The sensor is designed for indoor carbon dioxide concentration measurement and respective air capacity regulation through the control output signal to the fan.
Air capacity control based on CO2 concentration is an efficient energy saving solution.
Design and compatibility
The sensor has two separate outputs: a normally opened dry relay contact and an analogue output 0…10 V (this output is adjustable for 2…10 V/0…20 mA/4…20 mA).
The relay output is used to turn the fan on/off depending on indoor CO2 – concentration and the analogue output is used for smooth fan speed control for a fan with EC-motor or a fan with extra speed controller with 0-10 V input, refer to RS…TA or VFED.
In case of smooth fan speed control the fan speed varies proportionally to carbon dioxide emissions.
The relay and analogue outputs make the sensor compatible with any ventilation system.
The integrated self-calibration system ensures reliable sensor operation during the sensor service life.