Automatic Acquisition of Data from Tensiometers with Mercury Manometers
- O. Atteia and
- J. P. Dubois
Knowledge of soil matric potential gradient is essential to calculate water fluxes in soils. This gradient is generally measured with tensiometers. We present a new device for automatically measuring matric potential accurately and cheaply. The basic component is an inductive sensor that runs up and down the tensiometer's tubing. An endless screw and a stepping motor connected to an acquisition data box precisely control the vertical movement of the sensor. After 1 yr of testing, this apparatus has proved to be as accurate as the classic techniques.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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