HIapple8 wrote:Great work and a nice and neat design.
I am working on something similar using your design and have a couple of questions.
What is the purpose of painting the inside of the dishes, I assume to absorb heat away from the sensor?
How effective was the screen without the fan and with the fan.
Is the fan at the bottom blowing up or at the top drawing up. The fan is not shown on the original plan.
The only reason i painted the insides matt black was because the met office now seem to recommend that the insides are black
it is supposed to absorb accumulated heat better
not sure it makes a great deal of difference but I am getting excellent results
Have a look at this link
http://www.advantagein.com/instrumentshelter/
the small fan did not last long got a bit damp and it gave up
Think a 12v PC fan would be a lot better
a fan would need draw air in the bottom and push it out of the top