The performance measurement test on rain gauge of tipping bucket due to controlling of the water flow rate

The purpose of this research was to test the measurement performance especially the measurement repeatability of tipping bucket rain gauge by varying the water intensities. Water intensities were obtained by converting water (volume) flow rates that enter to the section or mouth area of the rain gauge. The study was conducted using an experiment method. The result showed that by changing the water flow rate between 24-100 ml/min three times, the water volume in the tipping bucket were (18.93±0.60), (17.89±0.92) and (17.80±0.60) ml/tip respectively.