Shutdown Procedure - PICARRO G2302 User Manual

sample A at t=0
sample B at t=1
sample C at t=2
hardware
software
data file
Figure 3 - Overview generalized schematic of Picarro analyzer system hardware, software,
The samples A, B, and C are introduced into the analyzer sequentially by a
sampling module, if present. The sampling module could be a set of customer-
supplied valves, a valve manifold, a discrete sampling module, or other device.
The timing of sample introduction is controlled by the coordinator or valve
sequencer software. The analyzer measures continuously and reports the data to
the GUI which saves a single file where all data is reported as a function of time.
The coordinator gets data from the GUI and creates a single file, the data is
reported as a function of sample.

Shutdown Procedure

CAUTION: A flow of clean, relatively dry gas should always be
directed through the instrument for several minutes prior to
shutdown. Trapping a high-moisture content gas sample in the
cavity can cause condensation damage to the mirrors as the
instrument cools from its operating temperature.
Picarro G2302 Analyzer User's Guide
Rev. B 1/14/11
A B
Sampling
Analyzer
GUI Coordinator
all data
t=0 to t=3
and data file generation.
C
data for
A
t=0 to t=1
data for
B
t=1 to t=2
data for
C
t=2 to t=3
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