Sensor Missing Alarm; Sensor Life Warning; Sensor Life Indicator; Monitoring Toxic Gases - MSA ALTAIR 4X Manuel D'utilisation

After 30 seconds of inactivity, the full Motion Alert alarm is triggered.
This alarm can only be cleared by pressing the

2.4 Sensor Missing Alarm

The instrument enters the Sensor Missing alarm if the instrument
detects that a sensor is not properly installed in the instrument.
If a sensor is detected as missing, the following occurs:
• "SENSOR ERROR" displays
• The flag above the sensor detected as missing
flashes on the display
• Alarm sounds and lights flash
• Yellow Fault LED is on solid
• If there is a sensor error at startup, the instrument shuts OFF
in 60 seconds.

2.5 Sensor Life Warning

If a sensor is nearing its end of life, the instrument warns the user
following a sensor calibration. While the sensor is still fully functional at
this point, the warning gives the user time to plan for a replacement
sensor and minimize downtime. The
See calibration section 3.9 for more details.

2.6 Sensor Life Indicator

If the instrument cannot calibrate one or more sensors, the instrument
displays "Span" "Err" followed by the
sensor life. See calibration section 3.9 for more details.

2.7 Monitoring Toxic Gases

The instrument can monitor the concentration of the following toxic
gases in ambient air:
• Carbon Monoxide (CO)
• Hydrogen Sulfide (H 2 S).
The instrument displays the gas concentration in parts per million (PPM)
3
or mg/m on the Measuring page until another page is selected or the
instrument is turned OFF.
button
▲
is continuously displayed .
and to indicate end of
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