Re: Good coating for condensation protection?

From: Bill Stock (Me7_at_Privacy.net)
Date: 12/30/04 

Date: Thu, 30 Dec 2004 15:27:19 -0500

"Nicholas O. Lindan" <see@sig.com> wrote in message
news:q1ZAd.3371$JC2.2047@newsread2.news.atl.earthlink.net...
> "Bill Stock" <Me7@Privacy.net> wrote
>
>> I've got a temperature sensor circuit which is subject to severe
>> condensation. What's a good protective coating? I was thinking of filling
>> the enclosure with silicone caulk, but I imagine some spray coating might
>> be
>> better?
>
> Is it possible to have just the sensor in the condensing atmosphere?

Yes, but the non condensing atmosphere is outside, so then I've got
snow/ice/critters to worry about. The sensor measures the temperature of an
ornamental pond (coverered) and controls a heater to prevent fishsicles.

> If not, then you will need a small 'Hoffman Enclosure' with a NEMA (I
> forget the #) rating.
>
> If you use epoxy you may want to use marine epoxy, that's the stuff
> they make boat hulls out of, available at boat shops. Also called
> 'West Epoxy'.
>
> --
> Nicholas O. Lindan, Cleveland, Ohio
> Consulting Engineer: Electronics; Informatics; Photonics.
> Remove spaces etc. to reply: n o lindan at net com dot com
> psst.. want to buy an f-stop timer? nolindan.com/da/fstop/
>