Electromagnetic flowmeter site common problems and processing

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 The following are:

1. The reasons for the fluctuation of the measured value may be: wiring problems (applicable to newly installed flow meters), usually the shielding wire is not connected properly; user process problems, the pipe may not be full (it may be that the early installation does not meet the installation conditions) , it is necessary to ensure that the pipe is full; in the later use, there is no exhaust valve installed in the pipeline to hold the air.) Check whether the valve at the front end of the flow meter is fully open. If it is not fully open, it may cause fluctuations. Check whether the conductivity is too low. If the conductivity is low, it may cause If the fluctuation is large, check whether water has entered the flowmeter. If water has entered, it can be directly judged as a broken flowmeter quality problem. Measure whether the sensor resistance is normal. Use GS8 to test whether the converter is normal. If conditions permit, you can try replacing it with a normal one.

2. The reason for inaccurate measurement values ​​may be: the user has connected the wires incorrectly. Check the wiring to see if the sensor and converter instrument numbers are consistent. If they are not the same set, you need to check the pipe diameter, GK, GKL, and excitation frequency. The user will bypass Is the tube closed? Is the medium easy to scale? If it is easy to scale, it will also lead to inaccurate measurement.

3. There is medium flow. The reason why the meter displays zero may be: Check whether the connection line is normal. There may be an interruption in the middle line. Check whether it is guaranteed. When 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 there is no display or 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 whether the fuse in the converter core is broken (IFC300 has two fuses, power fuse and output fuse; IFC100 has one fuse ).