TARGAS-1 Operation Manual V. 1.02
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Settings (Step 3).
Abort
Stops the SRC process and returns to SRC – Other Settings (Step 4).
Only the individual CO
2
measurements are saved to the USB flash drive.
Process data is discarded.
New
Stops the SRC process and returns to SRC – Other Settings (Step 4).
Results are saved to the USB flash drive.
The measurement sequence will terminate when the maxDC or maxDT is reached. If maxDT is reached
first, the message “Time limit” will appear in the status box. If maxDC is reached first, the message “CO2
limit” will appear in the status box.
For more information on the theory and calculation of soil
respiration/canopy assimilation, please refer to Mass Flow
Calculate the mass flow of air (
) entering the cuvette per unit leaf area
The TARGAS-1 mass flowmeter is calibrated to read the volume flow (
(STP). The Ideal Gas molar volume is 22.414 L mol
= projected leaf area (measured in cm
= volume flow (measured in cc min
and all subsequent equations are presented as quantities per unit leaf area. The projected
, and this is the default leaf area used in calculations. However, if measurements
spreadsheet program that allows
recalculation of all gas exchange results with different Leaf Area.
Calculate transpiration rate (
) from the partial pressures of water vapor of the air entering (
out of the cuvette (with the addition of transpired water vapor) is (