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Metal Tube Rotameter - China

price: 1.00 Dollar US$

Metal Tube Rotameter

Products Photos Catalog Metal Tube Rotameter Photos Catalog

The metal tube rotameter (also known as the variable area flowmeter) is a flow instrument based on the variable area measurement principle, mainly used for continuously measuring the instantaneous flow of liquids, gases, or steam.

Its core feature is the use of a metal tube body, making it suitable for harsh working conditions such as high – temperature, high – pressure, and corrosive media.

Working Principle of Metal Tube Rotameter

1 - Structural Components

Conical metal tube: Designed with an inverted conical interior.

Float: An internally – placed magnetic float that moves up and down with changes in flow rate.

Indicator: Converts the position of the float into a flow reading through a magnetic coupling system (can be equipped with a remote – transmission signal output).

2 - Working Process

When the fluid passes through the conical tube from bottom to top, the float suspends under the balance of fluid dynamic force and gravity.

When the flow rate increases, the float rises, and the annular flow area increases until a new equilibrium position is reached.

The position of the float has a linear relationship with the flow rate.


Company Contact:


  • Phone: 17321381790

  • Address: 5th Floor, Building A2, No. 688 Huancheng North Road, Fengxian District, Shanghai , Shanghai , China

  • Email: Email


Published date: August 30, 2026

  • Business Description: Shanghai Lisen Measurement & Control Technology Co., Ltd. is a company specializing in process automation instruments.

    Its main business includes the research and development, production, and sales of various level switches and level gauges, as well as the operation of related supporting industries.

    The products cover liquid level sensors, flow meters, pressure, temperature, etc., and are widely used in various working conditions across various industries.

    We provide customers with the best solutions promptly and economically based on their actual needs.

    Our Products:

    - Sanitary Flowmeter

    - Mag7000 Flow Meter

    - Liquid Mass Flow Meters

    - Vortex Flow Meter For Liquid And Gas

    - Metal Tube Rotameter

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