A first attempt at a Stephenson screen for the outdoor temperature sensor. It is just a section of PVC pipe with a cowl on it to keep the rain (mostly) out, with a thinner pipe suspended on the inside, with the sensor suspended within that, near the lower end. The idea being that the inner pipe won’t see direct sunlight, and air between the pipes heated by the sun on the outer pipe will vent up and out, drawing fresh air in the bottom.
I’m currently testing it in parallel with the sensor at the back of the house (which gets badly sun-affected in the mid morning).
