n) Lighting Measurement
The lighting measurement is used to verify the light conditions in living and work rooks, etc. The
light sensor includes a spectral filter that only lets through visible light for measurement
The lighting sensor is placed at the centre top (15). During measurement, the measuring device
should be aligned at a right angle to the light source.
Do not look into any bright light sources. This may lead to visual impairment. Keep
sufficient distance between the DMM and hot sources of light.
Proceed as follows for the measurement:
• The measuring leads are not required.
• Turn the DMM on and select measuring function “Lux”.
• Align the DMM with the light sensor (15) towards the
light source.
• The measuring value is shown on the main display.
When only the middle display segment shows “1”, the
measuring range was exceeded. Switch to the next
measuring function “Lux x10” with the dial switch. The
indicated measured value now has to be multiplied
by 10.
• Switch off DMM after measuring.
The included table shows the recommended
lighting strengths according to the indications
of the international commission for lighting.
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