MSA ALTAIR 4XR

The ALTAIR 4XR is a rugged, 4-gas monitor detecting O2, LEL, CO, and H2S. Featuring ultra-fast XCell sensors and Bluetooth connectivity, it is out-fitted for extreme environments. Its IP68 rating and drop-tested housing ensure reliable protection and rapid alarm response times on any UK site.

Ultra-Fast Detection: Equipped with XCell sensors that respond to gas hazards up to two times faster than the industry average.
Extreme Durability: Rugged IP68-rated housing survives 25 drops from 1.2m and an incidental 25ft (7.5m) drop onto concrete.
Enhanced Safety Alarms: Features MotionAlert (man-down alarm) and InstantAlert (manual distress signal) to notify team members of emergencies.
Clear Compliance Indicators: On-screen checkmark and a high-visibility green/red “Bump LED” provide instant confirmation of successful bump testing.
Extended Life & Warranty: Backed by a comprehensive 4-year warranty on both the instrument and the sensors for long-term reliability.

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1 x MSA ALTAIR 4XR Multigas Detector (LEL, O2, CO, H2S) 1 x Charging Cradle with Power Supply 1 x Calibration Cap and Tubing 1 x Pre-installed Stainless Steel Belt Clip 1 x Quick Start Guide and Instruction Manual

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Full Description

The MSA ALTAIR 4XR is built for demanding construction and infrastructure environments, providing reliable four-gas monitoring during groundworks, drainage operations, and civil engineering works. It simultaneously detects oxygen (O₂), carbon monoxide (CO), hydrogen sulphide (H₂S), and combustible gases (LEL), helping operatives identify risks before and during work. Ideal for use in trenches, manholes, chambers, service ducts, and confined spaces, the ALTAIR 4XR offers clear audible, visual, and vibration alarms to warn of unsafe conditions. Its rugged design is suited to harsh site environments, while the clear display ensures gas readings remain easy to interpret, even in poor lighting or challenging conditions. Reliable and straightforward to use, the MSA ALTAIR 4XR supports safe working practices across day-to-day construction and civil engineering activities.

FAQs

What gases does the ALTAIR 4XR typically detect?

The standard configuration for UK construction and confined space entry is a 4-gas setup: LEL (Combustible), Oxygen (O₂), Carbon Monoxide (CO), and Hydrogen Sulphide (H₂S). Other toxic sensor combinations, such as NO₂ or SO₂, are available depending on specific site requirements.

How does the ALTAIR 4XR compare to its predecessor, the ALTAIR 4X?

The 4XR is a major upgrade, moving from an IP67 to a superior IP68 rating and increasing drop-test certification to 7.5 metres. It includes a full 4-year warranty on the instrument and sensors, plus a “compliance checkmark” and Bump LED to show readiness at a glance.

What specific UK safety regulations mandate the use of a 4-gas monitor on-site?

The use of monitors is driven by COSHH Regulations 2002 and the Confined Spaces Regulations 1997, which require atmospheric testing and continuous monitoring for risks like fire or asphyxiation. The 4XR helps meet HSE EH40/2005 standards for Workplace Exposure Limits (WELs).

What is the “MotionAlert” feature?

MotionAlert is a built-in “man-down” alarm. If the unit detects the user has been immobile for 30 seconds, it triggers a pre-alarm; if not cancelled, it sounds a full distress alarm to alert colleagues that the worker may be unconscious or trapped.

What is “InstantAlert” and when should it be used?

InstantAlert is a manual panic button that allows a worker to trigger a high-decibel alarm and flashing LEDs in an emergency. It can be used even if gas levels are safe to signal for help during events like physical injuries or falls.

How often does the ALTAIR 4XR need to be bump tested?

Best practice requires a daily bump test before use to ensure sensors and alarms function correctly. Thanks to XCell technology, this test on the 4XR takes less than 15 seconds and uses significantly less gas than standard monitors.

What is the battery life and charging time?

The rechargeable Li-polymer battery provides a 24-hour run-time at room temperature. A full charge from empty takes less than 4 hours, ensuring the unit can be quickly turned around for use between different work shifts.

Is the ALTAIR 4XR truly waterproof?

Yes, with an IP68 rating, the 4XR is dust-tight and waterproof, certified to survive submersion in 2 metres of water for up to 1 hour. This makes it ideal for wet and muddy conditions in UK civil engineering and utility works.

How do I know if the instrument is in compliance?

The 4XR features a green flashing Bump LED and a checkmark icon on the display to show it has passed a bump test within the last 24 hours. If the LED is red or the checkmark is missing, the unit requires testing before use.

Why hire your gas detection from PQS Survey Ltd?

PQS Survey Ltd provides ALTAIR 4XR units that are fully serviced, calibrated, and ready for use. Hiring ensures you have a certified unit on-site with a fresh calibration certificate for H&S records without the need to manage sensors or calibration gas yourself.