Is the pressure difference between the upper and lower parts of the rotor in a rotameter determined by the pressure of the fluid?

2015-10-20View Original

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Is the pressure difference between the upper and lower parts of the rotor in a rotameter determined by the pressure of the fluid?

Reply #22015-10-20

It is determined by the weight of the float and the density of the fluid.

Reply #32015-10-20

The pressure difference up and down on the rotor is determined by the pressure of the fluid.

Reply #42015-10-20

No, it is determined by the weight of the rotor.

Reply #52015-10-21

I think, in addition to the weight of the rotor, there are also the shape of the rotor (which primarily determines its volume), as well as the density and flow velocity of the fluid. The pressure difference is mainly caused by the weight of the rotor, the buoyant force acting on it, and the reactive forces exerted by the fluid on the rotor.

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