
MSA Altair 4X Portable Gas Detector | 4-Gas Measurement | 4-Year Sensor Life
The ALTAIR 4X is an extremely durable multi-gas detector utilizing XCell® sensor technology to simultaneously measure combustible gases, O2, CO, H2S, SO2, and NO2. Engineered to surpass industry standards, this unit provides a 24-hour runtime and a 4-year sensor life, which is significantly longer than the industry average. Its digital sensor output minimizes RF interference, ensuring reliable performance in demanding environments such as welding and fire fighting.
How does the MSA Altair 4X ensure worker safety in confined spaces?
This detector features integrated MotionAlert to signal others if a user becomes immobile and InstantAlert for manual emergency signaling. It monitors four gases simultaneously using digital sensor outputs that are highly resistant to RF interference in industrial environments.
What are the primary durability specifications for this gas detector?
The unit is designed for extreme environments, capable of withstanding a 20 ft (6m) drop onto concrete without compromising internal electronics. It also features a 24-hour run time and a sensor life expectancy that exceeds the industry average by 60%.
Which certifications and standards does the Altair 4X meet?
This portable detector is certified under FTZU07ATEX0169X and FTZU08E0034 for explosive atmospheres. It also carries Marine (DGUV) 213.148 approval and a CE Declaration of Conformity for professional use.
| Measured Gases | Combustible, O2, CO, H2S, SO2, NO2 |
| Sensor Life | 4 Years |
| Battery Run Time | 24 Hours |
| Drop Resistance | 20 ft (6m) |
| Calibration Requirement | <50% of industry average gas usage |
| Safety Features | MotionAlert and InstantAlert |
| Approvals | ATEX, CE, Marine (DGUV) |
Compatible Accessories
- For respiratory protection in hazardous environments, combine with the Msa AirGo Compact SCBA.
- Also available for outright purchase as an MSA Altair 4X Portable Gas Detector - Ex Display.


