S+S Regeltechnik HYGRASGARD DHKF I Notice D'instruction page 7

G
Light sensor
Light sensor
40° 30° 20° 10°
50°
60°
70°
80°
90°
100°
1.0 0.8 0.6 0.4
Characteristic curve showing the sensor's sensitivity
in function of the angle of incidence of light.
The sensor used in PHOTASGARD
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).
Connecting diagram
Output: 0 -10 V
-
230V AC
+
24V AC/DC
1 2 3 4
PHOTASGARD
0°
1.0
0.8
0.6
0.4
0.2
0
0° 20° 40° 60° 80° 100°
®
light intensity sensors was specifically adapted to the sensitivity of the human eye. Its greatest sensitivity
DHKF - U
3-Wire
-
PLC
+
PC
®
Light sensor
120%
100%
80%
60%
40%
20%
0%
300 400
Characteristic curve showing the sensor's
sensitivity in respect of the wavelength of light.
The broken line represents the light perception
of the human eye.
Connecting diagram
Output: 4 ... 20 mA
-
230V AC
+
24V DC
1 2 3 4
PHOTASGARD
SENSOR
CIE
500 600 700 800 900nm
(transmitter)
-
PLC
+
Working
resistance
®
DHKF - I
2-Wire