User Manual

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When the Man Down alarm is activated, the buzzer sounds and LEDs flash continuously, and a countdown
begins.
 If the MicroRAE’s user presses [Y/+] for “Yes” in response to the “OK?” question on the
screen before the countdown reaches zero, the Man Down alarm stops and the main reading
screen is displayed.
 If the person does not press [Y/+] for “Yes” in response to the “OK?” question on the screen
before the countdown reaches zero, the Man Down alarm is sounded and LEDs flash
continuously.
 If the person presses [MODE] during the countdown, answering the “OK?” question by
pressing [MODE] for “No,” the Man Down alarm starts.
If wireless connectivity is enabled, and the QRAE 3 is connected to a network, a Man Down message is
also sent to remote observers.
7.7. Calibration Status
If any sensor requires calibration, then “Calibration Overdue” icon is shown by the sensor name
in the display:
Calibration is required if:
 The sensor module has been replaced with one whose calibration is overdue.
 The defined period of time between calibrations has been exceeded, according to the
policy set for the instrument.
 If you have changed the calibration gas type without recalibrating the instrument.
 The sensor has failed a previous calibration.