merged

Volumetric Water Content Measurement in Unsaturated Sand using
Arduino Water Sensor
Noor Amira Binti Sulaiman
Supervisor: Dr. Sunny Goh Eng Giap
Bachelor of Technology (Environment)
School of Ocean Engineering
Universiti Malaysia Terengganu
Arduino board is widely used in technology device nowadays. In this study, the Arduino
is used to control the sensor. The sensor measured the variation of voltage in response
to the changes of the volumetric water content in the sand. Two types of sensors, i.e.
uncoated and coated water sensors, were selected for comparison and the results
were correlated with volumetric water content. In addition, the volumetric water
content measurements were investigated. Hence, the results from the study would be
able to differentiate the effects of using different types of sensor and salinities. The
results showed both sensors could be correlated with the volumetric water content in
the sand. However, coated sensor generates a stable voltage than the uncoated
sensor in response the amount of water content in the sand. For saline water in the
sand, both sensors showed a significant variation in response to the amount salinity
in the sand.
54 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2019