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Thermokon · Air quality sensor
LK+ active
Duct air quality sensor for CO2, VOC, temperature and humidity, with voltage or current outputs and optional relay and LCD.
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Part number662468
Datasheet, PDF
- Quotes answered within 24 hours, no account needed
- DHL, under 15 kg £13.50 ex VAT
- Technical support from the people who commission it
Specification
Communication
- Connection
- Plug-in terminal up to 2.5 mm², relay up to 1.5 mm², M20 and M25 cable entries
Electrical
- Power supply
- 15 to 35 V DC or 19 to 29 V AC
- Power consumption
- Max. 2.5 W (24 V DC), 4.3 VA (24 V AC)
Environment
- Operating temperature
- 0 to +50 °C
- Humidity
- Max. 85% rH, short term condensation
- Protection
- IP65 IP rating
Performance
- Output signal
- 0 to 10 V or 0 to 5 V (min. load 10 kΩ), 4 to 20 mA (max. load 500 Ω), by model
- Measuring range
- CO2 0 to 2000 or 0 to 5000 ppm; humidity 0 to 100% rH; temperature 0 to +50 °C default
- Accuracy
- CO2 +/-50 ppm +3% of reading; humidity +/-2% rH (10 to 90% rH); temperature +/-0.5 K (typ. at 21 °C)
- Sensor element
- NDIR CO2 with dual channel self-calibration; heated metal oxide VOC
- Probe length
- 70, 100, 150 or 180 mm, 19.5 mm tube
Physical
- Housing material
- PC, USE-M enclosure
- Mounting
- Duct flange included; air speed 0.3 to 12 m/s
Part numbers
- 662024CO2, VOC, 2 voltage outputs
- 662031CO2, VOC, 2 current outputs
- 662062CO2, VOC, 2 voltage outputs and relay
- 662079CO2, VOC, 2 voltage outputs, LCD
- 662086CO2, VOC, 2 current outputs, LCD
- 662093CO2, VOC, 2 voltage outputs and relay, LCD
- 662130CO2, VOC, temperature, 3 voltage outputs
- 662147CO2, VOC, temperature, 3 voltage outputs, LCD
- 662154CO2, VOC, temperature, humidity, 4 voltage outputs
- 662161CO2, VOC, temperature, humidity, 4 voltage outputs, LCD
- 662253CO2, 1 voltage output
- 662260CO2, temperature, 2 voltage outputs
- 662277CO2, temperature, 2 current outputs
- 662307CO2, temperature, 2 voltage outputs and relay
- 662284CO2, temperature, 2 voltage outputs, LCD
- 662291CO2, temperature, 2 current outputs, LCD
- 662314CO2, temperature, 2 voltage outputs and relay, LCD
- 662321CO2, temperature, humidity, 3 voltage outputs
- 662338CO2, temperature, humidity, 3 voltage outputs, LCD
- 670418CO2, 1 voltage output, CO2 100 version
- 670432CO2, temperature, 2 voltage outputs, CO2 100 version
- 670449CO2, temperature, 2 current outputs, CO2 100 version
- 670456CO2, temperature, 2 voltage outputs and relay, CO2 100 version
- 670463CO2, temperature, 2 voltage outputs, LCD, CO2 100 version
- 670470CO2, temperature, 2 current outputs, LCD, CO2 100 version
- 670487CO2, temperature, 2 voltage outputs and relay, LCD, CO2 100 version
- 670494CO2, temperature, humidity, 3 voltage outputs, CO2 100 version
- 670500CO2, temperature, humidity, 3 voltage outputs, LCD, CO2 100 version
- 662413VOC, 1 voltage output
- 662437VOC, temperature, 2 voltage outputs
- 662444VOC, temperature, 2 current outputs
- 662475VOC, temperature, 2 voltage outputs and relay
- 662468VOC, temperature, 2 voltage outputs, LCD
- 662482VOC, temperature, 2 current outputs, LCD
- 662499VOC, temperature, 2 voltage outputs and relay, LCD
- 662505VOC, temperature, humidity, 3 voltage outputs
- 662529VOC, temperature, humidity, 3 voltage outputs, LCD
From the manufacturer's datasheet for LK+ active.
Overview
The LK+ is a maintenance-free duct sensor that measures CO2 or mixed gas (VOC), and optionally temperature and humidity. Humidity can be output as relative humidity, absolute humidity, enthalpy or dew point. It is made for demand controlled ventilation in ducts. Outputs are 0 to 10 V or 0 to 5 V, or 4 to 20 mA, from one to four depending on the model, and each can be set to a mix of CO2 and VOC. Some models add a two-stage relay output, and some have a colour LCD with a traffic light function. It is configured with the USEapp or uConfig, and installed with a hinged cover and tool-free wiring.