MSA ALTAIR Hydrogen Sulfide Gas Monitor 10092521

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Get years of accurate Hydrogen Sulfide gas detection with the ALTAIR h2s monitor from MSA. Providing over two years of continuous gas monitoring, the MSA ALTAIR H2S Monitor provides safety and compliance with your work sites. The unit displays the months of service life remaining for the unit. This monitor goes into alarm when it detects H2S gas but does not show the level of gas detected. For a single gas monitor with a constant readout of gas levels, consider the Draeger Pac 3500 H2S Detector. Ideal for petrochemical sites, maritime, chemical synthesis, tank maintenance, and wastewater facilities.

Key Features:

  • Sensor range of 0-100 ppm

  • Resolution of 1ppm

  • Alarm set point: Low-10 ppm and High-15 ppm

  • Accurate and durable

  • Maintenance-free gas detection

  • IP 67 water and dustproof

  • Weighs only 4 oz. (without box)

  • Two years continuous monitoring

  • Rubberized housing protects from knocks and falls

  • Comes calibrated with certificate

  • Triple alarm: sonic, visual and vibration

  • Strong alligator clip

  • Built-In testing adapter

  • Large LCD screen

  • Backlit screen

  • One-button operation

  • Data logging

  • Once monitor is turned on, it will stay on for the duration of the monitor’s battery life

Total Weight: 0.45 lbs.


Consider purchasing this item with an IR Reader to interface with the internal controls and data logging information.

Part Number:


More Information
Price $214.00
SKU MSA01-10092521
Product Weight (lbs.) 0.45
Weight 1.5000
Brand MSA
MPN 10092521
Type Single-Gas
Gas Type Hydrogen Sulfide (H2S)
5th Sensor No
Color No
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  1. Christy

    2013-11-19 18:26:48

    What's the sensor range?

    1 answer
    1. Chris Smith

      2013-11-19 18:26:06

      Thanks for your question. The sensor range for the MSA Altair H2S Gas Detector (10092521) is 0-100 ppm.

  2. Ken elliott

    2014-01-07 15:03:50

    Why does it not say the sensor range in the specifications section ?

    1 answer
    1. Ben Nicholson

      2014-01-07 15:03:50

      The sensor range of the H2S monitor is 0-100ppm with resolution of 1ppm.

  3. Beverly

    2014-01-14 17:21:48

    Will this detect a propane gas leak?

    1 answer
    1. Justin McCarter

      2014-01-14 17:21:48

      The MSA ALTAIR Single-Gas H2S Detector is designed to detect hydrogen sulfide.

      For non-commercial propane detection (for example a home application), the BOLO Combustible Gas Leak Detector 500A1200A is an excellent choice.


  4. George Burnett

    2014-03-14 22:39:29

    Does the software and cable come with the monitor in order to download the readings onto a PC?

    1 answer
    1. Justin

      2014-03-14 22:39:29

      In order to download the datalogging information from the Altair, a Jeteye Infrared Reader (part #10082834) must be purchased separately. <br>
      The required software can be downloaded for free from

  5. russell

    2014-08-04 15:44:29

    How do you turn it off?

    1 answer
    1. Justin

      2014-08-04 15:44:29

      The MSA Altair Single Gas Monitor does not turn off once it has been activated. It will continuously be sampling the air for its entire two year life span. The time remaining for the monitor will be displayed on the screen.

  6. Sergey

    2015-01-30 22:32:09

    I've got a sealed box with MSA Altair H2S Gas Detector, on a seal is written "Activate By: DEC14" now is already January 2015. Can I still use the gas detector if I activated it later then its suggested date?

    1 answer
    1. Chris

      2015-01-30 22:32:09

      The MSA Altair single gas monitors leave the factory with a sticker indicating that you have 1 year to turn the unit on. Then a 2 year run-time after that. If you go past the initial 1 year period, the unit will still work. Once activated, it will have the usual 2 year countdown. Having waited, it is possible that the battery might run down before the 2 years are up. That said, battery life is quite dependent on how often the alarms go off, as this drains the battery. If the battery were to run out near the end, outside the 3 year (1+2) ‘life’ of the unit, MSA would likely not cover that under warranty.

  7. Beth

    2015-03-30 23:09:41

    Is the clip that comes on the back of the MSA Altair H2S Monitor sold separately? If so, where can I get them. We have broken clips with good monitors that need to be replaced.

    1 answer
    1. Chris

      2015-03-30 23:09:41

      The clips for the MSA Altair H2S Monitor (Model #: 10092521) can indeed be purchased separately. There are two different types of clip for this monitor:<br><br>

      MSA Clip, Suspender Clip (standard) – Part#: 10040002 – This is the standard clip that comes with the gas all MSA Altair model gas monitors.<br><br>

      MSA Stainless Steel Clip, Suspender Clip – Part #: 10069894 – This is the slightly upgraded version of the standard clip, but is made from stainless steel. <br><br>

      We sell both versions.

  8. Nora

    2015-04-15 21:43:41

    How can I access the data log to determine exposure?

    1 answer
    1. Chris

      2015-04-15 21:43:41

      The MSA Altair single gas monitors store event log information. Some of this can be accessed from the instrument directly. For a more complete download of available date, an infra-red (IR) reader is available, and software to use with your PC is a free download. Please see the instruction manual available at the bottom of this page.

  9. JIM

    2015-04-24 21:04:41

    I am looking for a portable detector for H2. This will be used for de-gassing H2 cooled generators. We have analyzers in place to track the purity of the vent stream. what I am looking for is detecting and quantifing a leak without co bleed over and LEL being influenced by low O2 levels. I am in hopes of finding a meter that will show both LEL AND % H2.

    1 answer
    1. Chris

      2015-04-24 21:04:41

      We do have instruments that can be used in situations such as you are describing. The most applicable would be the RKI Eagle. These are quite flexible, and the manufacturer is well accustomed to making custom configurations.

  10. Steve

    2015-09-30 22:10:52

    Do these single gas monitors require bump testing or calibration?

    1 answer
    1. Ben

      2015-09-30 22:10:52

      These monitors require bump testing but do not require calibration.

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