A System for Recording Precipitation Height by the Use of Capacitor Plates
Keywords:
capacitor plates, measuring the precipitation height, recording data at any momentAbstract
Precipitation is one of the meteorological factors that plays a significant role in water development and other civil projects. The amount of precipitation is considerably crucial in estimating the amount of surface/underground water and runoff. It is also used in predicting the likelihood of flood with the purpose of taking necessary steps. Due to lack of a complete rain gauge station network in the entire world (especially in impassable areas which are out of regular access), it is not possible to accurately measure the amount of precipitation on the global scale. There are different methods for measuring precipitation, involving the volumetric, weight, or ultrasonic methods. Some of these measurement procedures, however, suffer from low measurement accuracy and high implementation costs. In the current study, aluminum capacitor plates were used to design an instrument for measuring precipitation height. In this instrument, capacitor plates were installed on the rain gauge tank. Data were collected in the campus of the Faculty of Agriculture, Razi University of Kermanshah. The capacitance was calibrated to precipitation height and changes in the capacitance in relation to time and precipitation height were recorded. Measurements conducted by the capacitance meter (VICTOR-6013) showed that the precipitation height had been measured with an accuracy of 0.1 mm. Furthermore, the measurement error of precipitation height of the instrument was 4.3.
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