[Weather] [personal] 1-wire humidity sensor for outdoor use?

[Jim Pace]

1-wire humidity sensor for outdoor use?I, too was using the AAG humidity sensor, in a hand-built shield and recently replaced it with a Hobby Boards kit sensor. I thought that the AAG sensor was a source of the problems I was having with the 1_Wire net. Now, I don't think there was anything wrong with it.
The Hobby Board sensor looked to me to be more vulnerable to wind driven rain splatter getting through the radiation shield openings so I built an inner shield for the board that surrounds three sides and top and bottom of the board. The open end faces away from the prevailing wind. So far, so good, but it's only been a few months.
Jim
http://ecapmiill.home.comcast.net
  ----- Original Message ----- 
  From: Nafis, Christopher A (GE, Research) 
  To: weather at buoy.com 
  Sent: Monday, November 27, 2006 6:58 PM
  Subject: [personal] [Weather] 1-wire humidity sensor for outdoor use?


  Hi, 

  I've been using the AAG TAI8540 Humidity sensor mounted in a Davis Radiation shield for an outside humidity/temperature sensor (AAG states "designed for indoor use"). I've coated the circuit board with liquid tape, but the honeywell sensor still seems to "die" after a year or so. 

  Hobby Boards also sells the HT3-R1-A Humidity / Temp sensor with a moisture resistant coating. 

  What are other folks using? Are you protecting the honeywell sensor with something? 
  I have a several weatherstations at local schools and this is a maintenance problem. 

  Any info appreciated, Chris 



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