The airborne nature of Sars-Cov-2 has highlighted the need for good ventilation within indoor spaces. Good ventilation lessens the concentration of airborne viral droplets by preventing their build-up as infected occupants respire. CO2 levels can be used as a proxy for the quality of ventilation of the space. As occupants respire CO2 is expelled and will also build up if the space is not well ventilated. Outdoor air (“fresh air”) has approximately 410 ppm of CO2.

Please note that CO2 levels in an indoor space is an indicator of ventilation quality but not of air quality as other pollutants exist such as particulate matter and gasses such as nitrogen dioxide which have no correlation with the level of CO2.

This work assumes that each space contains a CO2 sensor linked to the BMS. We will then fit and associate a QR code for that sensor in that space.

The BMS is linked to the Digital Building Platform and as such will have the up-to-date sensor readings from the CO2 sensors.

When you enter a space

When an occupant enters a room they can simply scan the QR code on the sensor using the CovidControl App.

Scanning the sensor provides access to the rooms ventilation data displaying the space's temperature, humidity and CO2 level (ventilation).

The interpretation of the data is colour coded for ease of use and configurable in the platform.


Room Status

The app will provide a colour coded interpretation of the data. A ventilation warning results if levels of CO2 are too high due to insufficient ventilation of the space.

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