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RKI Instruments
RKI GX-3R Pro Multi-Gas Detector
Gases detected
Oxygen (O₂): 0 to 40.0% volume
Combustible (LEL): 0 to 100% LEL
Carbon Monoxide (CO): 0 to 2000 ppm
Hydrogen Sulfide (H₂S): 0 to 200.0 ppm
Carbon Dioxide (CO₂): 0 to 10% volume / 0 to 10,000 ppm
Alarms (3 per channel)
Audible: 100 dB at 30 cm
Visual: 3 LEDs, flashing gas reading with auto backlight
Vibration: continuous and intermittent vibration
Operating conditions
Continuous: -4 to approx. 122°F (-20 to approx. 50°C); 10 to 90% RH, noncondensing
Temporary (15 minutes): -40 to approx. 140°F (-40 to approx. 60°C); 0 to 95% RH, noncondensing
IP rating: IP66/68
Battery: rechargeable Li-ion or two AA alkaline batteries
Battery life: up to 25 hours (Li-ion battery); up to 16 hours (AA alkaline batteries, during non-alarm conditions)
Battery charge time: 3 hours (Li-ion only)
Dimensions (W x H x D): 2.9" x 2.6" x 1.06" (without boot); 3" x 2.64" x 1.45" (with boot)
Weight: 4.58 oz (without boot); 5.5 oz (with boot)
Compliance: CSA Classified intrinsically Safe, Class I, Division 1, Groups A-D
SDM-3R Docking StationSDM-3R Docking Station for 5-Gas Configurations
RKI GX-3R Pro Multi-Gas Detectors
4-gas detectors with the capability of a fifth gas configuration
Bluetooth® communication lets you monitor gas detectors in real-time
3-year warranty covers both instrument and sensors
The GX-3R Pro is the smallest 5-channel gas detector available, fitting in the palm of your hand. At only 4.58 ounces, it’s great for clipping to your collar or lapel to detect dangerous gases in the ten inch radius around your nose and mouth, designated by OSHA as the breathing zone.
In addition to monitoring standard confined space gases, the GX-3R Pro has a fifth channel to monitor CO₂ or other gases. Two of the sensor channels accept interchangeable sensors, providing flexible configurations. Sensors are easily changed in the field. Built for rigorous conditions, the GX-3R Pro gas detector features an impact-resistant IP66/68-rated case with removable rubber boot that withstands drops over 23 feet.
The backlit LCD shows real-time gas concentrations along with intuitive health check, sensor status, bump reminder, battery life and other helpful icons. Each channel features three adjustable alarm setpoints that are customizable to each different gas. Use to trigger an "early warning" alarm or wherever you have unique concerns. The standard triple alarm system activates beeping, flashing and vibrating alarms in the event of low, high, TWA, STEL or O₂ conditions. Three LEDs flash every 30 seconds to alert you when bump testing or calibration are overdue, or when a gas alarm event has occurred. The lights continue to flash until noncompliance conditions have been resolved. For added safety, the unit also features panic and man-down alarms.
Powerful communication and datalogging options
Bluetooth capabilities let you send real-time GPS location, alarm information and gas detector readings to your Bluetooth-enabled smartphone (requires free RK Link app, available for iOS or Android). The app also allows you to adjust detector settings, view calibration/bump details, and set up text or email notifications for alarm events.
The GX-3R Pro detector logs user ID, station ID, calibration and bump test history, alarm events, and alarm interval trends. Use the IR communications port to transfer logged data to a Windows-based PC for analysis and reporting (requires Data Logger Management software; available free at rkiinstruments.com). To automate calibration and logging, use the optional SDM-3R docking station (sold separately). Choose from gas detectors powered by two AA alkaline batteries or a rechargeable Li-ion battery pack (included).
Includes: sensors, alligator clip, protective rubber boot, two AA batteries or Li-ion battery pack, and a calibration adapter. 3-year warranty (instrument and sensors).
