User Manual

5.3. Measuring Light
1. Turn the Power/function/range switch to select the „Lux“-range.
2. Remove the light sensor´s cover
3. Face the photo detector to light source in a horizontal position.
4. Press Select Button: Selects 20, 200, 2000, 20000 Lux ranges.
5. Read the illuminance nominal from the LCD-display.
6. Over-range: If the instrument only display one „1“ in the M. S. D.
the input signal is too strong, and a higher range should be
selected.
Standard Reference Table for Illumination
School precision experiment, Blackboard,
drawing office, sewing maschine,
precision drawing 300 ... 1500
Store room, corridor, stair-
cases, washbasin stand 70 ... 300
Fireescape 50 ... 70
Classroom, teaching Staff
office, Gymnasium, reading
room, Restaurant, Indoor
Gymnasium 150 ... 700
Car Lane, Passage 70 ... 150
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