 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 Time Within 30 seconds (T90)
Power Source Config Li-ion Alkaline
4-gas + EC 25 hours 16 hours
4-gas + IR 16 hours 7 hours
Dimension & Weight 2.9” 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 Material Explosion proof, dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft
Bluetooth Communication BLE: with iOS and Android phone app: RK Link
Datalogging Logs 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 / Approvals ATEX, CSA
Warranty Three years material and workmanship including sensors
*specifications subject to change

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