Tip & How-To about MSA Altair 4 Multigas Detectors - 10085989

How to calibrate the MSA Altair 4

Want to calibrate the MSA Altair 4 Gas Detector or MSA Altair 4X? Here's how:
1. Turn the MSA Altair 4 and MSA Altair 4X on in normal reading mode. Do this by pressing and holding the center button.
2. Once the MSA Altair 4 and MSA Altair 4X is in normal reading mode, you need to send it into calibration mode. Do this by pressing and holding right beeps at you and the screen asks you to zero the monitor (sensor refresh on the MSA Altair 4X).
3. Now that the screen is asking for confirmation, press the center button once to confirm. This will send the monitor into zeroing mode. Now is a good time to set the monitor down, and grab your calibration gas, regulator, and calibration adapter.
4. Open the valve on your regulator. This is a very important step so you do not ruin your calibration gas cylinder. Now screw it in to your calibration gas cylinder. Close the regulator once you hear gas spewing out of it. This is the signal to know your regulator is good to close. Continue screwing in the regulator until it stops. Do not overturn it.
5. Attach the tubing to the hose barb on your regulator. Make sure the tubing is also connected to your calibration adapter.
6. Wait for the screen to come up asking for you to apply calibration gas. Once this screen comes up, press the center button again to confirm. Screw the calibration adapter in to your gas detector. Once it is screwed on, turn on your gas.
7. Make sure your calibration gas values on the screen match what is on your calibration gas cylinder!
8. Once the calibration procedure is completed, turn your gas off and remove the calibration adapter from the MSA Altair 4 or MSA Altair 4X. The screen will go back to normal reading mode within a few seconds.
9. Congratulations! You have officially calibrated your MSA Altair 4 or MSA Altair 4X gas monitor. Make sure to record these readings in your calibration log!

If you come up with an error, the most likely bet is a bad oxygen sensor, but it could be a number of other issues. Feel free to email me.

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1 Answer

My detector could not be switched on

Keep the power button pressed for about 3 seconds until it turns on (the middle button). If it doesn't then charge it.

Apr 25, 2014 | MSA 10107602 ALTAIR 4X Multigas Detector...

1 Answer

sensor error comes up when turned on

Most likely this is a bad oxygen sensor. We have an informational page up at MSA Altair 4 Gas Detector which should help you find the correct parts. The oxygen sensor is here:

MSA Altair 4 Oxygen O2 Sensor

If there's anything we can help with, like walking you through calibration or how to install the sensor, please send me an email. james@idealcalibrations.com

Apr 12, 2013 | MSA Altair 4 Multigas Detectors - 10085989

1 Answer

Low oxygen alarm all the time reads fresh air at .8

Your oxygen sensor is unfortunately dead. You need to find an install a new one. You can get one here for fairly cheap: MSA Altair 4 Oxygen O2 Sensor .

I don't have a video on how to install the sensor yet, but if you need me to I can walk you through over the phone. Send me an email james@idealcalibrations.com



Mar 20, 2011 | MSA Altair 4 Multigas Detectors - 10085989

1 Answer

Early Warning EW-3400 Radar Detector Digital Compass Calibration??

I looked at another simuilar Detector and read on Digital Compass Calibration and through the process of elimination found that if I Press CITY for 3 sec.'s COMPASS CALIBRATION showed on the display. Then it says TURN YOUR VEHICLE SLOWLY 2 TIMES to CALIBRATE. Then press the CITY button to complete the calibration. Done. It worked my Early Warning EW-3400 Radar Detector's Compass is now Calibrated.
Thanks for asking.

May 11, 2008 | EW3100 Radar Detector

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