MSA ALTAIR Oxygen (O2) 19.5/23 Vol % Adjustable
  • O2
MSA ALTAIR Oxygen (O2) 19.5/23 Vol % Adjustable

Product Code - 10092523

exc VAT £89.00 inc VAT £106.80
The MSA Altair single gas detector is a maintenance free monitor, suitable for detecting oxygen deficiency. This gas monitor is easy to use and features a highly visible and audible alarm system.
Description / Features / Spec


MSA ALTAIR Oxygen (O2) 19.5/23 Vol % Gas Detector (Adjustable) 

The Altair O2 gas detector from MSA is an economical, high performing monitor with the ability to detect oxygen depletion levels in industrial applications.

The oxygen version of the Altair accommodates a fast responding 20 series sensor.

The rugged suspension clip on the instrument will give you the confidence that it can be worn almost anywhere. 

Testing the Altair O2 monitor is important and a simple bump check can be carried out with a single button press.  Bump test results are shown on the screen for 24 hours and can be used as a checkmark.

Other testing equipment available for the Altair is the QuickCheck and the Galaxy which is a standalone calibration test system.

Key Features

  • Minimum of two years operational service life
  • Large, easy-to-read numeric display shows unit lifetime, alarm, conditions, set points, peak reading and hours in alarm since activation
  • Housing is thick and rubberised with a tight seal offering protection from accidental drops - tested to withstand a 3m drop test.
  • A high structural stability is offered through metal screw inserts on Altair
  • Automatic recording of the latest 25 alarm events


Range  (ppm) 0 to 25% Vol
Size 81 x 51 x 23 mm
Weight 85g
Operating Range -20 – +50 °C
Humidity 10-95% RH non-condensing
Instrument Life >2 years at an average of 2 minutes of alarm per day
IP Rating IP 67 – protection against water and dust ingress
  • Visual - Ultra-bright LEDs 320°C
  • Audible – 95dB at 30 cm
  • Strong vibration alarm
  • 1st Alarm – 19.5%
  • 2nd Alarm – 23%
Approvals Europe – ATEX II 2G EEx ia IIC T4 (-20°C to +50°C)
Warranty 2 years or 1080 minute alarm under normal conditions
What's Included?
  • Altair Instrument
  • User manual
  • Reviews

    0 Customer Review(s)

    Be the first to review this product

    Write Your Own Review

    You're reviewing: MSA ALTAIR Oxygen (O2) 19.5/23 Vol % Adjustable

      1 2 3 4 5

    We offer a range of delivery options to suit your needs including FREE UK (mainland) delivery on all orders over £75 ex VAT, which is web-exclusive.  All UK and International orders are sent using a fully trackable and reliable courier service.  You will receive an email notification upon despatch of your order and tracking details can be requested at any time should you wish to check the status of your delivery.  


    International customers also have the option to choose their own courier.  See the delivery page for more details.

    Shipping costs are dependant on delivery address and will be calculated at the time of checkout.  Delivery costs are based on a maximum weight of 20kg and maximum dimensions of 40 x 40 x 40 cm.  For orders exceeding these weights and dimensions, please contact us on [email protected] for a delivery quote.

    For UK mainland orders, goods will normally be delivered within 3 - 5 working days and for all other orders within 5 - 10 working days.  Delivery timescales are based on stock availability and are subject to change at any time. 

    Note: We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.



    Should you wish to cancel an order or return unwanted goods please follow the procedures detailed below to help us ensure cancellations/returns are processed as quickly and efficiently as possible.

    Simply log on to your customer account, note the order reference number and email the full cancellation details to [email protected] or contact us on 0844 550 0001. Assuming the order has not been despatched we will cancel.

    You have the right to cancel the purchase of goods without having to give a reason at any time within the “cooling off period” of seven working days, beginning the day after you take delivery of your order.

    You must notify us of your cancellation in writing via email to [email protected] or to our contact address. (Details Here)

    If you are in possession of the goods you are under the duty to retain them and take reasonable care of them.

    You must send the goods back to us in their original condition to our contact address at your own cost (unless we delivered the item to you in error or the item is damaged or defective) as soon as possible once you have cancelled the contract.

    Alternatively we will collect the goods from you which will incur a charge no greater than the actual cost of arranging the collection and shipping. In this case you must make the goods available for collection. We will contact you to make further arrangements.

    We reserve the right to make a charge not exceeding our direct costs of recovering the goods if you do not return the goods or return them at our expense.

    Upon receipt of returned items in satisfactory condition we will arrange a full credit by the same method used to pay for the goods originally. Any credit due will be processed within a maximum of thirty days.

    Note: If you wish to return goods for refund or exchange after 14 days, a re-stocking fee of 20% of the full order total will apply.

    If upon receipt of goods you find them to be faulty, damaged or if you have been incorrectly supplied an item, you should notify us within 24 hours by contacting 0844 500 0001 or [email protected] and quoting your order number and contact details.

    Frontline Safety will arrange uplift of any damaged or wrongly received goods and if on inspection of goods we also find them to be damaged, faulty or incorrectly supplied, we will offer replacement goods or provide a full refund.

    We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.

    Note: If your goods happen to develop a fault out with the standard returns period but within supplied warranty period or if you require any additional assistance, please contact us on 0844 550 0001 or email [email protected]


    All postage, handling, customs and duty charges for all returned goods are the responsibility of the customer. We recommend using a fully traceable, insured service as goods are your responsibility while in transit.

    Related Blog Post

    MSA Altair Single Gas Detector Reviewed

    If the Altair needs to be tested then this can be done with a single button press. Confirming ‘Gas Test’ will allow the unit to carry out a simple bump check which is recorded alongside 25 of the latest alarm events. There’s also no need for additional accessories to carry out a bump check.

    Product Video

    You may also be interested in the following product(s)