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DEVELOPMENT OF SWY-Ⅱ WATER LEVEL METER

In order to make the installation, calibration, and maintenance of water level meter easy for earthquake monitoring staffs, we decided to upgrade the existing SWY Ⅰ water level meter to SWY Ⅱ water level meter, which not only retained the original good performance characteristics, but also absorbed the merits from other water level meters and the suggestions from the Fluid Research Group of China Earthquake Administration.At first, the development of the sensor by ourselves lays the foundation of self maintenance and follow up upgrading. Second, the processes of self examination and examination ensure the high precision of the sensors and also guarantees the interchangeable features of them. Moreover, the display with network interface board uses 32 bit high speed ARM920T as the core processor, which has WINCE Operation System built in. This design makes the low power consumption and the stable operation system possible. Besides, it is convenient for the in situ calibration and configuration with the new touch screen on the instrument. Finally, the long distance maintenance including remote software updating, queries of the work logs, power supply and signal can be achieved by the water level meters of new type.