LK+ CO2+VOC

The maintenance-free, multifunctional duct air quality sensor measures CO2 content and mixed gas and additionally temperature and humidity (relative, absolute, enthalpy, dew point). The devices with relay output for a 2-point controller or a 2-stage 2-point controller and color-changing LCD display allow a wide range of applications. Depending on the model, the sensor can be individually configured via Thermokon USEapp. Tool-free opening, closing and wiring as well as removable cable entries ensure quick and easy installation.

Measuring valuesCO2, VOC, temperature + humidity (depending on the device), each output can be set to get a variable mix of CO2 and VOC by configuration
Output voltage2..4x 0..10 V or 0..5 V (adjustable via jumper; live-zero configuration via Thermokon USEapp), min. load 10 kΩ
Output ampereAA: 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, AA: 15..35 V = SELV
Power consumptionmax. 2,5 W (24 V =) | 4,3 VA (24 V ~)
Measuring range temp.-40..+60 °C | 0..+50 °C | -20..+80 °C | -15..+35 °C, default setting: 0..+50 °C, optionally configurable via Thermokon USEapp
Measuring range humidity0..100% rH non-condensing, enthalpy: 0..85 KJ/kg, absolute humidity: 0..50 | 0..80 g/m³, dew point: 0..+50 | -20..+80 °C, optionally configurable via Thermokon USEapp
Measuring range CO20..2000 ppm, BUS: 0..5000 ppm
Accuracy temperature±0,5 K (typ. at 21 °C within default measuring range)
Accuracy humidity±2% between 10..90% rH (typ. at 21 °C)
Accuracy CO2±50 ppm +3% of measured value (typ. at 21 °C, 50% rH, 1015 hPa)
Calibrationself-calibration, CO2: Dual Channel
SensorVOC sensor (heated metal oxide semiconductor), CO2: NDIR (non-dispersive, infrared)
DisplayLCD 29x35 mm with RGB backlight, optional, indicating air quality by switching display color (traffic light function ‘TLF’)
Enclosureenclosure USE-M, PC, pure white, LCD: cover PC, transparent
ProtectionIP65 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
PipePA6, black, Ø=19,5 mm, length 180 mm, type VV|AA: length 150 mm
Filterstainless steel wire mesh
Ambient condition0..+50 °C, max. 85% rH short term condensation
Mountinginstallation is also possible using mounting base
Delivery contentsMF20 flange included
Notesmixed gas sensors detect gases and vapours which can be oxidised (burnt): Body odours, tobacco smoke, exhalations emitted by materials (furniture, carpets, paint, glue ...)
Contact

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


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