Water-proofing thermisters

>When I asked for ways to put probes underwater to measure temperatures I
was >misunderstood.  
>What I meant was that I have used NTC Thermistors (temperature
>varient resistors).  My problem is how to seal them so that they 
>are waterproof.  I have used heat-shrink, but I can't really
>seal the very end of them.

    I would make two suggestions for water-proofing.
After the thermister has been soldered to the lead wire, coat it with either
epoxy or a thin layer of silicon sealant, both will stick to the wire

Doug Bardell
Garson, Ontario, Canada
Home Page:http://users.feldspar.com/~dallenb/Welcome.html