Used to measure static waterlevel in boreholes, wells and standpipes. Emits a steady tone and light signal.
采用小直径探针设计，用于测量钻井、井和水塔中欧那个静水水位。
2
How to get the drum water-levelsignal is analyzed. The analogue signal is used in this design. The water-levelsignal is fully determined and it makes the water-level protection exact and reliable.
分析了汽包水位信号的摄取方式，采用模拟信号的方式，对水位信号进行充分鉴别，使水位保护准确可靠。
3
The control circuit controls the water drainage mechanism using a relay and a contactor by the waterlevel detection signal.