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Operation
Zero adjustment function
The zero point of the sensor curve can be adjusted by low intensities of light for optimum meas-
urement results. After switching on the instrument, install the protective cap in order to cover the
complete sensor.
By pressing the button "HOLD/ZERO" for an extended period, the adjustment is started. Wait until
the instrument is successfully adjusted, indicated by an acoustic signal.
The value 0.00 Lux appears on the display. During adjustment, avoid strong solar radiation.
Data hold function
By momentary activation of the button "Hold/Zero", the measurement value is saved until the but-
ton is again activated.
Replacing the battery
In the delivery condition, the instrument is already equipped with a 9 V alkaline battery,
Type 6F22. As soon as the Low-Bat indication appears on the LC display, the battery must be re-
placed, because the correctness of the indication is no longer be ensured. To replace the battery,
proceed as follows:
Use a screwdriver to open the battery compartment and remove the old battery.
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Insert a new battery of the same type.
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Thereby, make sure that the polarity is correct
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Make sure that the battery is firm and secure.
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Install the battery compartment cover on the instrument.
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Firmly attach the battery compartment cover
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The end user is legally obliged (battery law) to return all used batteries and battery packs (button
cell to lead battery); disposal in the normal domestic waste is prohibited. Used batteries and bat-
tery packs can be disposed of in community disposers (recycling depot), which are obliged to ac-
cept them.
Make a contribution to environmental protection!
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Testboy
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