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Resistor which reacts to moisture in soil or water.

  1. Feb 27, 2012 #1
    my friend and i are doing a DP lab, we are trying to find a resister which reacts to water/ moisture in soil. a resistor that is directly proportional to the moisture in the soil

    thank you.
     
  2. jcsd
  3. Feb 28, 2012 #2

    Andy Resnick

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    Could the soil itself be a resistive element?

    http://www.ictinternational.com.au/appnotes/ICT227.htm [Broken]
     
    Last edited by a moderator: May 5, 2017
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