TARGAS-1 Operation Manual V. 1.02  72  support@ppsystems.com 
 
Change/View plot number. Range: 0–1000. 
Stops the SRC process and returns to the Processes Menu. 
Continues to SRC Flushing screen (Step 5). 
 
SRC Flushing (Step 5) 
At this stage, the SRC chamber should be held in the air to allow it to flush out prior to placing it on the 
soil. During the flushing, the internal fan of the SRC is sped up to help flush. The number at the top right 
of the screen (23 in this case) is the countdown. CO
2
 concentration is displayed during this step. When 
completed, SRC Step 6 will be displayed. 
 
SRC – Prepare Chamber Menu (Step 5) 
Current CO
2
 concentration (ppm). 
Countdown in seconds (from 25 to 0). 
Stops the SRC process and returns to SRC – Other Settings menu (Step 4). 
SRC – Start Measuring (Step 6) 
At this stage, the SRC chamber should be placed on the soil. The internal fan is set to a low speed to 
provide an even concentration of CO
2
. The number at the top right of the screen (7 in this case) is the 
countdown. CO
2
 concentration is displayed during this step. When completed, the Data Plot Screen will 
be displayed.