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Metal Tube Flowmeter

2025-04-16
Rotameter/Metal Tube Flowmeter
Metal tube flowmeter is in the measuring tube. As the flow rate changes, the float moves upward. At a certain position,
the buoyancy of the float and the weight of the float are balanced. At this time, the flow annular gap area between the float and the orifice plate (or cone tube) remains constant.
The annular gap area is proportional to the rising height of the float, that is, the rising position of the float in the measuring tube represents the size of the flow rate.
The changing position of the float is transmitted to the external indicator by the internal magnet, so that the indicator correctly indicates the flow value at this time.
This makes the indicator housing not in direct contact with the measuring tube. Therefore, even if a limit switch or transmitter is installed, the instrument can be used
under high temperature and high pressure working conditions.


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