Altair 2x

Altair 2X General Info

Low cost of ownership:

  • Fastest sensor response times, lowest calibration gas flow rate on the market
  • 4-year expected sensor life
  • 3-year warranty on instrument & most sensors (2 years on Cl2, NH3)
  • Stand-alone bump tests reduce maintenance, increase productivity (ALTAIR 2XP only)
  • 1 device can monitor 2 gases (ALTAIR 2XT only)

Increased safety awareness & real-time compliance:

  • Stand-alone bump test anytime, anywhere without specific calibration gas (ALTAIR 2XP only)
  • Bump pass: green LED flash every 15s, large on-screen checkmark
  • Bump fail or expiration: red LED flash every 15s, no checkmark
  • End-of-sensor-life warning and alarm
  • Sensor Range: 0-1999 ppm

Full-time traceability:

  • Records 75 alarm events
  • 150+ hours of periodic data (ALTAIR 2X and 2XP)
  • 100+ hours of periodic data (ALTAIR 2XT)
  • Compatible with MSA GALAXY® GX2 Automated Test System and MSA Link Pro software

Rugged durability:

  • Tough over-molded rubber armor
  • Survives multiple 25-ft drops onto concrete
  • Agency-certified dust- and water-tight IP67 construction
  • Intrinsically-safe design


  • ALTAIR 2XP Gas Detector with XCell Pulse Technology: H2S
  • ALTAIR 2X Gas Detectors: CO, CO-HC (High Concentration), CO-H2 (Hydrogen Resistant), H2S-LC, SO2, NO2, NH3 and Cl2
  • ALTAIR 2XT Two-Tox Gas Detector: CO/H2S, CO-H2/H2S, CO/H2S-LC, CO/NO2 and SO2/H2S-LC
  • Available in charcoal gray and glow-in-the-dark housing
  • Contact MSA for alternate or custom set points

Altair 2X Calibration Guide

Calibrate Altair 2X

  1. Turn on the device by holding down the button on the monitor till the hour glass on the display disappears, other wise it will just shut off.
  2. Once the device is on hold the button for a few seconds till you see Test Gas?
  3. Once you see Test Gas? Hold the button once again for 2-3 seconds.
  4. This will bring up the Test Cal? screen. Press the button to confirm.
  5. FAS? will now appear on the screen. Press the button to confirm. This will zero the device and set the reading to fresh air.
  6. Once done Cal? will appear. Press button to confirm you are ready to calibrate.
  7. Apply the correct gas to the device using the tube.
  8. The device will beep and let you know if the calibration has passed or failed.

Altair 2X compatible parts