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渦街流量計(jì)英文

Vortex Flow Meters: An Introduction and Overview

Vortex flow meters are a type of flow meter that use the Von Kármán vortex street principle to measure fluid flow. They are commonly used in a variety of industries, including chemical, oil and gas, and water treatment.

The principle of operation of a vortex flow meter is based on the shedding of vortices from a bluff body inserted into a fluid stream. These vortices occur in a regular pattern, with a frequency that is directly proportional to the velocity of the fluid. By measuring the frequency of these vortices, the flow rate of the fluid can be determined.

There are two main types of vortex flow meters: insertion and inline. Insertion vortex flow meters are inserted directly into the piping of the fluid stream, while inline vortex flow meters are installed in-line, with the fluid flowing through the meter body.

One advantage of vortex flow meters is their ability to measure both liquids and gases, with high accuracy and repeatability. They are also capable of measuring flows in both directions, making them suitable for applications where flow reversal may occur.

However, vortex flow meters do have some limitations. They are sensitive to fluid density changes, and require calibration for different fluid types. In addition, they can be affected by changes in temperature and pressure, which can cause errors in flow measurement.

Another consideration when using vortex flow meters is their installation. Proper installation is critical for accurate measurement, and incorrect installation can lead to errors and poor performance. For example, if the meter is installed too close to an elbow or valve, turbulence may be introduced, leading to inaccuracies in flow measurement.

Despite these limitations, vortex flow meters remain a popular choice for flow measurement due to their reliability and accuracy. They are also compatible with a wide range of process control and automation systems, making them a versatile choice for process industries.

In conclusion, vortex flow meters are an important tool for measuring fluid flow in a variety of industrial applications. With their high accuracy and repeatability, they offer a reliable solution for flow measurement, although proper installation and calibration is critical for optimal performance.


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