7ML1025-1BD01德国西门子超声波流量计*的详细资料：

   德国西门子超声波流量计*    西门子超声波流量计正确选型才能保证西门子超声波流量计更好的使用。选用什么种类的西门子超声波流量计应根据被测流体介质的物理性质和化学性质来决定?使西门子超声波流量计的通径、流量范围、衬里材料、电极材料和输出电流等都能适应被测流体的性质和流量测量的要求。

    西门子超声波流量计由超声波换能器、电子线路及流量显示和累积系统三部分组成。超声波发射换能器将电能转换为超声波能量，并将其发射到被测流体中，接收器接收到的超声波信号，经电子线路放大并转换为代表流量的电信号供给显示和积算仪表进行显示和积算。这样就实现了流量的检测和显示。

    西门子超声波流量计常用压电换能器。它利用压电材料的压电效应，采用适出的发射电路把电能加到发射换能器的压电元件上，使其产生超声波振劝。超声波以某一角度射入流体中传播，然后由接收换能器接收，并经压电元件变为电能，以便检测。发射换能器利用压电元件的逆压电效应，而接收换能器则是利用压电效应。

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    德国西门子超声波流量计*

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