TARGAS-1 Operation Manual V. 1.02  111  support@ppsystems.com 
 
 
PAR calibration value, entering a value will begin the Calibration Process 
The current PAR reading based on the Scale Factor 
The current Scale Factor being used 
Returns to the Calibration Menu. 
 
Follow these instructions to calibrate the PLC5 PAR sensor: 
1.  Apply a known PAR light to the PAR sensor. 
2.  Select the button to the right of the “PAR (PAR):” text and enter the PAR value. 
3.  After calibration, a similar message to the one below will be displayed. 
 
 
 
 
Note, the displayed value may not be the value you entered in step 2 above. When the Actual PAR 
value has stabilized (i.e., not changing by more than 1 μmol m
-2
 s
-1
 after 5 seconds), press the OK button. 
To cancel without performing a Calibration, press Stop. 
 
The PAR value entered at the beginning of the Calibration Process. 
Returns to the Calibration Menu with no changes. 
Calculates new Scale Factor and goes to next screen