Observing and Recording Leaf Gas Exchange
CIRAS-2 Operator's Manual Version 2.04
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Settle Time (Seconds)
The minimum amount of time (seconds) required to stabilize before recording. After the settle time has
been achieved, a record may be taken.
Steady Pn Options
Use Steady Pn
Requires that assimilation rate is stable by +/- your chosen value over a defined time (approximately 11
seconds). Once this condition has been met, the record(s) will be taken. Select to enable this function.
To disable, deselect it.
Steady Pn Value
Enter an acceptable value (+/-) for Pn variability before data can be recorded.
Recording at Pre-set Intervals
In this mode, a record is taken after the elapse of the Interval (and optionally after Steady Pn has been
reached). The software will continue recording until stopped. The Enable Recording Blocks option must
be cleared, and the Record Interval entered in seconds.
Recording Block Options
Summarizes cumulative recording time based on recording interval, frequency and records.
Record Interval (seconds)
Refers to the amount of time (seconds) between records. CIRAS-2 transmits data every 1.6 seconds. If
an interval has elapsed, the next available record will be taken.
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