CIRAS-3 Operation Manual V. 1.09 198 support@ppsystems.com
Typical r
b
values for the following cuvette types are:
b
In the example below the leaf stimulant consists of a simple water-resistant envelope with an 18 mm
circular opening. The envelope may be constructed of plastic sheet or thin aluminum foil, or by using clear
tape. It can be closed on 3 sides, allowing new filter paper to be exchanged with older, dirty filter paper,
or sealed on all 4 sides and discarded after a few uses. The area dimensions of the sample plastic
envelope shown below are 45 x 75 mm. The cuvette upper and lower foam rubber gaskets must not
come into contact with the filter paper once it is placed in the cuvette, as seen below, right.
Remove the LED light unit from the PLC3 and connect the CIRAS-3 to mains power using the external
power supply provided by PP Systems. Go to Settings (F2) and set the following environmental controls:
• CO2 Reference - Fixed reference air = 0
• H2O Reference - Fixed % of reference = 0
• Cuvette Flow = 470
• Light Intensity = 0
• Temperature Sensor Measurement = IR Thermometry
• Temperature Control Type = Cuvette temperature
• Set Temperature = 25
o
C
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