OPERATION OF THE AREARAE
2-10
2.4 Data Protection
When the monitor is turned off, all the current real-time data
including TWA, STEL, Peak and elapsed time are erased.
However, the datalog data is preserved in non-volatile memory.
Even if the battery is disconnected, the datalog data will not be
lost. When the monitor is off, the real-time clock will continue to
operate until the battery is completely drained (usually in 5 to 7
days without any charging).
If the battery is completely drained or is disconnected from the
monitor for more than 30 minutes, the real-time clock will be
lost. In this case, the user needs to enter the real-time clock
information again, as described in Section 4.7.5.
Datalog-enabled monitor versus non-datalog monitor
The AreaRAE is available with datalogging and without
datalogging. A Datalog monitor allows storing the gas
concentration readings (see Section 2.10: Datalogging
Operations).
During the power on sequence, a letter “D” following the
version number indicates that the monitor is configured as a
datalog-enabled monitor. The absence of a letter “D” indicates
a non-datalog monitor.
You may upgrade a non-datalog monitor to a datalog monitor.
Call RAE Systems for information on how to order the upgrade
kit.
