hello, from what do you deduce that it still detects high temperature values? do you have it in comparison with? it is by no means the second best performing screen in the world, in normal conditions (white) it takes those 06/07 tenths from a meteoschield pro or a metspec, or a Comet, making it black inside, should reduce this distance, maybe if you have some photos of your work... to better understand
Well the temperature increase always comes very shortly after the sun starts shining on the shield, especially notable when it's been cloudy for a long period before.As you can see on this picture the temperature increased from -0,4 to 1,8 within just a hour, 3 times faster than nearby stations including airport station.
For the whole march i have now compared my data to the airport and on average my stations reads -0,5c colder on cloudy days and 1,3c warmer on sunny days, i expect the reason for it to be colder on cloudy days comes from the compact structure of the davis 7714 which protects too much, while on sunny days the compactness makes it read higher values with too many inner parts warming up
There's nothing to question wether Davis 7714 is one of the best passive radiation shields out there, on this particular experiment it even had a t-max value 5c colder than a TFA radiation shield, even if that one is too cheap to almost count as a shield.