52
Proceed as follows for the measurement:
-
The measuring leads are not required.
-
Turn the DMM on and select measuring function “dBC”.
-
Align the DMM with the measuring aperture (16) towards
the sound source. Min. distance 1 m.
-
The measuring value is shown on the main display.
-
Switch off DMM after measuring.
Strong wind (> 10 m/s) may negatively influ-
ence the measuring result.
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 func-
tion “Lux x10” with the dial switch. The indicated measured
value now has to be multiplied by 10.
-
Switch off DMM after measuring.
