Atex Gas Detectors

The MSA range of gas detectors includes 3 models of Portable Gas Detectors for 1, 4 or 5 gas types including LEL, oxygen, carbon monoxide, hydrogen sulfide and sulfur dioxide. The MSA range also include Static Atex Gas Detectors, Atex Gas Sensors, and Atex Gas Monitors.

msa gas detectors

ALTAIR® 4XR Multigas Detector

Outfitted with rapid-response MSA XCell® sensors, the ALTAIR 4XR Gas Detector is the toughest 4-gas monitor on the market and is backed by a 4-year warranty.
Methane 0-100% LEL, O2, H2S-LC, CO
Available in charcoal gray and glow-in-the-dark housing

ALTAIR® 2X Gas Detector

  • ALTAIR 2XP Gas Detector with XCell Pulse Technology: H2S
  • ALTAIR 2X Gas Detectors: CO, H2S-LC and SO2
  • ALTAIR 2XT Two-Tox Gas Detector: CO/H2S and SO2/H2S-LC
  • Available in charcoal gray and glow-in-the-dark housing.


MSA Galaxy GX2 allows automated calibration of MSA ALTAIR Gas Detectors. Simple, intelligent testing and calibration of MSA ALTAIR® and ALTAIR PRO Single-Gas Detectors and ALTAIR 4X and ALTAIR 5X Multigas Detectors.

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