电磁流量计在现代自动化工业生产中非常重要，不少工厂已经在普及使用中。设备在我们使用过程中，难免会出现一些故障问题，电磁流量计在运行过程中的故障主要有外因和内因两种，想要及时解决问题的话，就必须要了解其故障原因。

当我们发现流量测量值与实际值不符时，首先要检查变送器的电路板问题。液体流速过低时，被测液体中含有微小气泡，气泡上升在管道上方逐渐会萃，则液体畅通流畅面积发生变化，气体多时还会产生干扰信号，影响丈量正确度。另外，信号电缆连接不好或使用过程中电缆的缘机能下降也会引起测量值不准的问题。在这个时候，可以选择更换电路板以解决问题。

当出现输出信号超满度量程的现象时，一般原因在于信号电缆接线接错或者断开，另外转换器的参数设定不准确也会引起该现象的发生。对于这个问题我们应该检查信号回路连接是否正常，若信号回路断开，输出信号将超满度值，应该将线路重新接好。

Electromagnetic flowmeter is very important in modern automation industry and many factories have been widely used. In the process of our use of the equipment, there will inevitably be some fault problems, electromagnetic flowmeter in the process of running the fault mainly has two kinds of external cause and internal cause, want to solve the problem in time, it is necessary to understand the cause of the fault.

When we find that the measured flow value does not match the actual value, we must first check the transmitter circuit board problem. When the liquid flow rate is too low, the measured liquid contains tiny bubbles, which will gradually emerge when the bubbles rise above the pipe. Then, the smooth and smooth area of the liquid will change, and when the gas is too long, interference signals will be generated, affecting the accuracy of measurement. In addition, the signal cable connection is not good or the insulation function of the cable in the process of use will also cause the measurement value is not accurate. At this point, you can choose to replace the circuit board to solve the problem.

When the output signal overfills the range, it is usually caused by wrong connection or disconnection of the signal cable. In addition, inaccurate parameter setting of the converter may also cause this phenomenon. For this problem, we should check whether the signal loop connection is normal. If the signal loop is disconnected, the output signal will exceed the full value, and the circuit should be reconnected.