Note that an alarm relay in the controller is not sufficient protection for all eventualities.

注意；控制器内的报警继电器不是在任何情况下都能提供有效保护。

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The relay feedback self-tuning PID based on internal model control (IMC) was adopted for self-tuning PID controller for long time-delay process.

大时滞过程的自整定pid控制器，采用基于内模控制策略的继电型PID自整定。

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A relay operated programmable temperature controller is presented for production of a novel curing agent(DADMT) used in the casting of the polyurethane elastomer.

对于生产聚氨酯浇注弹性体新型固化剂DADMT的温度程序控制，比较了继电式和可编程序控制器进行温度程序控制的两种方案。

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