Altair 4X

The ALTAIR 4X is a reliable multi-gas detector that measures O2, H2S, CO and combustible gas.


A rugged housing provides unsurpassed durability, including the ability to survive a 6 m drop test onto concrete. And with large, glove-friendly buttons and a high-contrast display, the ALTAIR 4X is easy to operate in any work environment, even low-light conditions. A full range of accessories is availabe.

The real strength of the ALTAIR 4X Multigas Detector comes from new sensor technology.

MSA XCell Sensors double the industry average, and are engineered using MSA?۪s proprietary application-specific integrated circuit (ASIC) design. The sensors?۪ controlling electronics is miniaturized and placed inside the sensor itself.

The XCell Sensors:
Superior stability, accuracy, repeatability and fast response characterize the new MSA XCell sensors. They are remarkably long-lasting and designed for an average life of more than four years. An end-of-sensor-life indicator gives advanced warning to user, eliminating service outages. Micro-electronics inside the sensor lead to faster response and calibration times.

Features & Benefits

MSA XCell Sensors

- Standard response and clear times
less than 15 seconds
- Outstanding signal stability and
repeatability under changing or
extreme environmental conditions
- Typical life greater than 4 years
- End-of-sensor-life indication
reducing instrument downtime and
reducing inventory

MotionAlert feature

Triggers an alarm if the user remains motionless for 20 seconds, indicating possible "man down"

InstantAlert feature

Allows users to manually activate all alarms to alert others to a potentially hazardous situation

Triple alarm system

Clear visual, audible and vibration alarm notification

Large LCD

Clear, easy and concise readings at a glance

24 hour bump-test checkmark

Confirms the detector recently passed a gas response check

Rugged rubberised housing

Withstands 6 m drop

IP 67 rated by a 3rd party

Resists water and dust ingress

Li-polymer battery

Optimum usage time (24 hrs) with minimum charging time means you can buy fewer instruments to cover long shifts

Glow-in-the-dark case (optional)

Allows high visibility, increasing the safety at confined spaces, mining and other dark environments

QuickCheck Test Station compatible

Allows automatic bump testing of unit with a simple PASS or FAIL indication, helping to reduce human error. All test records are stored and can be retrieved as needed using MSA Link Software

MSA Link Software-compatible

When connected to MSA Link Software, all stored records can be accessed. Print capability for calibration reports, alarm set point changes etc. is offered in multiple languages

Event log/data log

Records up to 500 events for a quick overview of calibration records and alarms. If more details are required, a full data log can be assessed

Ergonomic design with large rubberised buttons

Ensures easy operation, even with gloves

MSA XCell Sensors

- Lower cost of ownership due to
less gas required (faster calibration
and bump check times) and longer
sensor life
- 3-year standard warranty (up to 4 years, optional)

GALAXY System compatible

Allows for automatic testing, calibration, and recordkeeping for up to 10 units simultaneously, helping to reduce human error

Auto calibration

Saves time and calibration gas by calibrating all sensors simultaneously