I am designing the data logger of a solar-powered automatic weather station that will be installed in farms. It's used to gather data from environmental sensors (wired) and send it to a host using the cellular network.
One of these sensors is a Solar Radiation sensor. Its sensitivity is 15uV. I am designing the analog front end and already filtered the mains 50 Hz that may be present due to nearby power transmission towers.
My question is:
What are the other external noise sources that are present in a farm that may interfere with my system?