Span Calibration - MSA Altair 5X Mode D'emploi

3.8.2 Span Calibration

To skip the Span calibration procedure, push the ▲ button.
NOTE: If the SPAN calibration of the combustible sensor is skipped
after a successful ZERO calibration, the combustible sensor
reading may be replaced with a moving display of "PLEASE
WAIT" for a few moments. This is normal, and the instrument is
fully operational once a combustible gas reading reappears.
Span calibration for the indicated sensor(s) is also skipped if neither
button is pressed within 30 seconds.
Because of the different combinations of gases that are possible,
skipping a Span calibration may advance the user to the Span
calibration of another installed sensor, or back to the Measuring mode.
When calibrating with combustible gases > 100% LEL, select the "Yes"
option to prompt "Span Calibration?" BEFORE applying gas to
the instrument.
1. Connect one end of tubing to the cylinder regulator (supplied in
the calibration kit).
2. Connect the other end of the tubing to the pump inlet.
3. Press the ▼ button to calibrate the span of the instrument.
• "SPAN CALIBRATION" flashes
• SPAN calibration starts
• A progress bar shows the user how much of the calibration
is completed
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