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德国西门子SIEMENS阀位传送器/C73541-A430 -D78

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德国西门子SIEMENS阀位传送器/C73541-A430 -D78

阀位传送器与各类调节阀配套使用，顾名思义阀位传送器就是用以将调节阀的位移变化，转换成相对应的气动模拟信号或电流信号，从而使操作人员在控制室就能了解现场情况。实际上，阀位传送器是调节阀形程输出的反馈装置，可以广泛应用于远距离操作及重要的自控回路中，监测调节阀的形程状况。

德国西门子SIEMENS阀位传送器/C73541-A430 -D78
　　其中，气动阀位传送器动作原理：当执行机构接受气动信号时，执行机构动作。档杆与执行机构的推杆相连接，并带动传送器的转轴使凸轮转动，副杠杆向下转动，拉伸弹簧的拉力减小，此时主杠杆绕支点转动，使挡板靠近喷嘴，放大器的背压增加，推动滑阀左移，气源压力经放大器滑阀进入气路。一路输入到阀位显示仪表，另一路输入到反馈波纹管，对主杠杆产生推力。当这个力对支点的作用力矩，与弹簧的拉伸力对支点的作用力矩相等时，达到平衡状态，阀位传送器已将阀门行程转换为对应的输出压力

德国西门子SIEMENS阀位传送器/C73541-A430 -D78

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