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.
本产品采用氟利昂压缩机组，以F - 12作制冷剂，并装有压力继电器与温度调节器自动控制。
The tank contains compressor using freon F-12 as refrigerant, and pressure sensor, and temperature regulator for automatic controlling.
软件编程方法采用顺序控制设计法，并根据此方法设计了压块机自动控制系统的梯形图。
As for the software design, the paper takes advantage of the sequence controlling design programming, and designs the ladders diagram of the automatic controlling system with this method.
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