Here it is:
https://vaquums.eu/sensor-db/tests/life-vaquums_PMfieldtest.pdf/view
didn’t have the time to do a deep dive, but might be of interest!
Author is on twitter also:
1 Like
Interesting article.
Another comparative study carried out by professionals from the Finnish Meteorological Institute, Helsinki (Finland) and the Institute of Advanced Architecture of Catalonia, Barcelona (Spain):
Before installing my station, I was comparing PM-2.5 measurements of the Nova SDS011 with a Xiaomi Mijia indoor air quality meter( https://cutt.ly/NkaHMgN ) that I think has good measurements because I compared it right next to an official station and there was very little difference. I am observing that the SDS011 gives lower values than Xiaomi:
SDS011/xiaomi
7/15
19/25
3.5 / 7
2.8 / 6
6.5 / 13.3
5.4 / 7
-Measures abroad compared to 2 official stations located at 3 km (sS) and another at 4 km (sF)
SDS011 / xiaomi / sS / sF
7/10/14/11
23/30/28/24
4.5 / 6/15/14
Of course, they are values that are within the precision range indicated by the manufacturer (+/- 10ng).
Currently, I continue to observe that it gives lower measurements than Xiaomi and the 2 official stations, but it should be noted that these 2 are in an urban area and my meter is a more isolated place surrounded by countryside (Sensor #56698)
Regards from Asturias(Spain)
Some questions:
- What kind of housing was used? (results may vary even between calibrated sensors related to the position in a housing)
- Were the SDS011 running all the time over 401 days (this would have been outside the specs)