OPERATION OF VRAE
2 - 8
Turning off
the multi gas monitor with the AC adapter in
place will result in a display of “Charging..” or “Battery
Charged” and indication of battery voltage. This indicates
that the monitor is off, but the smart charger circuit is now
active.
To turn the unit on from the charge or discharge mode, press
the
[MODE]
key.
Data protection during power off
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. During the power off period, the real
time clock will continue to operate until the battery is
completely drained (usually in 5-7 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.
Datalog versus Non Datalog monitor
The VRAE multi-gas monitor is available either with or
without the Datalog option. During the power on sequence,
a letter “D” following the ve rsion number indicates that the
monitor is configured as a Datalog monitor. Without the
letter “D”, it is a Non-Datalog monitor.
The user can upgrade a Non-Datalog monitor to a Datalog
monitor. Call the factory for information on how to order
the upgrade kit.
