7 LT45-en-US_V2.1 6/20
Measurement Considerations and User Tips
For maximum accuracy allow the light being measured to fall directly on the sensor as
perpendicular as possible with a minimal angle of incidence.
When the meter is not in use, please keep the protective cap in place, covering the light sensor.
This will prolong the life of the sensor.
When the meter is to be stored for long periods, please remove the battery and store it
Avoid areas of high temperature and humidity when using this instrument.
See Specifications for accuracy with angular deviation.
Battery Replacement and Maintenance
Cleaning and storage
1.
The white plastic sensor dome should be cleaned with a damp cloth when necessary. Use
only a mild soap if needed. Do not use solvents, abrasives, or harsh detergents to clean the
dome.
2.
Store the meter in an area with moderate temperature and relative humidity.
Battery Replacement
When the battery power decreases to a critical level, the battery symbol will appear as empty on
the LCD. Replace the 9V battery located in the rear battery compartment. The battery
compartment slides easily downward for removal (in the direction of the printed arrow on the
rear of the meter). Ensure that the compartment cover is securely fastened before using the
meter.
Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire, batteries may
explode or leak. If the meter is not to be used for 60 days or more, remove the battery and store
separately.
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