Are air filters necessary on Pitot, static or TE lines?

Interesting. Thanks Mike. What kind of water filter are you using? I wonder if really fine filtration (osmotic, etc) would have any negative effect on the rate of change of air pressure and thus affect instrument reading?

It was actually a paper motorbike fuel filter. The idea that the paper
would absorb any water. I did several cloud climbs post installation
without any issues. Sadly, I no longer own the glider.




At 13:10 12 December 2018, Pete wrote:
Interesting. Thanks Mike. What kind of water filter are you using? I
wonder
if really fine filtration (osmotic, etc) would have any negative effect
on
the rate of change of air pressure and thus affect instrument reading?

Some are dust/dirt/water filters. In general, the bigger the better so a dirt load is minimal to flow. Keep in mind, some use them to keep out bugs of various kinds.

Also, some are "gust filters" (online sources can define way better than I....). The basic purpose is to limit big changes in pressure in the downstream tubing......thus "gust filters".
You may have a dirt filter as well as a gust filter in the same tubing hose.