On Wed, 06 Jul 2005 12:48:24 GMT, "Dave.C"
wrote:

I don't have the knowledge to help, Peter, but I am surprised with the
amount of moisture ingress problems you have had. I have had my Oregon
remote temp sensor for a few years now and apart from a couple of battery
changes I have had no problems at all. On occasions I have left it out in
the rain and it even sat in some water in the bottom of my home made
Stevenson's screen for several days once. It's always been exposed to the
air, although covered from above, at least. Perhaps I have just been lucky!


My Oregon sensor has been ok as well. It has an O-ring seal around the
electronics and the sensor head seems to be immune from moisture.

Try using a bit of silicone rubber compound to seal it if you are concerned.

As for the OP's concerns about reed switches, I would replace it with a
semiconductor device, like a hall effect sensor or inductive proximity sensor,
and if there are any concerns over interfacing to the PC input/output card, you
could always use the HED or IP sensor to drive a relay local to the PC.



Martin

Dave