基于可编程序控制器（PLC）的水轮机调速器，受PLC内部高速计数器最高计数频率的限制，频率测量大多通过PLC外部单元来实现。

Owing to the limited frequency of the internal high-speed counter of PLC, the peripheral unit of PLC is used for PLC-based frequency measurement of hydraulic turbine governors.

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机器将能够饲料产品的产品包装线添加选项“集产品供给单元与输出传送带计数器”。

The machine will be able to feed the product to the product wrapping line with adding the option of "set number product feeding unit with counter" to output conveyor.

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我部主要生产制动单元、制动电阻、力矩电机控制器、变频器面板延长电缆、转速表、计数器。

I mainly produce braking unit, braking resistor, torque motor controller, inverter panel extension cables, tachometer, counters.

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