Field application demonstrates that the management level and economic efficiency of the screw pump production system would be improved by using the control chart.

现场应用表明，根据螺杆泵油井工况宏观控制图，可提高螺杆泵采油系统管理水平及经济效益。

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The system consists of feedwater pump control, adjusting valve level control, safety and alarm devices.

该系统包括给水泵控制、调节阀阀位控制以及安全保护和报警。

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Float switch according to the required water level changes, automatic control of pump start and stop, do not need special care.

浮球开关可以根据所需的水位变化，自动控制泵的启动与停止，不需专人看管。

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