You could do the very same thing with stainless hobby tubing. Not so easy
to close up the end however. Mind you, you could just glue the sensor into
the end of the tube with epoxy if that would be ok.
On Fri, Nov 7, 2008 at 12:22, Mike Zimmerman <[EMAIL PROTECTED]> wrote:
> Doug,
>
> Copper tube would be unsatisfactory for this project because they will be
> used in fishtanks.
> The copper can leech killing invertebrates in the tank. I was thinking an
> RTV silicone or some
> type of epoxy. I would assume each covering would change the temperature
> readings and would
> have to be calibrated for.
>
> Mike
>
>
> ----- Original Message -----
> From: "Doug Collinge" <[EMAIL PROTECTED]>
> To: [email protected]
> Sent: Friday, November 7, 2008 3:20:14 PM (GMT-0500) Auto-Detected
> Subject: Re: [Owfs-developers] DS18S20 to get water temperature
>
> I built several probes for measuring the temperature of hot water. They
> are made of copper refrigeration tube, closed at one end by sawing a cross
> in it, folding over, and soldering. I wired up a sensor to some telephone
> cable and stuck it into the tube with some heat sink gunk, then closed the
> whole thing with some special heatshrink tubing that has an internal layer
> that melts to make a great seal. Very successful probes but a fairly high
> thermal mass. The copper tube goes into a fitting made out of a compression
> union cut in half with the brass compression ring replaced with an o-ring.
> Works very well - couldn't be better, in fact.
>
> I made some cold water probes just by putting the same heatshrink right
> over the wire and sensor, leaving the sensor package sticking out a bit.
> Also very successful and much less thermal mass.
>
> On Fri, Nov 7, 2008 at 11:56, Donald J. Organ IV <[EMAIL PROTECTED]>wrote:
>
>> Has anyone created a water temperature probe using the DS18S20?? I am
>> assuming in order to do this I will need to encase it in some type of epoxy
>> that will not effect the temperature readings.
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win great
>> prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the
>> world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> Owfs-developers mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>>
>>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes Grand prize is a trip for two to an Open Source event anywhere in the
> world http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________ Owfs-developers mailing
> list [email protected]
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Owfs-developers mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
>
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Owfs-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/owfs-developers
