LK+ CO2+VOC
Duct air quality sensor for detection of CO2, VOC, optional temperature and Humidity. Designed for duct mounted applications with up to 4 0..10 V outputs. Replaces LK-SX CO2+VOC in the newly developed enclosure USE-M.
| Measuring values | CO2, VOC, temperature + humidity (depending on the device), each output can be set to get a variable mix of CO2 and VOC by configuration |
|---|---|
| Output voltage | 2x/3x/4x 0..10 V or 0..5 V (live-zero configuration via Thermokon USEapp) |
| Output Amp | AA: 2x 4..20 mA |
| Output switch contact | Relay: 2x floating contact NO for 24 V ~ or 24 V = / 3 A, (optional) |
| Network technology | RS485 Modbus |
| Power supply | 15..35 V = or 19..29 V ~ |
| Power consumption | max. 2,5 W (24 V =) | 4,3 VA (24 V ~) |
| Measuring range temp. | -40..+60 | 0..+50 | -20..+80 | -15..+35, default setting: 0..+50 °C, optionally configured via Thermokon USEapp |
| Measuring range humidity | 0..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 configured via Thermokon USEapp |
| Measuring range CO2 | 0..2000 ppm, 0..5000 ppm (optionally configured via Thermokon USEapp) |
| Accuracy temperature | ±1% of measuring range (typ. at 21 °C) |
| Accuracy humidity | ±2% between 10..90% rH (typ. at 21 °C) |
| Accuracy CO2 | ±50 ppm +3% of measured value (typ. at 25 °C) |
| Air speed | min. 0,3 m/s, max. 12 m/s |
| Calibration | self-calibration, CO2: Dual Channel |
| Sensor | VOC sensor (heated metal oxide semiconductor), CO2: NDIR (non-dispersive, infrared) |
| Display | LCD 29x35 mm with RGB backlight, (optional) |
| Cable entry | M16 for wire max. Ø=8 mm, Relay/3xV/4xV: M20 for wire max. Ø=8 mm incl. seal insert for double cable entry for wire max Ø=6 mm, RS485 Modbus: M25 with fourfold cable entry for wire with max. Ø=7 mm, removable |
| Connection electrical | removable plug-in terminal, max. 2,5 mm², RS485 Modbus terminal: removable plug-in terminal, max. 1,5 mm² |
| Pipe | PA6, black, Ø=19,5 mm, length 180 mm, type VV|AA: length 150 mm |
| Filter | stainless steel wire mesh |
| Enclosure | enclosure USE-M, PC, pure white, LCD: cover PC, transparent, with removable cable entry |
| Protection | IP65 according to EN 60529 |
| Ambient condition | 0..+50 °C, max. 85% rH short term condensation |
| Mounting | installation is also possible using mounting base |
| Delivery contents | MF20 flange included |
| 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 ...) |