After some months of working the sensor started to give me unrealistic values.
I’ve decided to open the box and clean the inside, there was a dead ant and some dust.
Unfortunately the metallic plate that covers the receiver of the sensor PPD42NS was damaged by the rust, i’ve decided to remove the rust and paint the metallic plate with some spray paint.
The Shinyei PPD42NS needed to be recalibrated but all the components were perfectly working and now the sensor is working again!
