Self-calibrating sensor with microprocessor control for measuring carbon dioxide concentration in the air within the range from 0 to 2,000 million-1 (parts per million).
The sensor is mounted onto a wall or a mounting box inside the serviced space.
The unit is powered from a 24 V AC/DC low-current electric mains.
DESIGN
CO2 sensor has 2 analogue outputs: 0-10 V and 4-20 mA.
An analogue output provides for stepless fan speed control (requires an EC motor fan or an additional fan speed controller with input 0...10 V, for example, VFED).
With stepless control the fan speed is changed in proportion to carbon dioxide concentration changes.
The CO2 concentration in the air is measured by means of a non-dispersive infrared analyser (NDIR).