Lightmeter LM10
6. Measurement
6.1. Preparation for measurement
Insert the measuring probe, required for measuring, in the sensor connector of Lightmeter LM10.
The measuring probe can also be connected to LM10 via 80 cm long connecting cable. Select the
corresponding measurement function via the
Selection
button.
The influences of other light sources should be avoided if a single lamp is to be measured. When
measuring the compact fluorescent lights (energy saving lamps), it must be taken into account that
they attain their full light intensity after few minutes.
6.2. Measurement of the visible spectrum with the measuring probe VL10
The measuring probe VL10 provided with the Lightmeter LM10
combines the measurement of the illumination intensity E in
Lux, the flicker rate in % and the flicker frequency up to 400
kHz using the quick precision amplifier.
The maximum values (peak hold) of illumination intensity and
flicker rate can be displayed using the
Selection
button. The
maximum values can be reset with the
Record
button.
The measured spectrum covers the visible range from 480 nm
to 660 nm.
The spectral sensitivity V(λ) of the measuring probe is adjusted
to that of the human eye.
Spectral sensitivity of the measuring probe VL10
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