Hi all. Just reading the notes about an electronic station, and was a bit surprised to notice that the Barometer should always be indoors. Why?
I would have assumed the better logical place would be outside, free of any false pressures caused by say central heating?
Woody
The difference in pressure between indoors and outdoors is negligible, if any at all. So it makes sense to keep it out of the elements 
The only way a central heating system could affect it is if it pressurised the house and I’m not sure I’d really want to be in a house heated that way!
The sensor may also be calibrated/accurate over a fairly narrow temperature range and the inside temperature is likely to be more stable than the outside temp.
Interesting, I have always wondered that as well. Like when, for example a door is shut at the same time a reading is taken. Not very likely I guess and the temperature stability makes sense.
Trevor
Chris, with my girlfriend, beleive me it’s a pressurised house! :lol:
Thank you both very much for your replies
woody
Wait until you are married. You may need to use an offset then! 
US style forced air heating, which often only has a central return, must pressurize the house, or at least some rooms in the house, to some extent. I’ve looked but haven’t found an estimate of the actual effect though…
[quote author=nikoshepherd
when i built a electronic barometer with a electronics/computer whiz friend, before electronic weather stations became mass market, we had it really high resolution and polled the data every 0.1 seconds or so…and closing and opening the door to the room fast and hard we could get blips on a chart of the barometer reading alright!
I should rephrase that, “generate pressure differentials within the house”.