Re: Conductivity Sensor
- From: bill.sloman@xxxxxxxx
- Date: 25 Jun 2005 16:31:15 -0700
Joerg wrote:
> Hello Luhan,
>
> > I'm constructing a Hydroponics system, and need to monitor the
> > conductivity of the nutrient solution.
> >
> > Any suggestions on what to use for the sensors for stable long-term
> > readings?
>
> I believe corrosion resistance is really important. Titanium is one of
> the materials used. An example:
>
> http://omega.com/manuals/manualpdf/M3696.pdf
Platinum is traditional, and graphite has its devotees.
One of platinum's advantages is that it has much the same coefficient
of thermal expansion as soft soda glass, which can be handy.
-------
Bill Sloman, Nijmegen
.
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