S+S Regeltechnik PHOTASGARD RHKF-UP Operating Instructions, Mounting & Installation page 7

G
Photodiode
Photodiode
40° 30° 20° 10°
50°
60°
70°
80°
90°
100°
1.0 0.8 0.6
Characteristic curve showing the sensor's sensitivity
in function of the angle of incidence ϕ of light.
The sensor used in PHOTASGARD
greatest sensitivity is in the range of 350 nm to 820 nm. Therefore with its special filter the sensor is predestined for exposure measure ment
of daylight and ⁄ or for measuring artificial light of high colour temperature (similar to sunlight).
0°
1.0
0.8
0.6
0.4
0.2
0
0.4 0° 20° 40° 60° 80° 100° 120°
® light intensity sensors (photodiode) was specifically adapted to the sensitivity of the human eye. Its
PHOTASGARD ®
Photodiode
100%
Characteristic curve showing the sensor's
sensitivity in respect of the wavelength λ of light.
The broken line represents the light perception
of the human eye.
80%
60%
40%
20%
0%
400 600 800
PHOTASGARD ®
1000 1200nm