What is a rotameter flow meter?
Rotometer, also known as Float Type Flowmeter, is widely used in industry. It can measure the flow of liquid, gas and steam, and it is suitable to measure the flow of small and medium pipe diameters (DN4 ~ 250).
The rotor flowmeter measures the fluid flow according to the throttling principle. But it changes the flow area of the fluid to keep the differential pressure above and below the rotor constant. Therefore, it is also called a variable flow area constant differential pressure flowmeter, also known as a float flowmeter.
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working principle of rotameter
Rotameter flow meter structure
A Rotameter flow meter is a variable area flow meter. It consists of measuring tube, float, indicator, process connection, and so on.
Rotameter flow meter working principle
When the measured fluid passes through the annulus formed by the cone and floats from the bottom to top.
The differential pressure produced at the upper and lower ends of the float forms the force for the float to rise.
When the rise of the float is greater than the weight of the float immersed in the fluid. The float rises.
The annulus area increases accordingly. The fluid velocity in the annulus drops immediately.
The differential pressure at the upper and lower ends of the float is reduced. The lifting force acting on the float also decreases.
Until the rising force equals the weight of the float immersed in the fluid, the float will stabilize at a certain height.
The height of the float in the tapered tube and the flow rate through it correspond to each other.
Extended reading: Beginner’s Guide: Variable area flow meter
What Is Difference Between Rotameter and Flow Meter?
Related Flow Measurement Solutions
Sino-Inst offers over 30 Rotameter flow meter products. About 50% of these are for liquids. 40% are for gas. At best price.
You can refer to the product price of the following Rotameter flow meter price:
Metal rotor flowmeter
Pipe size 1 inch
FOB Price: USD 381.50/pc~USD699.00/pc;
A wide variety of Rotameter flow meter options are available to you, such as free samples, paid samples.
Sino-Inst is a globally recognized supplier and manufacturer of Rotameter flow meters, located in China.
The top supplying country is China (Mainland), which supply 100% of the Rotameter flow meter respectively.
Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Rotameter flow meter products are most popular in Domestic Market, Southeast Asia, and Mid East.
You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.
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Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.