Zero drift of mass flow meter
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Our company has a mass flow meter that’s acting completely crazy: its zero point drifts negatively at night and positively during the day. Have any of you sea friends encountered this situation? Could you give me some advice?
It might be a change in specific gravity caused by variations in temperature.
Is there a problem with the temperature sensor? Our factory once had a Rosemount mass flow meter that was showing significant drift; it was later found that water had entered the core processor unit.
Check the pipelines on both sides; there is fluid backflow at night (it’s not necessarily actual flow – it might be some vaporization causing the fluid to move back and forth within the testing tube), and there is also some leakage during the day. If there are shut-off valves on either side, turn them off to determine whether the problem lies with the gauge itself or with the connected pipelines.
The Ellite 1700 mass flow meter often experiences zero drift; several units in our company have shown this problem. It’s sufficient to set the zero point on the inlet and outlet stop valves; the reason is unknown.
The Ellite 1700 mass flow meter often experiences zero drift; several units in our company have shown this problem. It’s sufficient to set the zero point on the inlet and outlet stop valves; the reason is unknown.
It’s likely that the pipeline is not filled with the medium; I hope to confirm this.
Zero drift usually occurs due to poor performance of the signal amplification circuit. One of the most important indicators for evaluating a signal amplification module is zero-point drift; of course, the lower it is, the better. I think a zero drift of 1 uv/℃ is quite good
First, find out what medium is flowing through the mass flow meter, to determine whether it is caused by a light medium or by the condensation of a heavy medium, and take appropriate measures accordingly. The second factor is weather: whether rain causes water to enter the core processor, or whether we are in a season with large temperature differences that lead to changes in the medium
The stability of Yokogawa’s mass flowmeters is the best!