Electromagnetic flowmeter users reflect the failure of the problem

Case introduction

Fault problems reported by electromagnetic flowmeter users and clever solutions:

Electromagnetic flowmeter: Generally, the faults reported by users include: 1. Fluctuation of measured values ​​2. Inaccurate measured values ​​3. There is medium but the meter displays zero. 4. The meter has no display or has a display but no output. Common solutions are: 1. The reason for the fluctuation of the measured value may be: wiring problems (applicable to newly installed flow meters). Generally, the shielded wire is not connected. Connect it well; there may be problems with the user's process, and the pipe may not be full (it may be that the early installation does not meet the installation conditions, so the pipe must be full; during later use, there is no exhaust valve installed in the pipe to hold the air). Is the valve at the front end of the flow meter fully open? If it is not fully Turning on may cause fluctuations. Check whether the conductivity is too low. If the conductivity is low, it may cause large fluctuations. Check whether water has entered the flow meter. If water has entered, it can be directly judged to be a broken flow meter. Check whether the resistance of the sensor is Normal, use GS8 to test whether the converter is normal. If conditions permit, you can replace it with a normal one. 2. The reason for inaccurate measurement values ​​may be: the user has connected the wires incorrectly. Check the wiring and check whether the sensor and converter instrument numbers are consistent. If It is not a set. You need to check the pipe diameter, GK, GKL, and excitation frequency. The user has to close the bypass pipe and whether the medium is easy to scale. If it is easy to scale, it will also lead to inaccurate measurement. 3. If there is medium flow, the instrument will display as The reason for zero may be: check whether the connection line is normal, there may be an interruption in the middle line, check whether the pipe is full, make sure the medium flows through the sensor, check whether the front and rear valves are open, check whether the conductivity of the user's medium is within the appropriate range, if the conductivity is low, Check whether the threshold value is too high. 4. The reason why the meter has no display or displays but no output may be: measure whether the user's power supply is qualified, check whether the user's output wiring is correct, use a multimeter to measure whether there is current output, and check the fuse in the converter movement. Whether it is broken (IFC300 has two fuses, power fuse and output fuse; IFC100 has one fuse).