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Metal Rotameter Selection and Use - Focus on Microfluidic Control Technology

Measurement principle and characteristics of metal rotor flowmeter

The measurement part of the metal rotameter is composed of an orifice plate and a conical float. When the fluid flows up/through the tube, the conical float moves upward and reaches equilibrium at a certain position. At this time, the annular gap between the float and the orifice plate remains constant. The area of the annulus is proportional to the rise of the float and the height of the float represents the magnitude of the flow. When the float moves up and down, it is transferred to the external indicator in the form of magnetic coupling so that the pointer of the indicator follows the displacement of the float. , And with the aid of the cam plate, the pointer linearly indicates the size of the flow.

Features: Metal rotor flowmeter is simple in structure, reliable in operation, wide in application range, high in range ratio, generally 10:1

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