To receive the most up-to-date product availability, pricing and delivery options, enter your zip code or log in to your account
Zip Code should not be blankEmail and Password should not be blank
Enter Delivery Zip Code
or
Log In
TELL US MORE
Are you currently located in California?
8 characters minimum
One number
One lowercase letter
One uppercase letter
One special character (!@#$%&*)
Password cannot contain space
Pursuant to CA SB 478, if you are located in California, Airgas cannot display your product pricing until all items have been added to your shopping cart so that we can calculate all applicable fees, including, but not limited to, shipping and handling fees.
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.
Features
Smallest and lightest 4 gas monitor
Simultaneous detection of 4 gases: LEL, O2, H2S and CO
H2 Compensated CO sensor available
Simple 2-button operation
Alarms: audible, visual, and vibration
3 user adjustable alarm levels
25 hours of operation (Lithium-ion battery)
Water and dust resistant design, IP66/68
3 Year warranty
Includes
Wrist strap
Rubber boot
Calibration adapter
Applications
Confined spaces
Refineries/petrochemical
Utilities Oil and Gas
Water/wastewater
Fire services
Construction
Product Attributes
Product Type
» Multi Gas Detector
Gas To Be Measured
» % LEL
» Combustible Gas
» CO
» Carbon Monoxide
» H2S
» Hydrogen Sulfide
» O2
» Oxygen