> At 05:23 PM 10/12/01 -0700, you wrote:
> >I'd like to build a TDS meter using a PIC. Could someone please tell me
> >where I can find out some inexpensive conductivity sensors for this project?
> >Thanks for your help.
> >
> >Peter
>
> Use two rods of an inert metal a fixed distance apart and drive with a 1000
> Hz AC signal (square or sine or triangle). Calibrate using salt water.
>
> Commercial meters use stainless steel electrodes or fancier platinized
> electrodes.
>
> ================================================================
> Robert A. LaBudde, PhD, PAS, Dpl. ACAFS  e-mail: ralKILLspamlcfltd.com
> Least Cost Formulations, Ltd.            URL: http://lcfltd.com/
> 824 Timberlake Drive                     Tel: 757-467-0954
> Virginia Beach, VA 23464-3239            Fax: 757-467-2947
>
> "Vere scire est per causas scire"
> ================================================================
>
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>
>
>

> Hz AC signal (square or sine or triangle). Calibrate using salt water.
>
> Commercial meters use stainless steel electrodes or fancier platinized
> electrodes.
>
> ================================================================
> Robert A. LaBudde, PhD, PAS, Dpl. ACAFS  e-mail: @spam@ralKILLspamlcfltd.com
> Least Cost Formulations, Ltd.            URL: http://lcfltd.com/
> 824 Timberlake Drive                     Tel: 757-467-0954
> Virginia Beach, VA 23464-3239            Fax: 757-467-2947
>
> "Vere scire est per causas scire"
> ================================================================
>
> --
> http://www.piclist.com hint: To leave the PICList
> KILLspampiclist-unsubscribe-requestKILLspammitvma.mit.edu
>
>
>