MSA Altair 4XR Multigas Detector (O2, H2S, CO) – Charcoal | Portable Handheld Gas Monitor | UL/CSA Approved

Overview

The MSA Altair 4XR Multigas Detector is designed for professionals who need reliable, real‑time gas monitoring in challenging environments. This instrument‑only unit tracks multiple gases—O2, LEL, H2S, and CO—while minimizing cross‑channel interference to help teams stay aware of their atmospheric conditions without guesswork.

With a focus on practical safety moments, the Altair 4XR offers robust data handling and clear status cues that support daily workflows. The device balances detailed information with a straightforward interface, so operators can interpret readings at a glance during routine tasks or in high‑pressure moments.

What it detects and how it helps

• LEL (Lower Explosive Limit) for early detection of fuel‑gas concentrations, alongside oxygen, hydrogen sulfide, and carbon monoxide readings.
• Auto‑traceability features record critical events and gas levels, supporting ongoing safety reviews and shift handoffs.

Key benefits at a glance

• Long‑lasting data logging: 500+ alarm events and 50+ hours of stored data, plus bump and calibration records, help you track performance over time.
• Reliable uptime: 24‑hour run time on a rechargeable Li‑polymer battery keeps teams in the field longer between charges.
• Clear safety cues: Large, on‑screen indicators plus bump pass/fail visibility to support quick maintenance checks.

Safety, compliance, and reliability

• MotionAlert (move‑or‑stay monitored) and InstantAlert (manual alarm) features
• End‑of‑sensor‑life warnings to help with proactive planning
• Rugged construction with over‑molded armor, MIL‑STD‑810G drop protection, and IP68 rating for dust and water resistance

Durability and compatibility

• Designed to survive demanding environments with rugged hardware and a sealed chassis
• Plug‑and‑play slots support MSA XCell sensors; compatible with MSA GALAXY GX2 automated test system and MSA Link software for streamlined workflows

What you get

This is an instrument‑only unit, with the option to add compatible sensors and accessories separately. The Altair 4XR is built to support ongoing maintenance programs and field service without sacrificing accuracy or reliability.