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Room Sensors Climate+Air Quality

FT-RDF18+

Ceiling sensor for measuring relative humidity and temperature in rooms. The ideal solution for an inconspicuous, architectural integration into ceiling slabs or hollow walls. Especially designed for use in museums or showrooms. The precise measurements provided to a BMS system contribute to a comfortable room climate and prevent mold formation.

Application/type Ceiling sensor, Room sensor
Purpose Measure values
Measured values temperature, relative humidity, absolute humidity, enthalpy, dew point
Interface RS485 Modbus, RS485 BACnet, LON FT, Active, 0..5 V, 0..10 V, 4..20 mA, Switch contact
Configuration USEapp, uConfig, BUS, jumper, DIP switches, (depending on type)
Output voltage 2x 0..10 V or 0..5 V, adjustable via jumper, live-zero configuration via app or uConfig, min. load 5 kΩ, min. load 10 kΩ
Output current 2x 4..20 mA, max. load 500 Ω
Output switch contact 2x floating contact NO for 24 V ~ or 24 V = / 3 A
Network technology RS485 Modbus, RS485 BACnet (MS/TP), LON FT (free topology)
Data transmission RTU, half-duplex, baud rate 9.600, 19.200, 38.400 or 57.600, parity: none (2 stop bits), even or odd (1 stop bit)
Operating range temperature (°C) -35..+70
Operating ranges temperature (°C) -35..+70, -20..+70
Output signal temperature scaling analogue output, 0..+50 °C (default setting), -20..+80 °C (default setting), selectable from 4 temperature ranges -40..+60 | 0..+50 | -20..+80 | -15..+35 °C, adjustable at the transducer, optionally configurable via app or uConfig
Operating range humidity max. 85% rH short term condensation
Accuracy temperature ±0,3 K (typ. at 21 °C), within default measuring range, potentiometer for offset adjustment, offset setting via app or uConfig
Measuring range humidity 0..100% rH non-condensing, 0..85 KJ/kg enthalpy, 0..50 | 0..80 g/m³ absolute humidity, 0..+50 | -20..+80 °C dew point, adjustable at the transducer, optionally configurable
Accuracy humidity ±2% between 10..90% rH (typ. at 21 °C), potentiometer for offset adjustment, offset setting via app or uConfig
Power supply 15..24 V = (±10%) SELV, 15..35 V = SELV, 24 V ~ (±10%) SELV, 19..29 V ~ SELV
Power consumption typ. 0,4 W (24 V =), typ. 2,5 W (24 V =), max. 1 W (24 V =), 0,8 VA (24 V ~), 4,3 VA (24 V ~)
Material in touch with media Sensor head, Ø=30 mm, ABS, white
Display LCD 29x35 mm, RGB backlight
Enclosure USE-S, impact- and shock-resistant enclosure with quick-release cover, PC, USE-M, impact- and shock-resistant enclosure with quick-release cover, PC
Colour pure white, transparent cover
Protection (IP) IP30, enclosure IP65, according to EN 60529
Connection removable cable entry flextherm M20 for wire Ø=4,5..9 mm, removable cable entry M25 with fourfold cable entry for wire with max. Ø=7 mm, removable plug-in terminal, max. 2,5 mm², BUS max. 1,5 mm²
Connection cable flat ribbon cable, for mounting 15 mm from the sensor head, separable by means of RJ12 socket and plug, black
Length connection wire (m) 3,15
Mounting facet mounting
Delivery content incl. mounting base enclosure USE-S pure white, incl. mounting base enclosure USE-M pure white, incl. mounting set (screws and accessories)
Packaging length (mm) 128
Packaging width (mm) 100
Packaging height (mm) 65
Packaging case packaging
Comparison list
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