Expert’s answer: Yokogawa AXR instalation requirements

Finally, a simple question!

Yes, there is definitely a requirement: you must have a straight pipe before and after the flow meter in order to to avoid problems with the flow measurement.

Usually the magmeter requires a minimum installation condition. However, there are companies on the market, claiming that their flow meters don’t require a minimum straight run. Don’t let them fool you: the accuracy of most of them is not the same as the minimum installation is required.

The Yokogawa AXR will require the same conditions as most of the magmeters on the market. The requirement can change, depending on the type of installation, but for most of the applications the requirement is 5 diameters of straight runs before the flow meter and 2 diameters of straight runs after the flow meter.

Yokogawa AXR
Yokogawa’s technical manual

On the picture you can see Yokogawa’s manual, illustrating different types of installations and requirements. Enjoy!

Other resources that might interest you:

Rosemount magnetic flow meter 8712I have installed a Rosemount magnetic flow meter 8712 and the operator says that the magmeter is measuring without flow. I need to change the low cutoff value of it, how can I do it?

Problems when installing magnetic flow meter? – We need to cut a concrete sewer pipe and install a magnetic flow meter suitable for partially filled pipes. Can you foresee any problems with this installation? Will I need earthing rings?

Energy monitoring system – We are implementing an energy monitoring system, in which we can use either a Differential Pressure wireless or a magneter. We would like to know what are the differences between these two solutions.

How to do a magmeter check for a magnetic flow meter? – For over 10 years I had this magnetic flow meter which appear to have stopped working. It gives a reading if there is nothing passing through it. I removed it and found no coating or damage to the internal wall. I just wondered if there is anything else I can check?

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