INTERPRETATION OF PARAMETERS
3/31/2008 Rev. 4.3 4-1
INTERPRETATION OF PARAMETERS
CO
2
(in) The amount of CO
2
(in ppm) at the inlet of the analyzer
CO
2
(out) The amount of CO
2
(in ppm) at the outlet of the leaf chamber
CO
2
(dif) The difference between the CO
2
in and CO
2
out values.
H
2
O (in) The amount of H
2
O (in kPa) at the inlet of the analyzer
H
2
O (out) The amount of H
2
O (in kPa) at the outlet of the leaf chamber
H
2
O (dif) The difference between the H
2
O in and H
2
O out values.
PAR Photosynthesis Active Radiation in terms of цmol/m
2
/s
FLOW The set flow rate of the analyzer (in lpm)
W Mass flow rate in terms of mol/m
2
/s
T (air) Temperature of the ambient air (in °C) in the leaf chamber. This
requires the temperature sensor to be installed for meaningful results.
ATM Atmospheric pressure (in kPa)
Pn Net photosynthesis rate in terms of цmol/m
2
/s
InTCO
2
Internal CO
2
цmol/mol
T (leaf) Temperature of the leaf as measured by infrared temperature sensor
(in °C)
C Leaf Stomatal conductance mmol/m
2
/s
Internal T Temperature of the analyzer environment (in °C)
E Transpiration Rate mmol/m
2
/s
“EXIT to quit” Aborts current operating function to the default menu
“ENTER → file menu”
Allows the user to enter the file menu system:
“SHIFT 2 (D) = del”
Command to delete an existing file; press
+
“EXIT file menu” Returns to the default menu
“Y = delete ALL”
Command to delete all existing files; press
+ . This must
be confirmed before the instrument will erase all the files.
“Date” Current running date
“Time” Current running time
“START/ENTER to go”
Reminds the user that pressing
will start the measurement
process.
“ENTER to select”
Notifies the user to press
to perform the listed functions:
“Change clock” Allows the user to change the time and date settings
“Calibrate CO
2
” Allows the user to calibrate the zero and span for CO
2
measurements.
