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Alarms Summary
* For oxygen, “low alarm limit” means a concentration is lower than the low alarm limit.
Testing Alarms
Under normal operation mode and non-alarm conditions, the audible, visual, and
vibration alarms can be tested at any time by pressing the [Y/+] key.
Gas exceeds “High Alarm” limit
3 beeps/flashes
per second
Gas exceeds sensor’s measurement
range
3 beeps/flashes
per second
Gas exceeds electronic circuit’s
maximum range
3 beeps/flashes
per second
Gas exceeds “Low Alarm” limit*
2 beeps/flashes
per second
Crossed pump icon flashes
Inlet blocked or pump failure
3 beeps/flashes
per second
Empty battery icon flashes
1 flash, 1 beep
per minute
Calibration failed, or needs calibration
Zero gas reading measures less than
number stored in calibration