MSA Safety 10178570 ALTAIR 4XR Personal Gas Detector for Carbon Monoxide, H2S, Oxygen, LEL (Pentane) Detection Audible

This gas detector is a portable instrument designed to monitor flammable and toxic atmospheres in industrial settings. It continuously measures carbon monoxide, hydrogen sulphide, oxygen concentration and lower explosive limit using pentane as the LEL reference, providing audible and visual alerts for hazardous conditions. The unit operates from an internal lithium‑polymer battery and is suitable for use in environments requiring ATEX certification.

• Detects CO, H2S, O2 and LEL with simultaneous monitoring capability
• Audible alarm and visual alarm provide immediate hazard indication
• LCD display shows real‑time concentration readings clearly
• Lithium‑polymer battery offers up to 24 hours continuous operation
• Operates reliably from -40°C to 60°C for extreme environments
• Compact 0.23 kg weight supports easy personal carriage

• Suitable for confined space entry monitoring tasks
• Ideal for maintenance crews performing gas surveys
• Used for routine site safety checks in hazardous zones
• Can be used for industrial process area leak detection
• Suitable for personnel protection in remote locations

It runs from an internal lithium‑polymer cell and provides approximately 24 hours of continuous operation on a full charge.

It will alarm for carbon monoxide, hydrogen sulphide, oxygen deviations and LEL based on pentane calibration.

The instrument is rated to function across a wide span from -40°C up to 60°C.

The fitted LCD presents concentration values and status information for rapid assessment in varied lighting.

This product is sold with the manufacturer’s original calibration date. We cannot guarantee the calibration will still be valid at the time of purchase.