|MadSci Network: Physics|
The short answer is " I don't Know " The longer answer: " What a great idea. Definitely worth experimenting with. I would recommend measuring the resistance by applying an AC voltage at constant amplitude. I recommend a frequency of 1 to 10MHz. Measure the current at peak voltage. ( AC prevents electrolysis of probes ) Measure the resulting samples and throw away the component below the water-borne sound frequencies of interest. This avoids long and short term changes in salinity. If you need more help, such as a block diagram or suggested electronics, send me another message. Gus S. Calabrese www.omegadogs.com
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