In order to improve the power of function of metallurgy stock crane, the system of transducer drive based SIEMENS PLC was given in this paper.
为了提高冶金原料吊车的运行能力，本文给出了基于西门子PLC的变频器驱动系统。
The design of structure of ultrasonic transducer and circuit for signal disposing can realize dual air bubbles monitoring function.
设计了超声波换能器的结构和信号处理电路，能够实现二重气泡监测功能。
There are lots of function parameters in transducer, many parameter keeps initial value at leave factory in factual application.
变频器有许多功能参数，实际应用中，多数只要采用出厂设定值即可。
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