Gases detected
Oxygen (O₂): 0 to 40.0% volume
Combustible (LEL): 0 to 100% LEL
Carbon Monoxide (CO): 0 to 2000 ppm
Hydrogen Sulfide (H₂S): 0 to 200.0 ppm
Carbon Dioxide (CO₂): 0 to 10% volume / 0 to 10,000 ppm
Alarms (3per channel)
Audible: 100 dB at 30 cm
Visual: 3 LEDs, flashing gas reading with auto backlight
Vibration: continuous and intermittent vibration
Operating conditions
Continuous: -4 to approx. 122°F (-20 to approx. 50°C); 10 to 90% RH, noncondensing
Temporary (15 minutes): -40 to approx. 140°F (-40 to approx. 60°C); 0 to 95% RH, noncondensing
IP rating: IP66/68
Battery: rechargeable Li-ion or two AA alkaline batteries
Battery life: up to 25 hours (Li-ion battery); up to 16 hours (AA alkaline batteries, during non-alarm conditions)
Battery charge time: 3 hours (Li-ion only)
Dimensions (W x H x D): 2.9" x 2.6" x 1.06" (without boot); 3" x 2.64" x 1.45" (with boot)
Weight: 4.58 oz (without boot); 5.5 oz (with boot)
Compliance: CSA Classified intrinsically Safe, Class I, Division 1, Groups A-D
Gas Detectors & Sensors
DESCRIPTION STOCK #
GAS DETECTORS WITH ALKALINE BATTERY
RKI GX-3R Pro 4-Gas Detector (O₂, LEL, H₂S, CO) 332581
GAS DETECTORS WITH RECHARGEABLE BATTERY
RKI GX-3R Pro 4-Gas Detector (O₂, LEL, H₂S, CO) 332582
RKI GX-3R Pro 5-Gas Detector (O₂, LEL, H₂S, CO, CO₂) 332583
REPLACEMENT SENSORS
O₂ Sensor 332593
LEL Sensor 332594
H₂S/CO Sensor 332595
CO₂ Sensor 332596
CALIBRATION SUPPLIES
Calibration Gas, 58 L 55815
Carbon Dioxide Calibration Gas, 58 L, 5000 ppm 332673
Standard Regulator, 0.25 LPM 71449
GENERAL ACCESSORIES
Vehicle Power Adapter, 12 VDC 332587
Multi-Unit AC Adapter for 5 Gas Detectors, 100-240 VAC 332588
Calibration Adapter 332591
Waterproof Hard-Shell Pelican Case 42700
Replacement Power Adapter 332586
Replacement Alkaline Batteries, AA, 1.5V, Pack of 24 301823
SDM-3R Docking Station
SDM-3R Docking Station
Automate calibration, bump testing and datalogging. When used as a standalone unit, this station stores 200 calibrations, 214 bump tests or 469 alarm checks for future upload to your PC via the included USB flash drive and free SDM Docking Station software (download from rkiinstruments.com).
When connected to your PC, the station lets you manage up to 10 gas detectors at once. Set up automatic calibration, bump testing, alarm checks, charging and data archiving—with unlimited data storage. Stations require a demand flow regulator (stock # 71679) and calibration gas cylinder (stock # 55815); up to 10 stations share one set of calibration equipment. Choose the 1-valve station for 4-gas configurations or 2-valve for 5-gas configurations.
Includes: AC adapter, 6-ft USB cable, USB flash drive, 5-ft Ethernet cable and 10-ft exhaust tubing.
DESCRIPTION STOCK #
SDM-3R Docking Station for 4-Gas Configurations, 1 Valve 332589
SDM-3R Docking Station for 5-Gas Configurations, 2 Valve 332590
Standard Demand Flow Regulator for SDM-3R Docking Station 71679
Stainless Steel Demand Flow Regulator for Reactive Gases and Chlorine 330254
Optional RP-3R Sampling Pump & Hose
Attach this pump to your GX-3R Pro gas detector for up to 16 hours of continuous operation. Includes: 10-ft hose and nozzle. Other hose lengths sold separately.
DESCRIPTION STOCK #
Optional RP-3R Sampling Pump for GX-3R Pro 332598
Replacement Polyurethane Hose, 10'L 332600
Polyurethane Hose, 20'L 332601
Polyurethane Hose, 30'L 332602
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