本文叙述了阀门自动控制装置的工作原理、结构特点以及装置的优点。

In this article, the working mechanism, structure and advantages of the mechanical valve automatic control device were introduced.

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手操机构：自动控制在不正常情况下可以手动操作阀门的启闭。

HART institutions: automatic control under normal circumstances you can not manually open and close the valve.

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根据调节部位信号，自动控制阀门的开度，从而达到介质流量、压力和液位的调节。

According to regulate parts of the signal, the automatic control of valve opening, so as to achieve medium flow rate, pressure and level of regulation.

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