Random Thoughts - Weston 8681 etc

[EmmBeeGee]

My recently purchased PWS is temporarily sited atop a 150 cms wall - will raise it to 2 metres above the ridge of a barn at a later (read warmer) stage.

Having read posts on a number of threads, a few thoughts come to mind:

... how plumb should be the mast,

... the most stable mast diameter considering the possible free-standing extension to raise the sensors above turbulence,

... to what extent if any, is the aerodynamic interaction between the anemometer and the WDI particularly when the WDI
is directly down-wind of the spinning cups,

... would a model aircraft-style symetrical airfoil fin provide improved WDI tail "authority" without incurring a penalty,

... would small solar panels be able to power the Tx unit,

... if using for example, a 12v PC fan to aspirate a "screen" to the temperature/Tx unit, would a solar panel power it,

...

I have no doubt that at least one reader or contributer of this forum will have tried or have positive thoughts on my ramblings.

Mal

[hills]

Here's a few threads & comments to get you started



... how plumb should be the mast,

very plumb or it may affect your wind direction if you modify your WDI tail

... the most stable mast diameter considering the possible free-standing extension to raise the sensors above turbulence,

https://cumulus.hosiene.co.uk/viewtopic.php?f=16&t=2304

... to what extent if any, is the aerodynamic interaction between the anemometer and the WDI particularly when the WDI
is directly down-wind of the spinning cups,

I think this may have been discussed in the tail mod thread below, if not have a search as it has been discussed before.

... would a model aircraft-style symetrical airfoil fin provide improved WDI tail "authority" without incurring a penalty,

https://cumulus.hosiene.co.uk/viewtopic.php?f=13&t=1753

... would small solar panels be able to power the Tx unit,

https://cumulus.hosiene.co.uk/viewtopic.p ... 8&start=20

... if using for example, a 12v PC fan to aspirate a "screen" to the temperature/Tx unit, would a solar panel power it,

I used to have my 2v fan powered by a solar panel without a battery backup, but obvioulsy this only worked during sunny days. As I wanted it to work at night and cloudy days I converted to a permanently powered 12v fan. I thought about using a bigger 12v panel and a battery reserve, but it was much cheaper to just use mains power.

[Gina]

Yes, that pretty much covers it I too have abandoned the idea of solar power and run a cable from the house. 12v PC fans run fast enough on 5v and only need bell wire to conduct the small current they require. You might have to check the polarity though unless you can get cable with one wire marked (colour or a little ridge on the outside of the figure 8).