Rae QRAE II, Руководство пользователя

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QRAE II User Guide
Page 13
Note: If datalogging is off, you will not see the datalogging icon (see User Interface
Icons, page 10).
3.3
Inverting The Display
The QRAE II is easy to read, whether held in the hand or clipped to a belt. To flip the
screen, press the [Y/+] key and hold it down for 3 seconds. When the image inverts,
release the key.
3.4
Testing The Alarms (Anytime)
Under normal non-alarm conditions, the buzzer, vibration alarm, LED, and backlight can
be tested at any time by pressing [Y/+] once.
3.5
Pump Status (QRAE II Pump Only)
IMPORTANT!
During operation, make sure the pump inlet is free of obstructions. Obstructions can
cause premature wear on the pump, false readings, or pump stalling. During normal
operation, the pump icon alternately shows inflow and outflow as shown here:
If there is a pump failure or obstruction that disrupts the pump, you will see this icon
blinking on and off:
If you see this blinking icon, consult the Troubleshooting section of this guide.
WARNING!
Always operate the QRAE II Pump with an external filter.