I think you may have a misunderstaning of the way these sensors work. One adapter can cover many sensors. As I said, you only need to the long run to a connection box near the water, then connect the sensors serially inside the box.

jerry

On 12/09/2013 01:35 AM, Håkan Elmqvist wrote:
Thanks all for your tips.
I will try some of them. Multiple sensors is a good solution but requires multiple adapters and cables.
H


2013-12-09 00:15, Michael Markstaller skrev:
On 08.12.2013 21:31, Håkan Elmqvist wrote:
I have for some years monitored sea water temperature with DS1820s and
OWFS.
I have some in saltwater for about 4y now without failure.
But to be able to give any meaningful answer: it is very important to
know the salinity and temperature of the water you measure - it's a big
diffenrence for so called "stainless steel" (or however its called like
V4A, ..) i.e wether the saltwater has 10 or 28°C!

But one thing ahead: copper gets eated by saltwater due to electrolysis
if the material in between is conducting - very quickly!

Define your needs, maybe a solution is near but not with materials you
find on land ;)

Michael


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