I have for some years monitored sea water temperature with DS1820s and
OWFS.
I have soldered the sensors to a twisted pair telephone wire and put
them into a short piece, ca 50 mm, of 12 mm of copper tubing. The tubes
have a 3 mm hole in the middle where I have injected normal RTV one
component acetoxy-polymerising silicone. After that I have let the
silicone skin to polymerise in air for a couple of days and then put
them into the sea.
The disadvantage of this seems to be the lifetime of the sensors, which
seems to be around a year and a half.
Now I have lost my third sensor (I have not done any post mortem) and
would like a better method to protect the DS1820. The method must
withstand ice.
Any tip is appreciated.
Håkan
<http://smeden.org/krypta/kryptera.html>
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