Tensiometer modification for diminishing errors due to the fluctuating inner water column
- Martin Thalheimer *
The fluctuation of the height of the water column inside tensiometers constitutes a source of systematic error in the measurement of soil water potential. The influence of the fluctuating water column can be strongly reduced by measuring pressure in a confined air space close to the tensiometer tip. A simple technique of inserting a lower air space connected to the pressure sensor is presented. Successful laboratory tests were performed on a tensiometer of 1-m length with an applied pressure range from 0 to −80 kPa.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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