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An inexpensive, portable meter for measuring soil moisture

Joseph J. O'Brien* and Steven F. Oberbauer

Dep. of Biological Sciences, Florida International Univ., University Park, Miami, FL 33199



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  		Fig. 1. Schematic diagram of the meter for the CS-615 probe. The pin numbers of the 7805 chip refer to (1) voltage in, (2) ground, and (3) voltage out.

 


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  		Fig. 2. Correlation between probe output measured with the CR10 data logger and the portable meter.

 




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