Portable Particulate Matter Monitor
There are two ways for measuring air quality. The first focuses on the presence of specific gases like CO2, CO, NO2, NOx, O3, SO2 and VOC. The second is based on concentration of particulate matter, or dust in plain English.
This project monitors the concentration of PM10, or particle matter of less than 10 μm, and displays a colour accordingly.
The colour of the LED is set according to PM10 concentration in µg/m³. It is based on the European index Citeair.
Although the sensor is capable of reading PM2.5 and PM1.0 , I haven't found the corresponding tables to define the air quality.
Posted: 18 Jan 2021