Yokogawa mass flow meter
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When water flows through the mass flow meter, the density reads over 400; when there is no flow, the density shows 0. During normal production, glucose is used, and the density in that case is over 1000, which is normal. Why is that?
The medium inside is water now, so its density shouldn’t be 0, right?
The following figure shows another flow meter
There are bubbles in the water, indicating a two-phase flow state.
The header looks like an electromagnetic flowmeter
How can density be measured without any flow rate? Are you sure this is a mass flow meter?
First, is this confirmation that it is a mass flow meter? Provided that the conditions are met, the density of a mass flow meter remains constant; it does not change just because the material is in motion or at rest. The reason for density changes is when the conditions are not met, resulting in a two-phase condition of gas and liquid. Secondly, if for an electromagnetic flowmeter the density of the material is entered manually, it doesn’t seem to be measured directly
The flow meter is a mass flow meter; when the flow meter is empty, its density is 0, and during operation the density changes depending on the medium used!
Yokogawa’s flowmeters, whether mechanical or electromagnetic, have the same gauge