What are the level gauges that use the mass of the material (gravity) as a basis for conversion?
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When changing the storage medium in a tank, it is necessary to consider the impact of changes in the material density on the tank. For example, if the density of the material decreases, the level gauge in the storage tank may indicate a higher level than actual, indicating that the new material has already spilled over. . . So the question is, what are the level gauges that use the mass of the material (gravity) as a basis for conversion? I think of one type: the double-flange differential pressure level gauge. What else? All the experts in this section are specialists in instruments; I hope they will be kind enough to offer their guidance.
Float level transmitters convert the level by calculating the torque on the torsion tube resulting from changes in buoyancy; therefore, when the density of the medium changes, this also affects the level indication.