Observing and Recording Leaf Gas Exchange
CIRAS-2 Operator's Manual Version 2.04
- 60 -
Please note: The CO
2
reference value (Cr) will not be exactly what you set if the CO2 Control Type
selected is (Supply (Ref) Approximate ppm). It should, however, be stable (fluctuating not more than +/- 2
ppm) at a value within approximately 15-30 ppm of the set value. Precise CO
2
control is available to
within +/- 1 ppm of the set value by using the „Supply (Ref) Set ppm‟ Control Type.
The system is functioning properly if the above conditions are observed. If not, please refer to the
Troubleshooting Section of the CIRAS-2 Technical Manual available in the User section of our website.
Select Recording Options
To begin making measurements, select Recording – Begin from the CIRAS-2 menu bar.
There are four different methods available for recording data:
1. Keypress
2. Timed
3. Response Curve
4. Batch Response Curves