00038119.DOC, Version 1.0
11/12
Spectrum for light sensor
OPERATION
Please follow the points below before beginning with the first measurement:
1. Remove the battery cover on the rear side of the device and connect the 9 V block battery with the
poles. Make sure that the poles are correct. Replace the compartment cover.
If the device is not used for a longer period (approx. 1-2 weeks), please remove the battery to prevent
damage in case of battery leakage. When replacing a discharged battery, remove the old battery from
the battery compartment.
CAUTION!
Danger of explosion when battery is replaced improperly.
Only replace by the same type or similar types recommended by the manufacturer.
Remove empty battery in accordance with the instructions of the manufacturer.
BATTERY DISPOSAL NOTICE
Please dispose of discharged batteries properly.
Batteries are hazardous waste and should not be disposed of with regular domestic waste!
Please take discharged batteries to a collection center near you.
2. Remove the protective foil from the LM-50's LCD.
3. Prior to each measurement, remove the protective cap and replace it after completing the measurement.
4. Set the HOLD/ON/OFF control to position "ON" to switch on the device. An indication is displayed. Three
measuring ranges can be selected [0-2,000 lx, 2,000-20,000 lx (measurand x 10), 20,000-50,000 lx
(measurand x 100)] with the RANGE control. As long as the indicated measuring value is preceded by
zeros (e.g. 003, 029) the RANGE control should be used to switch to the next lower range to improve the
resolution and accuracy of the measurement. If "I" is indicated on the display the measuring value is out
of range i.e. 50,000 lx or the measuring value is over the given range and must be adjusted to the next
higher range.
5. If the display indicates the battery symbol, the battery is exhausted and must be replaced.
6. Always switch off the unit after operation to extend battery life. If the device will not be used for a longer
period of time, remove the battery in order to avoid battery leakage.
7. To hold the current measurement set the control HOLD/ON/OFF to position "HOLD". The display
indicates „H“. Now the value before activating the Data Hold function will be held. To deactivate the
function return the switch back to position “ON”.
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light meter
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