【Daily Question No. 51】February 20, 2021
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This post was last edited by Jubao Pen Yi on 2021-2-20 at 11:48. [Daily Question No. 51] February 20, 2021: A rotor flow meter does not belong to the category of differential pressure flow meters. True or False? () Please reply within two days.
Correct. Explanation: In a differential pressure flow meter, the flow area of the throttling element remains constant. Flow measurement is achieved by utilizing the change in differential pressure across the throttling element as fluid passes through it, due to differences in flow velocity. Also known as a variable differential pressure flow meter. A rotameter utilizes the change in the flow area between the rotor and the conical duct to measure flow. The rotor is not fixedly inserted in the pipeline, but floats within the fluid on either side of it, with the pressure difference across the rotor remaining essentially constant. Therefore, it is also known as a differential pressure flow meter.