Pengujian Sensor Kadar Air Tanah dengan Metode Konduktivitas Listrik pada Volume Pot Kalibrasi Berbeda

Abstract

Measurement of Soil Moisture can be done indirectly as the electrical conductivity method. The number of electrodes used in these methods are generally of two electrodes. Smaller volume of soil at the time of calibration allows the electric field is not the same as it reads the field so that the resistance will vary with the actual. Thus, necessary to test the consistency of the value of the sensor electrode configuration with two different soil volumes. Tests have been conducted on small and large pots with each soil volume 600 cm3 and 2100 cm3and has also been tested on five electrode configurations that are rarely used. The test results showed the two electrode configurations resistance to the moisture values on the two types of pots have a large difference in resistance values.Limitations on the volume of small pots are resulting in a higher resistance value than the big pot. While the five-electrode configuration provides resistance to water content values tend to be uniform both on big and small pots. So the use of five-electrode sensor configuration provides a more accurate value and results of the calibration process more able to represent field conditions.