Effect of electromagnetic pipeline mapper on magmeter

Flow Q&A

I'm looking for references and comments about the effects that an electromagnetic pipeline mapper can produce on a magnetic flow meter. I'd like to know any obstacle or special consideration when using both devices at the same time on a pipeline of more than ten kilometers.

Expert’s answer: Effect of electromagnetic pipeline mapper on magmeter?

Is there an effect of electromagnetic pipeline mapper on magmeter? Indeed, electromagnetic interference often comes up when we talk about magmeters. However, you can reduce or eliminate such effects on your flow measurement in several ways.

For starters, you can use a magmeter 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.

Magmeter – Courtesy of Endress+Hauser

You can also use ground rings. The correct process grounding keeps the sensor and fluid at the same potential. So that means the device only measures the induced flow signal. And that way, they’ll prevent interference in the flow meter. What more, they support accurate and reliable performance.

Want more information? If so, here’s more info on magmeters:

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