After the instrument completes the adjustment, you should perform a bump test or a full calibration check using fresh calibration gas. You will then introduce the calibration gas to each sensor sequentially, following the on-screen prompts.
How to Access the MSA Altair 4XR Calibration Mode
, LEL for combustible gas, CO or H2S for toxic sensors) Calibration gas regulator Calibration cap or sealed enclosure Step-by-Step Calibration Procedure The calibration process involves placing the sensors in a known concentration of gas and allowing the instrument to adjust its readings. Following the visual prompts carefully minimizes the risk of error during the procedure.
Troubleshooting Common Calibration Issues Occasionally, the calibration process may not proceed as expected. Verify that the instrument is clean and dry, as debris or moisture can affect sensor accuracy.
How to Access the MSA Altair 4XR Calibration Mode
This step confirms that the sensors are responding correctly. You must ensure you are in a safe environment, free from the target gases you intend to calibrate to, or use certified calibration gases in a controlled setting.
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