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Duct Sensors Climate+Air Quality


The maintenance-free and multi-functional duct air quality sensor measures CO2, mixed gas (VOC), temperature and humidity (relative, absolute, enthalpy, dew point). Optional features, such as a relay output for a 2-point controller or a 2-stage 2-point controller, LCD and traffic light function allow for a wide range of applications. A hinged cover and tool-free wiring as well as removable cable entries ensure a quick and easy installation.

Application/type Duct sensor
Purpose Measure values
Measured values temperature, relative humidity, absolute humidity, enthalpy, dew point, CO2, VOC, CO2/VOC mix
Interface RS485 Modbus, RS485 BACnet, LON FT, Passive, Active, 0..5 V, 0..10 V, 4..20 mA, Switch contact
Configuration USEapp, uConfig, BUS, jumper, DIP switches, each output can be set to get a variable mix of CO2 and VOC by configuration via app or uConfig, (depending on type)
Sensor NDIR (non-dispersive, infrared)
Output voltage 0..10 V, 0..10 V or 0..5 V, 2x 0..10 V or 0..5 V, 3x 0..10 V or 0..5 V, 4x 0..10 V or 0..5 V, adjustable via jumper, live-zero configuration via app or uConfig, 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) 0..+50
Output signal temperature scaling analogue output, 0..+50 °C (default setting), selectable from 4 temperature ranges -40..+60 | 0..+50 | -20..+80 | -15..+35 °C, optionally configurable
Operating range humidity max. 85% rH short term condensation
Accuracy temperature ±0,5 K (typ. at 21 °C), within default measuring range, 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, optionally configurable
Accuracy humidity ±2% between 10..90% rH (typ. at 21 °C), offset setting via app or uConfig
Measuring range CO2 0..2000 ppm, 0..5000 ppm, optionally configurable
Accuracy CO2 ±50 ppm +3% of measured value (typ. at 21 °C, 50% rH, 1015 hPa), self-calibration Dual Channel
Measuring VOC (mixed gas) heated metal oxide semiconductor
Power supply 15..35 V = SELV, 19..29 V ~ SELV
Power consumption max. 2,5 W (24 V =), 4,3 VA (24 V ~)
Material in touch with media Pipe, Ø=19,5 mm, black, length 180 mm, length 150 mm, length 100 mm, length 70 mm, with filter stainless steel wire mesh, without filter
Installation length (mm) 70, 100, 150, 180
Display LCD 29x35 mm, RGB backlight, with traffic light function, threshold values configurable, optionally configurable via app or uConfig
Enclosure USE-M, impact- and shock-resistant enclosure with quick-release cover, PC
Colour pure white, transparent cover
Protection (IP) 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, relay max. 1,5 mm²
Delivery content incl. mounting flange, incl. mounting set (screws and accessories)
Packaging case packaging
Notes mixed gas sensors detect gases and vapours which can be oxidised (burnt): Body odours, tobacco smoke, exhalations emitted by materials (furniture, carpets, paint, glue ...), air speed 0,3..12 m/s
Comparison list


Item No.: 670418
222.90 EUR