In Case Of Electrical Power Outage - PICARRO G2302 User Manual

Clicking the Shutdown button opens a window that offers three different
shutdown states for the Analyzer.
Selecting "Stop Analyzer Software Only" stops the gas flow and shutdowns the
software. It does not shut off the main computer.
Selecting "Turn Off Analyzer in Current State" stops the gas flow and
shutdowns the software. It also shuts down Windows and powers off the
instrument completely.
Selecting "Turn Off Analyzer and Prepare for Shipping" prompts the system
to increase the cavity pressure until it reaches atmospheric pressure. The status
log will indicate the pressure as the cavity is filled. The proportional valves will
then be closed, and the software will terminate, Windows will shut down, and the
instrument will power off completely.
The most commonly-used modes are first two the quick shutdown procedures
above, to be used when the instrument will be off overnight or for a few days,
less than week. If the instrument will be unused for a longer period of time, or
requires transport, the second procedure ("prepare for shipping") is used. The
main difference between the two shutdown states is that in the first case, the
analyzer gas cell is stored at sub-atmospheric pressure, whereas the second
mode pre-fills the cavity with a clean dry gas prior to shutdown. The instrument
should always be supplied with dry gas before shutting down in either mode by
attaching dry gas to the gas inlet port while the instrument is operating. This
prevents condensation inside the system as it cools down. Five minutes of flow is
sufficient. If the instrument is likely to experience low storage temperatures, the
gas should be dry enough so as not to cause condensation (<1000 ppmv water
concentration, for example, is sufficiently dry). If the instrument will be stored at
typical room temperatures, however, the gas need not be particularly dry and the
analyzer can be shut down safely after it has been purged for a few minutes with
normal room air.
You are prompted to confirm the shutdown. Select ok to initiate the shutdown
procedure. Select cancel to abort the shutdown.

In Case of Electrical Power Outage

If power to the analyzer is cut-off for any reason the analyzer will cease
operation. However, when the power is reapplied, the analyzer will restart
automatically, the Picarro software tools will properly close out previous files and
open new files for data collection so that previously collected data, instrument
Picarro G2302 Analyzer User's Guide
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