LDF+

The brightness sensor for ceiling installations detects indoor and outdoor light levels in living rooms, offices or at workplaces depending on the type of prism. The sensor is adapted to the spectral sensitivity of the human eye and serves together with control systems for an on-demand light or sun protection control. The remote sensor is connected to the enclosure via conventional RJ45 cables, making it easy to install in hardly accessible places. If two sensors are used, the individual values, the mean, minimum or maximum value can be provided through both output signals (configurable via Thermokon USEapp).

Measuring valuesluminosity
Output voltage1x/2x 0..10 V or 0..5 V (adjustable via jumper; live-zero configuration via Thermokon USEapp), min. load 10 kΩ
Output ampere1x/2x 4..20 mA, max. load 500 Ω
Output switch contactRelay: 2x floating contact NO for 24 V ~ or 24 V = / 3 A, optional
Network technologyRS485 BACnet (MS/TP), LON FT (free topology), RS485 Modbus
Power supply15..35 V = or 19..29 V ~ SELV, A: 15..35 V = SELV
Power consumptiontyp. 0,6 W (24 V =) | 1,5 VA (24 V ~), A: max. 20 mA (24 V =), AA: max. 40 mA (24 V =)
Measuring range light0..200 Lux | 0..1000 Lux | 0..2 kLux | 0..10 kLux | 0..20 kLux | 0..50 kLux, selectable at the device
Accuracy Light±5% of measuring range, calibration via Thermokon USEapp
SensorAmbient light sensor with precise optical filtering appropriate to the human eye
Prismacrylic glass clear, straight, diagonal
Enclosureenclosure USE-M, PC, pure white
ProtectionIP30 according to EN 60529
Cable entryFlextherm M20 for wire Ø=4,5..9 mm, Relay/BUS: M25 with fourfold cable entry for wire with max. Ø=7 mm, removable
Connection electricalremovable plug-in terminal, max. 2,5 mm², BUS terminal: removable plug-in terminal, max. 1,5 mm², sensor wire (patch cable) length=1,5 m (default), max. 10 m, plug RJ45
Ambient condition-25..+65 °C, max. 85% rH non-condensing
Delivery contentsincl. mounting base enclosure USE-M pure white
Contact

Contact us:


Thermokon Sensortechnik GmbH
Platanenweg 1
35756 Mittenaar
Tel.: +49 2778 6960-0


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