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A weighing sensor (5), the stepper motor driving the digital servo valve and the coder (10) on the digital valve (1) are respectively connected with the PLC (7) by signal circuits.
所述的称重传感器(5)、驱动数字伺服阀的步进电机以及数字阀(1)上的编码器(10)分别通过信号线路与所述的PLC(7)连接。
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