Hi Bob,
I have the Wplot32.exe already. Send me your plots ;-))
also send to [email protected]
Thanks,
Dan
Re: CS>PWT & its Limits
From: Robert Berger (view other messages by this author)
Date: Fri, 8 Aug 2003 13:25:54
Hi Dan,
With our posteriors exposed we find that when using a DC ohm meter it is
necessary to swish the electrodes in short rapid strokes to keep the reading
from climbing. Generally when measuring a resistance of a liquid or soil it is
done with an AC ohmmeter and preferably one running at 180 Hertz or faster.
The commercial units do measure conductivity to determine when the process is
finished. The generators will not start if the conductivity of the DW is above
a certain limit.
Are you enough of a computer "geek" so that if I sent you off line a program
Wplot32.exe that you would install it on the desk top, and then create a file
folder "My wplots" under "My documents" to store some files that I would send
to you? If you could I would like to send you some data plots of runs that I
have made so that you can see some of the strange things that go on with this
process. First off the conductance changes with time i.e. at the end of a run
it might be 75 uS/cm and24 hours later if might be 40 uS/cm. If you stop a
process for several minutes to wipe the electrodes then the current on restart
will be 20 to 30% lower. In fact just stopping for a minute and restarting
without doing anything and the current readings will drop.
"Ole Bob"
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