OPERATION
2-5
2.3 Power On/Off
To turn on
the MiniRAE 2000 portable VOC monitor,
press
[MODE]
key for one second and release. The audio
buzzer will beep once and the air pump will turn on. The
display will show “ON!..” and then “Ver n.nn” to indicate
the unit’s current firmware version number. Next displayed
are the serial number, the model number, Operating mode,
current date and time, unit internal temperature, gas
selected, high low, STEL, TWA/AVG alarm limits, battery
voltage, and shut off voltage. Also displayed are internal
mode settings such as User mode, Alarm mode, datalog
time remaining and log periods in the respective order.
To turn off
the MiniRAE 2000 portable VOC monitor,
press and hold the
[MODE]
key for 5 seconds. The
monitor will beep once per second during the power-down
sequence with a count down timer showing the number of
remaining seconds. The message “Off!..” flashes on the
LCD display and the display will go blank indicating that
the monitor is turned off.
Data protection during power off
When the monitor is turned off, all the current real time
data including last measured value 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. While the power is off, the real time clock will
continue to operate until the battery is completely drained
(usually in 4-5 days without any charging). If the battery
