Re: Undergravel heating

• To: aquatic-plants at actwin_com
• Subject: Re: Undergravel heating
• From: Dennis Amor <Dennis.Amor at mailbox_uq.oz.au>
• Date: Mon, 06 Nov 95 22:34:56 -800

Hello again,


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.

George, I was going to use the LM34, but we decided that the Thermistors 
were cheaper and actually more accurate (depending on which you get).

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