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Water Level Measurement using Semicylindrical Capacitance measurement Technique |
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| รหัสดีโอไอ | |
| Creator | 1. Supagorn katathikarnkul 2. Kanadit Chetpattananondh |
| Title | Water Level Measurement using Semicylindrical Capacitance measurement Technique |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2554 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 38 |
| Journal No. | 3 |
| Page no. | 179-186 |
| Keyword | water level measurement, semicylindrical capacitance measurement, modified bridge circuit |
| ISSN | 0125-8273 |
| Abstract | This paper presents the water level measurement technique using a semicylindrical capacitance measurement. The probe consists of a hollow PVC semicylinder made of covered with a semicylindrical aluminium foil. Capacitance of the probe is proportional to the change in water level and is inversely proportional to the distance of aluminium foil. The measured capacitance is in the range of picofarad (pF). The static and dynamic responses of the proposed sensor were tested using the modified bridge circuit. Results show that the measured voltage is in the range of millivolt (mV) and is proportional to the variation in waterlevel. In addition, the tested nonlinearity, repeatability, and time responses of the probe are in the range of 0.2 second. This technique can be efficiently used in real-time water level measurement. Moreover, it is low cost, easy to use, and portable |
