Gas Monitors & Sensors

Identify Toxic Gas Leaks Fast

Easy-to-use single and multiple gas monitors and sensors at Airgas can keep you, the plant, and people who live nearby from becoming a victim of dangerous leaks and exposures. These invaluable life-saving devices come in a variety of convenient portable and clip-on formats from MSA, BW, Industrial Scientific, Honeywell, and other manufacturers. Not only can they help keep workers safe, but they can also keep the site in compliance.

Airgas is a leading single-source supplier for all things gases, welding equipment, and supplies, and safety products. Find it with us, anytime, anywhere at Airgas.com.

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RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Carbon Dioxide (10%) Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Carbon Dioxide (10%) Monitor

RKI Instruments, Inc. 04 SERIES Portable Chlorine Monitor

RKI Instruments, Inc. 04 SERIES Portable Chlorine Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Nitrogen Dioxide Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Nitrogen Dioxide Monitor

RKI Instruments, Inc. 04 SERIES Portable Nitrogen Dioxide Monitor

RKI Instruments, Inc. 04 SERIES Portable Nitrogen Dioxide Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Ammonia Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Ammonia Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Hydrogen Cyanide Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, Oxygen, and Hydrogen Cyanide Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, And Oxygen Monitor

RKI Instruments, Inc. GX-3R PRO Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, And Oxygen Monitor

RKI Instruments, Inc. 04 SERIES Portable Phosphine Monitor

RKI Instruments, Inc. 04 SERIES Portable Phosphine Monitor

MSA ALTAIR® 2X Carbon Monoxide (Hydrogen Resistent) And Hydrogen Sulfide Sensor

MSA ALTAIR® 2X Carbon Monoxide (Hydrogen Resistent) And Hydrogen Sulfide Sensor

BW Technologies by Honeywell GasAlertMicro5 Series Combustible Gas Sensor

BW Technologies by Honeywell GasAlertMicro5 Series Combustible Gas Sensor

RAE® Systems QRAE 3 Hydrogen Sulfide Sensor

RAE® Systems QRAE 3 Hydrogen Sulfide Sensor

BW Technologies by Honeywell PhD6™ Carbon Monoxide Sensor

BW Technologies by Honeywell PhD6™ Carbon Monoxide Sensor

BW Technologies by Honeywell PhD6™ Hydrogen Sulfide Sensor

BW Technologies by Honeywell PhD6™ Hydrogen Sulfide Sensor

RKI Instruments, Inc. 04 SERIES Portable Sulfur Dioxide Monitor

RKI Instruments, Inc. 04 SERIES Portable Sulfur Dioxide Monitor

RKI Instruments, Inc. GX-3R Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, And Oxygen Monitor

RKI Instruments, Inc. GX-3R Portable Combustible Gas, Carbon Monoxide, Hydrogen Sulfide, And Oxygen Monitor

MSA Oxygen Sensor

MSA Oxygen Sensor

RAE® Systems QRAE II QRAE 3 Carbon Monoxide Sensor

RAE® Systems QRAE II QRAE 3 Carbon Monoxide Sensor

Honeywell E3Point Carbon Monoxide Sensor

Honeywell E3Point Carbon Monoxide Sensor

Industrial Scientific GasBadge® Pro Nitrogen Dioxide Sensor

Industrial Scientific GasBadge® Pro Nitrogen Dioxide Sensor

Industrial Scientific GasBadge® Pro Hydrogen Cyanide Sensor

Industrial Scientific GasBadge® Pro Hydrogen Cyanide Sensor