Duct air quality sensor LK+ active

CO2VOCrelative humidity

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 : Passive, Active, 0..5 V, 0..10 V, 4..20 mA, Switch contact • Configuration : USEapp, uConfig, jumper, 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 : 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 • 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