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Sensors 2013, 13(2), 1692-1705; doi:10.3390/s130201692

A Sensor for the Measurement of the Moisture of Undisturbed Soil Samples

*  and
Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
* Author to whom correspondence should be addressed.
Received: 25 November 2012 / Revised: 10 January 2013 / Accepted: 15 January 2013 / Published: 29 January 2013
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This paper presents a very accurate sensor for the measurement of the moisture of undisturbed soil samples. The sensor relies on accurate estimation of the permittivity which is performed independently of the soil type, and a subsequent calibration. The sensor is designed as an upgrade of the conventional soil sampling equipment used in agriculture—the Kopecky cylinder. The detailed description of the device is given, and the method for determining soil moisture is explained in detail. Soil moisture of unknown test samples was measured with an absolute error below 0.0057 g/g, which is only 2.24% of the full scale output, illustrating the high accuracy of the sensor.
Keywords: soil moisture sensor; sensor modeling; permittivity measurement soil moisture sensor; sensor modeling; permittivity measurement
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kitić, G.; Crnojević-Bengin, V. A Sensor for the Measurement of the Moisture of Undisturbed Soil Samples. Sensors 2013, 13, 1692-1705.

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