I am currently working with the SEN55 sensor and am experiencing an issue where the PM1, PM2.5, PM4, and PM10 values are always returning the same readings, which seems incorrect. These values are supposed to vary based on the air quality, and it is unusual that they remain static, especially considering they have different scales.
For example, today’s expected values should be:
PM2.5: 95
PM10: 47
However, the readings I am receiving are always like:
I have worked on the SPS30, later the SEN55 and now working on the new SEN66. The output numbers can be very close after a longer time running. In my observations for the SEN55 the PM2.5, PM4,0 and PM10 numbers would often be the same. If you breath into the device, you should see a change.