Solutions to common faults when using electromagnetic flowmeters(mag flowmeter)

 


Solutions to electromagnetic flowmeter(Mag meter) faults

1. No flow signal: If the electromagnetic flowmeter(EMF) does not detect a flow signal, it may be because the fluid is not passing through the flowmeter or the electrodes of the electromagnetic flowmeter(Magmeter) have poor contact. You can check whether the fluid is flowing, whether the electrode is clean, and make sure the electrode is in good contact with the fluid.


2. Output jitters: 

If the output signal of the electromagnetic flowmeter is unstable, it may be due to unstable fluid flow or the installation position of the electromagnetic flowmeter is not stable enough. You can check the flow of fluid and whether the installation position of the electromagnetic flowmeter is stable.


3. Zero point unstable: 

If the zero point of the electromagnetic flowmeter is unstable, it may be due to dirt on the electrode surface or the electromagnetic flowmeter is not properly grounded. The electrode surface can be cleaned to ensure that the electromagnetic flowmeter is properly grounded.


4. The flow measurement value does not match the actual value:

If the flow value measured by the electromagnetic flow meter does not match the actual flow value, it may be due to incorrect parameter settings of the electromagnetic flowmeter, or the fluid characteristics do not match the settings. The parameter settings of the electromagnetic flowmeter can be checked and adjusted to match the fluid characteristics.


5. The meter has no display:

It may be caused by water entering the converter. At this time, the power needs to be cut off and the water must be cleared. If it does not display, the converter needs to be replaced. Or check whether the power wiring is correct and secure. If the fuse is blown, you need to replace it with the same type of fuse.


6. Flow measurement is inaccurate:

It may be due to factors such as changes in the conductivity of the medium, polarisation voltage of the electrode, interference from the signal cable, measured ground potential and stray current flow direction of the pipeline. Detailed inspection and adjustments are required.


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Theory of Magnetic Flow Meters

Theory of Magnetic Flow Meters

Theory of Magnetic Flow Meters

Theory of Magnetic Flow Meters

Theory of Magnetic Flow Meters

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