About Us | Help Videos | Contact Us | Subscriptions

Soil Science Society of America Journal Abstract -

Solid State Circuitry to Activate Event Recorders Used with Drop-Counters1


This article in SSSAJ

  1. Vol. 34 No. 2, p. 361-362
    Received: Oct 31, 1969
    Accepted: Nov 11, 1969

Request Permissions

  1. Paul W. Unger and
  2. G. M. Roberson2



A drop-counting apparatus is used to determine soil moisture flow rates. A drop of water (soil solution) extracted from soil falls between two electrodes of the drop counter and initiates a series of events in the circuitry that activates the relay coil of the event recorder. The chart is marked at the time the drop passes between the electrodes.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America