LK+ CO2+VOC LCD temp RS485 Modbus

Duct sensor temperature, CO2, VOC, CO2/VOC mix – RS485 Modbus, 0..5 V, 0..10 V

Application/type Duct sensor
Purpose Measure values
Measured values temperature, CO2, VOC, CO2/VOC mix
Interface RS485 Modbus, 0..5 V, 0..10 V
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
Sensor NDIR (non-dispersive, infrared)
Output voltage 2x 0..10 V or 0..5 V, adjustable via jumper, live-zero configuration via app or uConfig, min. load 10 kΩ
Network technology RS485 Modbus
Radio technology LoRaWAN® (868 MHz)
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
Operating ranges 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 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
Installation length (mm) 180
Enclosure USE-M, impact- and shock-resistant enclosure with quick-release cover, PC
Colour pure white
Protection (IP) IP65, according to EN 60529
Connection 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
Delivery content incl. mounting flange, incl. mounting set (screws and accessories)
Packaging length (mm) 87
Packaging width (mm) 87
Packaging height (mm) 250
Packaging case packaging
Device length (mm) 85
Device width (mm) 84
Device height (mm) 225
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