CIRAS-3 Operation Manual V. 1.09  15  support@ppsystems.com 
 
CIRAS-3 Tutorial & Basic Operation 
After being in business for over 30 years we have learned that one thing is for certain.  Very few people 
have the time to read operation manuals from cover to cover.  With that in mind we strongly encourage 
you to take the time to step through this quick and easy tutorial to learn about the general operation of the 
system.  In less than 2 hours you will have learned how to: 
•  Prepare the system for leaf gas exchange measurements 
•  Set up and modify all environmental controls (CO
2
, H
2
O, temperature and light) 
•  Navigate and become more familiar with the user interface 
•  Store and retrieve data from memory 
This tutorial is based on the following system configuration.  If you have our CFM-3 Chlorophyll 
Fluorescence Module you can use it much like the PLC3 Universal Light Unit: 
Part Number CRS300 
PLC3 Universal Leaf Cuvette 
Part Number CRS301 
PLC3 Universal Light Unit (LED) 
Part Number CRS304 
 
 
 
In addition, we recommend that you have the following items available for this tutorial: 
•  CIRAS-3 power supply adapter 
•  One CO
2
 cartridge 
•  USB flash drive 
•  Small tabletop tripod to hold PLC3 Universal Leaf Cuvette 
•  PC or laptop computer 
•  A well-watered, healthy plant for actual measurements.  We recommend a plant that likes high 
light (i.e. tomato, sunflower, etc.) and is typically found growing outdoors for best results.