MSA ALTAIR 4XR Calibration & Bump Gas (58L)

This 58L MSA 4-gas calibration cylinder is the essential safety standard for Altair 4X and 4XR detectors. Featuring a precise 1.45% CH4, 60ppm CO, 20ppm H2S, and 15% O2 mixture, it ensures accurate daily bump testing and 6-monthly calibration for UK confined space entry.

Precise 4-Gas Blend: Features 1.45% CH4, 60ppm CO, 20ppm H2S, and 15% O2 for accurate MSA sensor verification.
High-Capacity 58L Cylinder: Provides a cost-effective solution for multiple daily bump tests and scheduled 6-monthly calibrations.
Full MSA Compatibility: Specifically engineered for use with MSA Altair 4X, 4XR, and GALAXY GX2 automated test systems.

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FAQs

Can this gas be used for both bump testing and calibration?

Yes, this specific 4-gas mixture is designed to perform both daily functional bump tests and full 6-monthly calibrations.

What is the shelf life of this 58L gas cylinder?

Most 4-gas mixtures have a shelf life of 12 to 24 months; always check the expiry date printed on the bottle.

Is this gas compatible with the MSA Altair 4XR?

Yes, it is the standard gas mixture used to verify and calibrate the XCell sensors in the Altair 4X and 4XR models.

How many bump tests can I get from a 58L cylinder?

Depending on the flow rate and test duration, a 58L cylinder typically provides approximately 80 to 100 manual bump tests.

Why is the Oxygen level set at 15%?

The 15% O2 concentration is used to trigger the “Low Oxygen” alarm on the detector, confirming the sensor reacts correctly to depleted air.

Does this cylinder require a specific regulator?

Yes, you will need a fixed-flow regulator (usually 0.25 or 0.5 LPM) with a C10 connection to use this cylinder.

What is the difference between CH4 and Pentane-simulant gas?

This cylinder uses a Methane (CH4) balance, which is the standard requirement for MSA detectors configured for Methane-based LEL readings.

Can I use this gas for other brands of gas detectors?

While the mixture may be similar, you should always check the manufacturer’s specifications to ensure the concentrations match your specific device.

How do I know when the gas cylinder is empty?

The pressure gauge on your regulator will show the remaining pressure; once it reaches zero, the cylinder must be replaced.

Does PQS Survey Ltd provide the regulators for these cylinders?

Yes, we supply a range of compatible MSA regulators and docking stations. Note that they are not provided as standard and must be added to your order.