CIRAS-3 Operation Manual V. 1.09 151 support@ppsystems.com
Initial Test Measurement Sequence
A test measurement sequence can be performed initially to establish a base line prior to recording data if
required. This can be very helpful in determining the CO2 Max and Time Max expected for your soil or
vegetation being measured. Simply press Begin CPY/SRC and follow the prompts displayed in the
status bar in the lower left hand corner of the display. During data collection, “Data point xx calculated”
will be displayed until the end of measurement followed by a “Sequence complete” message. The
following will be displayed until the end of measurement which is determined by user settings of CO2 Max
or Time Max. The sequence can be aborted at any time by hitting Abort CPY/SRC (F6). Note, data is
not recorded during this sequence.
Recording Measurements
Press Operations (F1), Rec Options (F2) to set up a recording session. Note, the only recording option
available for closed system measurements is Manual Recording (See Manual Recording on page 84
).
Data can be stored in internal memory or external memory (USB thumb drive) as described earlier in this
manual. When you are happy with the named data file, press Start (F2) to begin the measurement
sequence and then Back (F1) to the Numerical or graphical screen. Press Begin CPY/SRC (F6) to begin
measurement sequence.