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• Press
READ /TIMER
to enter in the factory calibration restore screen. The instrument asks for
confirmation of user calibration delete.
• Press
ZERO/CFM
to restore the factory calibration or press
RANGE/GLP
again to abort
factory calibration restore.
• The instrument briefly indicates
“donE”
upon restoration of factory calibration prior to returning
to measurement mode.
GLP
To save battery, the instrument shuts down after 10 minutes of non‑use in measurement mode and
after 1 hour of non‑use in calibration mode.
If a valid measurement was displayed before auto shut
off, the value is displayed when the instrument is switched on. The blinking
“ZERO”
means that
a new zero has to be performed. One fresh battery lasts for around 750 measurements, depending
on the light level. The remaining battery capacity is evaluated at the instrument startup and after
each measurement.
The instrument displays a battery indicator with three levels as follows:
• 3 lines for 100 % capacity
• 2 lines for 66 % capacity
• 1 line for 33 % capacity
• Battery icon blinking if the capacity is under 10 %.
If the battery is empty and accurate measurements can’t be taken anymore, the instrument shows
“dEAd bAtt”
and turns off.
To restart the instrument, the battery must be replaced with a fresh one.
BA
TTERY MANAGEMENT