CIRAS-3 Operation Manual V. 1.09  44  support@ppsystems.com 
 
Section 4.  System Components and Assembly 
CIRAS-3 Main Console 
The CIRAS-3 console houses the IRGAs, gas circuit including absorber columns with chemicals, gas and 
electrical connections, on-board computer, color display and keypad.  The console is the base instrument 
for several different possible configurations of use.  The range of applications includes leaf gas exchange, 
chlorophyll fluorescence, canopy assimilation, soil respiration, analyzer platform for custom-built 
chambers (both closed- and open-system), and direct measurement of gaseous CO
2
 and H
2
O. 
 
 
 
 
 
 
 
 
 
On the front side of the console you find the user interface with its 30° display and keypad group used to 
navigate the CIRAS-3 console menus.  Access to the Li-ion battery pack(s) and internal mechanical and 
electrical components is achieved by loosening the two captive screws (turn counter-clockwise to release) 
and gently lowering the door. 
System Power 
Power Supply Adapter 
An AC power supply adapter (120/240 VAC / 50/60 Hz) is included with the CIRAS-3. If mains power is 
available the system can be operated continuously using the power supply adapter.  This same adapter is 
also used to charge the internal battery packs.   You must use the power supply adapter supplied by 
PP Systems as other types may cause damage to the instrument. 
transflective LCD 
optimized for field use 
. 
B.  Tactile feel keypad and 
function keys for 
navigation 
 
C.  Battery compartment 
and main access to