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福建鸿飞达自动化科技有限公司
主营：自动化配件,电子设备
福建鸿飞达自动化科技有限公司
主营：自动化配件,电子设备
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阀门按阀门输出和输入信号的增益符号分为正作用阀门和反作用阀门。正作用阀门的输入信号增加时，输出信号也增加，因此，增益为正。反作用阀门的输入信号增加时，输出信号减小，因此，增益为负。
按阀门输入信号是模拟信号或数字信号，可分为普通阀门和现场总线电气阀门。普通阀门的输入信号是模拟气压或电流、电压信号，现场总线电气阀门的输入信号是现场总线的数字信号。
按阀门是否带CPU可分为普通电气阀门和智能电气阀门。普通电气阀门没有CPU，因此，不具有智能，不能处理有关的智能运算。智能电气阀门带CPU，可处理有关智能运算，例如，可进行前向通道的非线性补偿等，现场总线电气阀门还可带PID等功能模块，实现相应的运算。
按反馈信号的检测方法也可进行分类。
例如，用机械连杆方式检测阀位信号的阀门；用霍尔效应检测位移的方法检测阀杆位移的阀门；用电磁感应方法检测阀杆位移的阀门等。
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