I’m building a particulate sensor using the Nova SDS011 PM sensor. It detects PM2.5 and PM 10. Papers like Potential and Limitations of the Low-Cost SDS011 Particle Sensor for Monitoring Urban Air Quality by Budde, et al., and “Field performance of a low-cost sensor in the monitoringof particulate matter in Santiago, Chile” by Tagle, et al., report that the sensor is more accurate for PM2.5 than PM10. I’ve also found this to be true of the two sensors that I have—comparing my readings against a professional PurpleAir sensor nearby, the PM2.5 readings I get are very similar to the PurpleAir sensor but the PM10 readings are often 1-8 µg/m^3 higher than the PurpleAir sensor gives. This makes sense: the Nova SDS011 seems to be a “good enough” small and inexpensive alternative to other more professional sensors.
However, does anyone know whether it’s possible to correct for the Nova SDS011’s inaccuracies?