Fields pulled from PurpleAir sensor

dwhitemv · Post by **dwhitemv** » Tue Jul 12, 2022 12:12 am

Hello,

I have a PurpleAir PA-II connected to my Meteobridge.

I'd like to know what fields MB is pulling from the PurpleAir that end up as the airXX sensors. I know that MB exports the PM10/PM2.5/PM1.0 values, and they appear as air[012]pm in my setup, but it looks like MB is pulling Channel A only, and I can't quite tell which conversion it is using.

To properly apply the US EPA adjustments I need to get both Channel A and B PM2.5 values using the cf_1 conversion and the humidity from the PA's onboard sensor. I figured out how to get MB to export the humidity sensor, but I can't see how to get the particulate sensor values I need.

I know I can query this from purpleair's site, but their API is sometimes cranky and I'd like to avoid using it if possible.

Thanks for any help you can provide.