流量计原理流量计分很多种：涡轮流量计，电磁流量计，超声波流量计，皮托管流量计，孔板流量计，弯管流量计等等。因适用的工况不同，所以原理也不同。下面我来一一介绍以上提到的几种流量计的原理：涡轮流量计原理：涡轮流量计由涡轮、轴承、前置放大器、显示仪表组成。被测流体冲击涡轮叶片，使涡轮旋转，涡轮的转速随流量的变化而变化，即流量大，涡轮的转速也大，再经磁电转换装置把涡轮的转速转换为相应频率的电脉冲，经前置放
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