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- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality & Flow
- Modbus | Wireless Modbus
- PowerIO®
- EtherCAT P
- Accessory
Description
Outdoor light intensity sensor
PHOTASGARD® AHKF
The PHOTASGARD® AHKF light intensity or twilight sensor device supports six switchable measuring ranges (six devices in one) and measures the luminous intensity. It is used to control luminaries, lighting systems, Venetian and canvas blinds, etc., and to monitor lighting conditions at workplaces, in greenhouses, storage halls, workshops, corridors, outdoor areas, industrial halls and offices as well as in residential and business facilities. Further applications also include daylight-dependant constant light control, light intensity monitoring, twilight detection an sushade equipment control to avoid undesired heating-up of rooms.
As a multi-functional device, it minimises your variety of types and stock keeping while covering a greater range of universal applications.
As a multi-functional device, it minimises your variety of types and stock keeping while covering a greater range of universal applications.
The sensor is specifically adapted to the sensitivity of the human eye. Its greatest sensitivity is in the range between 350 nm and 820 nm. Therefore, with its special filter, the sensor is ideally suited to exposure measurement of daylight and/or for measuring artificial light of high colour temperature (similar to sunlight).
Technical details
Power consumption
< 1 W at 24 V DC; < 2 VA at 24 V AC
Voltage supply
15...36 V DC
depending on working resistance, residual ripple stabilised ± 0.3 V
depending on working resistance, residual ripple stabilised ± 0.3 V
Working resistance
Ra (ohm) = (Ub -14 V)/ 0.02 A for I variant
Deviation, humidity
typically < 5 % of final value
Sensor
light sensor
Ambient temperature
–30...+70 °C
Electrical connection
0.14 - 1.5 mm²
via terminal screws on circuit board
via terminal screws on circuit board
Housing dimensions
72 x 64 x 43.3 mm (Tyr 1 with Display)
Cable gland
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
max. inner diameter 10.4 mm
Dimensions
72 x 64 x 43.3 mm (Tyr 1 with Display)
Installation
on-wall
Output
4...20 mA (2- or 3-wire connection)
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Measuring ranges
multi-range switching (via DIP switches)
with 6 switchable measuring ranges
0...500 Lux/ 1 kLux/ 2 kLux/ 5 kLux/ 20 kLux/ 60 kLux
(other individual ranges optional)
with 6 switchable measuring ranges
0...500 Lux/ 1 kLux/ 2 kLux/ 5 kLux/ 20 kLux/ 60 kLux
(other individual ranges optional)
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
M12 connector according to DIN EN 61076-2-101 (optional on request)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU