Sensor Missing Alarm; Sensor End Of Life Warning; Sensor End Of Life Indicator; Monitoring Toxic Gases - MSA ALTAIR 4XR Operating Manual

Motion Alert Activation
To activate or deactivate the Motion Alert feature, press the  button while the Motion Alert Activation
page is displayed. When the Motion Alert feature is active, the Motion Alert symbol ( chapter 2.3
"On-Screen Indicators") will flash every 3 seconds. The device will enter pre-alarm when no motion is
detected for 20 seconds. This condition can be cleared by moving the device.
After 30 seconds of inactivity, the full Motion Alert alarm is triggered. This alarm can only be cleared by
pressing the  button.
2.6

Sensor Missing Alarm

The device enters the Sensor Missing alarm if the device detects that the sensor is not properly
installed in the device or is not functional.
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 device shuts off in 60 seconds.
2.7

Sensor End of Life Warning

If a sensor is nearing its end of life, the device will warn the user following a sensor calibration. The
sensor is still fully functional at this point, but the warning gives the user time to plan for a replacement
sensor and minimize downtime. The  symbol will be continuously displayed. For more details see
chapter 3.10 "Calibration".
2.8

Sensor End of Life Indicator

If the device cannot calibrate one or more sensors, the device will display "SPAN ERR" followed by the
Alarm symbol and  symbol to indicate end of sensor life. For more details see chapter 3.10 "Calibra-
tion".
2.9

Monitoring Toxic Gases

The device can monitor the concentration of the following toxic gases in ambient air:
• Carbon Monoxide (CO)
• Hydrogen Sulfide (H
• Sulfur Dioxide (SO
• Nitrogen Dioxide (NO
The device displays the gas concentration in parts per million (PPM) or mg/m
tions page until another page is selected or the device is turned off.
WARNING!
If an alarm activates while using the device, leave the area immediately.
Remaining in the area under such circumstances can cause serious personal injury or death.
The device has four gas alarms for each toxic gas:
• HIGH Alarm
• LOW Alarm
• STEL Alarm
• TWA Alarm
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ALTAIR
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4XR
Description
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on the Normal Opera-
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