G
HYGRASGARD
®
DHKF
Rev. Data - V15
The light-intensity sensor
PHOTASGARD
®
DHKF
with six switchable measuring ranges (six devices in one) for installation in suspended ceilings. The
connecting head is pluggable for quick and easy mounting. The measuring transducer is accommodated in a separate housing.
The sensor used was specifically adapted to the sensitivity of the human eye. Its greatest sensitivity is in the range of 400 nm to 700 nm. With its
special filter, the sensor is therefore ideally suited to exposure measurement of daylight and/or for measuring artificial light of high colour tempera-
ture (similar to sunlight).
It is used for daylight-dependent constant light control, to control luminaires, lighting systems, Venetian blinds and canvas blinds, and to control light
intensity and sun protection hoods to avoid unnecessary heating-up of rooms. It is used in green houses, storage halls, industrial halls, workshops,
corridors, residential and commercial buildings.
TECHNICAL DATA
Power supply:
24 V AC (± 20 %); 15...36 V DC for U variant
15...36 V DC for I variant,
depending on working resistance, residual ripple stabilised ± 0.3 V
Working resistance:
R
a
(ohm) = (U
b
-14 V) ⁄ 0.02 A for I variant
Load resistance:
R
L
> 5 kOhm for U variant
Power consumption:
< 1 W at 24 V DC; < 2 VA at 24 V AC
Sensor:
light sensor
Measuring ranges:
multi-range switching
(via DIP switches)
0...500 Lux ⁄ 1 kLux ⁄ 2 kLux ⁄ 5 kLux ⁄ 20 kLux ⁄ 60 kLux
(optional other individual measuring ranges, e. g. 100 kLux)
Output:
4...20 mA or 0 -10 V
Deviation:
typically
< 5 % of final value
Ambient temperature:
–30...+70 °C
Housing:
plastic, UV-resistant,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted ⁄ Phillips head combination),
colour traffic white (similar to RAL 9016)
Housing dimensions:
72 x 64 x 37.8 mm (Tyr 1)
Electrical connection:
2- or 3-wire (see connecting diagram),
0.14 - 1.5 mm², via terminal screws
Cable connection:
cable gland
, plastic
(M 16 x 1.5; with strain relief, exchangeable,
inner diameter 10.4 mm)
or
M12 connector
according to DIN EN 61076-2-101
(optional on request)
Connecting cable:
PVC, LiY Y, 4 x 0.14 mm²,
cable length (KL) = approx. 2 m
Connecting head:
made of plastic, material polycarbonate (PC), colour white,
pluggable
, Ø = approx. 35 mm, H = approx. 29 mm
Mounting (sensor):
in the suspended ceiling, ceiling cut-out Ø = 30 mm,
cover Ø = < 35 mm
Protection type:
IP 65
(according to EN 60 529) Housing
IP 30
(according to EN 60 529) Sensor in the built-in state
Protection class:
III (according to EN 60 730)
Standards:
CE conformity, electromagnetic compatibility according to
EN 61 326, EMC directive 2014 ⁄ 30 ⁄ EU
PHOTASGARD
®
DHKF
In-ceiling light intensity sensors
Type ⁄ WG01
Measuring Range
Light Intensity (adjustable)
Output
Light Intensity
Item No.
DHKF
DHK F I
0...500 Lux / 1 / 2 / 5 / 20 / 60 kLux
4 ... 20 mA
1601-6122-1000-000
DHK F U
0...500 Lux / 1 / 2 / 5 / 20 / 60 kLux
0 -10 V
1601-6121-1000-000
Extra charge:
Other individual measuring ranges optional, e. g. 100 kLux
on request
Optional:
Cable connection with
M12 connector
according to DIN EN 61076-2-101
on request
