Used MSA Altair 4 Gas Detector


Used MSA Altair 4 Gas Detector

from 400.00

Unit includes gas detector, new Oxygen sensor, charger, and calibration adapter.

Calibration kit includes 58L cylinder of calibration gas set to MSA Altair 4 default and 0.25lpm regulator.

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From Ideal

We really like the MSA Altair 4 gas monitor.  It's one of the best monitors we've seen in terms of construction and durability.  The oxygen sensor is an easy to find Alphasense O2 oxygen sensor, so they're easy to take care of.  IP67 is excellent for dust/water protection.  They're reliable, easy to use, and they hold up to abuse.  The models we sell used have been refurbished with new Oxygen sensors and we're giving them a 1 year warranty.  Unit will be calibrated with MSA standard calibration gas unless you notify us that you want it set up for different calibration gas.  Also included with the sale is a 6 month calibration check up, free of charge.  Just pay shipping and we'll calibrate it for free at the 6 month mark! 

From the Manufacturer:

MSA's new ALTAIR 4, Multigas Detector for LEL, CO, H2S, and O2 raises the standard for personal multigas detectors by offering a combination of features you won't find in competitive models.

The ALTAIR 4, Multigas Detector is the only portable gas detector with an optional MotionAlert™ feature if a user should become disabled due to unforeseen hazards. When enabled, the MotionAlert feature will activate an audible alarm if the instrument does not detect motion for 30 seconds, and is ideal for confined space entry applications. This unique gas detector function can be deactivated by the user. A high-contrast display and three large, rubberized buttons enable easy operation in low-light conditions.

The rubber over-molded housing is easy to grip, provides unsurpassed durability, is rated IP67 against dust and water ingress, and passes a 10+ foot drop test. This unit is equipped with a 95+ dB audible alarm and ultra-bright alarm LEDs on both its top and bottom for maximum visibility. Vibrating alarm and datalogging are standard features in this very competitively-priced unit.

MSA’s ALTAIR 4 Multigas Detector is Galaxy® System compatible for calibration and record keeping; a QuickCheck™ Test Station for fast, easy bump testing is also available. Data logging is a standard feature; the ALTAIR 4 Multigas Detector is MSA Link™ Software-ready.


  • MotionAlert™ feature plus audible, visual & vibrating alarms
  • InstantAlert™ feature to sound a manual alarm
  • Most rugged instrument available
  • Large buttons for easy operation
  • 16-hour battery run time when fully charged
  • Tested to IP67
  • Global approvals
  • Economically priced
  • MSA Link Software-read