阐述了超声波液位计的测量原理，给出了实用的硬件电路与软件设计方法。
This paper expounds the measuring principle of ultrasonic liquid gauge, its practical hardware circuit and software design method.
介绍了液位检测仪表，并阐述在污泥处理站中采用超声波液位计和液位调节器实现液位自动控制的方法。
The paper introduces the level instruments and describes the realization of the level automatic control by means of ultrasonic level meter and level regulator in sludge treatment engineering.
用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；
Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections , then the computer calculated average water level, gradient of water table and discharge;
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