MSA Altair 2X, Dual gas detector, option CO/H2S/SO2/NO2/NH3/Cl2





The first one or two gas detector that incorporates industry-leading Xcell Sensor technology to deliver unparalleled performance while drastically minimizing total cost of ownership, increasing durability and delivering enhanced worker safety, compliance and traceability. The ALTAIR® 2X is also the first portable gas detector to introduce revolutionary Xcell pulse technology. Based on proven science and advanced patented sensor capabilities, the ALTAIR® 2XP detector delivers the world’s first stand-alone bump test. This allows a daily bump test to be performed without the need for calibration accessories or specific calibration gas.

Available Models:

  • Altair 2XP – With XCell Pulse Technology: H2S-pulse
  • Altair 2XT Two-Tox Gas Detector: CO/H2S; CO-H2/H2S; CO/H2S-lc; CO/NO2; SO2/H2S-lc
  • Altair 2X Single Gas Detector: CO; CO-H2; CO-HC; H2S-LC; SO2; NO2; NH3; Cl2


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



All your MSA Gas Detection needs. We carry the entire line of MSA Gas detection equipment including the Altair 4X, Altair 4XR, Altair 5X, Sirius, Altair and Altair Pro Single Gas, replacement sensors and parts, calibration gas, and much more! MSA gas detection for single or multi gas detectors are available in compact, light weight models and are extremely reliable, robust and fully configurable and maintenance friendly. The personal gas detection of MSA can be used for every application and under the most severe conditions!


Technical Specification

Size 3.5″ l x 2.125″ W x 1.25″ d (no clip)
Weight 4 oz (113 g) w/ clip
Housing Rugged rubberized armor
Ingress Protection IP67
Drop Test 25 feet
Handling One-handed, one-button operation
Bump Test Indicators Pass: Green LED flash & checkmark
Fail or expiration: Red LEd flash only
Audible Alarm 95 db @ 1 foot
Visual Alarm Ultra-bright LEDs
Vibrating Alarm Standard
Display Large-character monochrome LCD
Backlight 10s backlight w/ adjustable timeout
Battery Replaceable lithium battery
Extended Temp. Range -20°C to +50°C
Extreme Range -40°C to +60°C
Data Log 2X/2XP: > 150 hrs
2XT: > 100 hrs
Event Log 75 events




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