Fighting COVID-19 by monitoring air quality

With evidence of causality between air quality and SARS-COV-2 transmission likelihood, it is more important than ever to continuously monitor air quality indoors. Citymesh 0G offers an effective end-to-end air quality monitoring solution.


Air quality and SARS-CoV-2 transmission

The main way in which people are infected with SARS-CoV-2 (the virus that causes COVID-19) is through exposure to respiratory droplets carrying infectious virus. Respiratory droplets are produced during exhalation (e.g., breathing, speaking, singing, coughing, sneezing) and span a wide spectrum of sizes that may be divided into two basic categories based on how long they can remain suspended in the air:

  • Larger droplets: Some of which are visible and that fall out of the air rapidly within seconds to minutes while close to the source.
  • Smaller droplets (aerosols): Formed when small droplets dry very quickly in the air stream which can then remain suspended for many minutes to hours and travel far from the source on air currents.

There are several well-documented examples in which SARS-CoV-2 has been transmitted over long distances or times. These transmission events have typically involved the presence of an infectious person producing respiratory droplets for an extended time (>30 minutes to multiple hours) in an enclosed space. Enough virus was present in the space to cause infections in people who were more than 1,5 meters away or who passed through that space soon after the infectious person had left.

Thus, when it comes to airborne virus transmission, there are two main air quality indicators to watch out for:

  • CO2 concentration: a high level of CO2 (above 1.000 ppm) indicates that the ventilation of the room is inadequate with regard to the number of persons or the duration of occupancy which can result in a high concentration of virus in the air.
  • Humidity: a low level of relative humidity (below 40%) increases the rate of aerosol formation which in turn increases the likelihood of airborne transmission.

Source: U.S. Department of Health and Human Services / Centers for Disease control and Prevention

Co2 Room

Monitoring air quality

Citymesh 0G provides an end-to-end air quality monitoring solution using cutting edge Sigfox 0G connectivity to help create a safer environment for people indoors. The solution includes air quality sensors, monitoring software and Sigfox 0G connectivity. It allows users to view real-time information on the quality of the air (CO2 level, humidity) in every room in a building and to be alerted of any deteriorated air quality incidents. These alerts can be used to define areas with a higher risk of contamination and where disinfection efforts should be focused or where ventilation should be increased.

Co2 Connected Air Wits

Additionally, the solution offers tailor made reports to visualize the evolution of air quality through time and accurately evaluate the impact of any measures taken to improve it.

Rapal Co2

Compatible with a wide range of sensors, the solution can also be used to monitor additional health parameters. For example, presence sensors make it possible to measure office occupancy and help maintain social distancing.

Citymesh 0G is proud of contributing to the battle against the COVID-19 pandemic.