Can pump vibrations cause problems with my Coriolis flow meter?
Hey, I have a pump installed upstream of my Coriolis flow meter. Can the pump vibration affect the flow measurement? The vendor said it works in a high frequency so I don't need to worry about that. What does that mean?.
Expert’s answer: Can pump vibration cause problems with my Coriolis flow meter?
Yup, that vibration can affect your measurement! But don’t get upset yet. If this model works with a high frequency, then you won’t have the vibration resonating in the same frequency as your flow meter.
You only need to worry if the resonance of the pipe achieves the same resonance of your measuring tube. Vendors have found a number of ways to fix that issue, not just high frequency.
For instance, Yokogawa uses an inner box connected to the outer box, with the idea that the outer box will absorb the vibrations. The crew from Azbil put a torsion bar inside the detector that vibrates the tube indirectly.
You can also find companies suggesting that you install vibration isolators. Funnily enough, although some companies claim their technology eliminates external vibration, their calibration rigs have vibration isolators installed. Is this double security? Dunno.
Anyway, this video can tell you more about Coriolis flow meters:
And if you want to read more, then these articles will help:
If you work with automation, you’ve at least heard of Coriolis meters. But do you know how they work? The physics behind them? Don’t worry, we got you covered.
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