Rotameter is a flow meter widely used in industrial applications for measuring the flow rate of liquids or gases in pipelines. Its working principle is based on fluid dynamics and mechanical principles, measuring the flow rate by observing the speed at which the fluid propels a rotor to rotate.

Types of Rotameters:

1. Float-type Rotameter: This is the most common type of rotameter. It consists of a tube and a float (usually made of metal or plastic) that moves up and down with variations in fluid velocity, rising as the flow rate increases.

2. Screw-type Rotameter: This type of rotameter contains a screw-shaped rotor whose rotational speed is proportional to the fluid flow rate. As the fluid passes through the pipeline, the screw rotor rotates due to the force exerted by the fluid, and the flow rate is determined by measuring the rotational speed of the rotor.

3. Magnetic Rotameter: This type of rotameter includes an internally magnetic rotor. The flow rate is determined by measuring changes in the magnetic field generated by the rotating rotor when it is placed in the fluid flow. It is often used in conjunction with magnetic induction flow meters.

Principle:

The principle of operation of a rotameter is based on fluid dynamics and mechanical principles:

• When fluid flows through the pipeline, it propels the float, screw, or magnetic rotor, causing it to rotate or move.
• The float or rotor is balanced between buoyancy and gravity, and its rotation speed or position is directly proportional to the fluid velocity.
• By observing the position of the float, the rotational speed of the screw, or the changes in the magnetic field generated by the rotor, the flow rate can be determined.

Advantages:

1. Simple and Reliable: Simple structure, durable, and reliable operation.
2. Wide Applicability: Suitable for measuring the flow rate of various liquids and gases in diverse industrial settings.
3. Direct Reading: Flow rate can be directly read by observing the position of the float, rotational speed of the screw, or changes in the magnetic field, eliminating the need for complex electronic devices.
4. No External Power Required: Works solely based on the mechanical action of the fluid flow, saving energy.
5. Suitable for High-Temperature and High-Pressure Environments: Can be used in high-temperature and high-pressure conditions without limitations.
6. Cost-effective: Lower cost compared to advanced electronic flow meters, with relatively low maintenance expenses.

While rotameters offer numerous advantages, they also have limitations such as restrictions on flow rate range and relatively lower accuracy, requiring consideration of specific application needs and constraints when selecting them for use.

Shaanxi Qianyi Tuoda Technology Co., Ltd. www.sxqytd.com Tel：+8618829679311

• Industrial instrument,China Shaanxi Qianyi Tuoda Technology Co.,Ltd.★★★ Titanium ,Nickel,Titanium Stirrer| Instrument Sensors|Russian Standard Titanium Plate BT1-0|American Standard Titanium Plate Grade2 | Chinese Standard Titanium Plate TA1 TA2 | Titanium Flanges | Titanium Fittings | Nickel Tubes | Titanium Tubes|Titanium Rod| Supplying Stirrer|Supplying Nickel|Supplying Titanium