38
SERVICE
+
Figure 30 Level the LP-80 probe and external sensor
5. Turn on the LP-80.
6. Press
ENTER to check that the PAR level meets the 600 μmol/(m
2
s) threshold for
calibration.
If necessary, adjust the sun exposure of the LP-80 to meet the threshold.
NOTE: The PAR level must be above 600 μmol/(m
2
s) for the calibration to update. In general, a clear day where
the sun is visible will be above 600 μmol/(m
2
s). Overcast days are typically less than 600 μmol/(m
2
s).
7. Press
MENU to navigate to the Configuration tab.
8. Press
ENTER to select Calibration.
A reminder screen will appear (
Figure 31 Calibration reminder screen
9. Move out of the probe area to minimize any interference with the measurement.