MSA Gas Detectors

We supply singel gas detectors and multigas detectors for analysis of up to six gases simultanously. Depending on configuration, the detectors will alert the worker of surrounding poisonous gases, explosive gases or the lack of oxygen. The products is well suited for wide range of industries including fire departments, police and defence.



Single gas

Designed for superior lifespan—patented sensors operate for over two years—and high performance, the ALTAIR Single-Gas Detector is the smart choice for market-leading, cost-effective gas monitors. Features sensor options for carbon monoxide, hydrogen sulfide, and oxygen coupled with LED/audible/vibrating alarms. Superior dust/water protection, high RFI resistance, and one-button operation provide heightened safety, plus increased durability and ease-of-use.


Single gas
  • Incorporate proven XCell® sensor technology
  • Enhance worker safety, compliance and traceability
  • Minimize cost of ownership
  • Demonstrate rugged durability

Features the first stand-alone bump test, which eliminates the need for bottled gas!


    Multi gas

    The ALTAIR 4X is an extremely durable Multigas Detector that simultaneously measures up to four gases from a wide range of XCell(R) sensor options including combustible gases, O₂, CO, H₂S, SO₂ and NO₂.

    • Two-tox CO/H2S sensor removes practically all cross-channel interference
    • Large buttons and high-contrast screen make operation easy in low-light conditions
    • Ribbed rubber housing provides secure grip and high durability
    • Unit features 95+ db alarm and ultra-bright LEDs
    • Exclusive end-of-sensor warning cautions user when unit’s sensor needs to be changed
    • MotionAlert option tells others that user has become immobile
    • InstantAlert provides manual alarm to alert others of a dangerous situation



    The ALTAIR 5X Gas Detector is capable of measuring up to 6 gases simultaneously and is now available with integrated PID sensor for VOC detection. Driven by advanced MSA XCell® Sensor Technology,  the ALTAIR 5X Gas Detector delivers  faster response time, better stability, accuracy, longer service life, and cost savings over the life of the instrument.

    • MotionAlert feature option tells others that user has become immobile.
    • InstantAlert feature provides manual alarm to alert others as to a potentially hazardous situation.
    • PID option allows for accurate, reliable VOC response with programmable reference factors.
    • Large buttons and bright display provide easy operation, even when users wear gloves.
    • Exclusive end-of-sensor warning cautions users when unit’s sensor nears end-of-life.
    • Rugged overmolded polycarbonate housing provides unsurpassed durability, including ability to survive 10-ft. (3m) drop; IP65-certified.
    • Field-proven integral pump provides consistent gas flow, eliminating concerns of externally-attached components.

    Detection of hydrofluoric acid / hydrogen fluoride (HF gas)

    With the increasing use of electric power in today’s cars, boats, and ships, the likelihood of fires in lithium-ion batteries increase proportionally. Fires in these battery types not only generates immense heat, but also the extremely toxic gas Hydrogen fluoride. Mixed with water hydrofluoric acid is created. Both the gas and acid easily penetrate skin and muscles and often even pass barriers of commonly used PPE, with the result of damaged tissue and cell membranes.  

    Safenor is currently working on putting together a complete portable system for all kinds of emergency services. Individual units are already available for purchase.

    Safenor E1000 HF

    HF gas

    E1000 single-gas detector for HF gas. This device has an electrochemical sensor and a rechargeable battery with a run time of up to 300 hours.
    As all other electrochemical sensors, this sensor will not be selective only for HF gas, but also detect and warn user about other acidic gases like hydrogen cyanide and hydrogen chloride.

    The degree of protection can even be enhanced with simultaneous use of fluoride test paper. Especially where there’s suspicion of battery fire in confined spaces and other acidic gases are likely to be present.

    Safenor E4000 HF


    E4000 can detect 2-4 gases simultaneously, e.g. HF, CH4, H2S and oxygen.

    Available sensor types: catalytic, electrochemical, infrared or PID.

    The device is powered by a rechargeable battery offering 8 hours of use with catalytic sensor and up to 300 hours with other sensor types.

    Integral pump is available as an option.

    This devices has an event log that can be downloaded to a computer.

    Fluoride test paper

    Experience has shown that F-paper is one of the most reliable and low cost alternatives in terms of detecting hydrofluoric acid.

    This small sheet of paper can be attached to the visor of a full face mask or on the visor of full body protection suit. In order to detect hydrofluoric acid present on surfaces it’s beneficial to use a 1M hydrochloric acid solution instead of distilled water as it gains a clearer result.

    The paper initially has a light pink colour that changes to light yellow when the acid is present.

    The package contains 200 sheets. A newer version with an adhesive part will soon be launched.

    Accessories and calibration equipment

    A selection of sampling and calibration equipment is avilable upon request.

    The ALTAIR Pump Probe is a rugged sampling accessory for MSA gas detection instruments. Capable of drawing samples from up to 50ft (15m) away.

    Calibration equipment available both for use manually and automatic.


    SafeNor AS
    Varnesveien 34
    3189 Horten


    +47 974 78 999

    VAT no: 911 876 698