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.