Using an electromagnetic pipeline mapper with an electromagnetic flow meter can cause interference.
Electromagnetic interference often comes up when we talk about electromagnetic flow meters, as it can disrupt measurements to the point of making the device unusable. However, fortunately, there are ways you can reduce or eliminate the effects on your flow measurement.
The easiest solution is to use an electromagnetic flow meter that blocks interference. Most manufacturers have this option in their portfolios. In fact, some of them have it as standard and others as special versions.
Alternatively, you can also use grounding rings. The correct process grounding keeps the sensor and fluid at the same potential. This means the device only measures the induced flow signal. This will prevent interference in the electromagnetic flow meter and make the measurements more accurate even if you are not worried about interference.