Self-calibrating sensor with microprocessor control for measuring carbon dioxide content 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 content in the air is measured by means of a non-dispersive infrared analyser (NDIR).