电容式水位传感器及其在地下水动态监测中的应用

CAPACITIVE WATER LEVEL TRANSDUCER AND ITS APPLICATION TO DYNAMICALLY MONITORING UNDERGROUND WATER

ＳＷＪ－１型精密水位仪是自动测量水位变化的数字化仪器，它是依据电容传感器电容量的变化与液位的变化量呈良好的线性关系的原理，采用以聚四氟乙烯作绝缘介质的绳式电容传感器，并应用现代微电子技术的一些新成就设计而成，具有结构合理、动态范围大、响应快、稳定可靠、使用范围广等特点。可用于江河、湖泊、水库等水位的动态观测，亦可用于高温泉水的水位测量，尤适合于小井孔及水位埋深超过数百米的深井的水位变化测量；

The SWJ-1 precision fluviograph is a digital instrument for automatically measuring fluctuations of water level. It is based on a good linear relationship between the capacitive variation of the capacitive transducer and the variation of water level. Fluon is used as insulation medium of rope-type capacitive transducer. In addition. some new achievements of modern microelectricity are applied to the instrument which has reasonable structure, large dynamic range, sensitive response, stablity, reliability and wide use. It can be utilized not only in dynamically monitoring water level of river, lake and reservoir,but also in measuring water level of hot spring with high temperature and of small well.It is applicable to those wells even their water level are hundreds meters deep under the ground.