I recently purchased some towers to see if I can get good
temperature and humidity reading for my backyard (as an alternative to the 5-in-1 temperature and humidity values).
I initially tried placing one in a citrus trees (keeps it's leaves in the Fall/Winter) and another on a post that has one side that's always in the shade.
I've read that the tree setup works well for some, but after a week I see that the tower in the tree won’t work for me. The humidity level is always high compared to surrounding area. Maybe it's due to transpiration? Maybe it's because I water the trees (drip irrigation that fills a basin at the base of the tree) once a week? I’m not entirely sure. Also, the temperature reading was always low when the sun was up. The shade did a good job of protecting the sensor from solar radiation, but there must be too much cover to get an accurate temperature reading.
The pillar works pretty well, but it seems to take some time to get “warm” in the morning and in the later part of the afternoon the temperature may be a few degrees too high. The humidity is a little off (high) maybe because of my watering the grass (it’s near my lawn). I did just adjust it’s location on the post to see if it makes a difference.
I’m moving my second tower from the tree to see if I can put it in a sunny location on my property and build up some type of inexpensive solar radiation shield – like a Stevenson Box. So far I’ve just used some things I have around the house that I tried with the 5-in-1 and hope to build up something after some experiments. One "failed" experiment today had the tower registering 123 degrees! More to come...