The pulse type vortex flowmeter applies the principle of fluid oscillation to measure flow rate. When the fluid passes through the vortex flowmeter in the pipeline, two columns of vortices proportional to the flow velocity are alternately generated up and down behind the vortex generator in the triangular column. The release frequency of the vortices is related to the average velocity of the fluid flowing through the vortex generator and the characteristic width of the vortex generator. Compressed air is an important secondary energy source for enterprises and institutions, mostly converted from electrical or thermal energy through compressors. In this case, the accuracy of air flow measurement is particularly high, and it is often equipped with automatic adjustment. The selection of compressed air flow meters is a very cautious matter. To achieve the correct selection of on-site processes, we must first understand the properties of the on-site process fluid. Only with a thorough understanding can we make the correct judgment on the selection.

Pulse type vortex flowmeter is a sensor used to measure the flow rate of fluids such as liquids and gases. It is based on the principle of vortex street effect, and determines the flow rate by measuring the pulse signal generated by the vortex street rotating in the fluid.

Working principle

The pulse type vortex flowmeter consists of a vortex and a sensor. A vortex street is usually made of a metal blade and installed inside a fluid pipeline. When a fluid passes through a pipeline, the vortex street is impacted by the fluid and rotates. The vortex waves generated by the rotating vortex street can cause changes in the magnetic field in the sensor, resulting in the output voltage pulse signal of the sensor. The frequency of the voltage pulse signal is directly proportional to the rotational speed of the vortex, so the flow rate can be determined by measuring the frequency of the pulse signal.

application area

Pulse type vortex flowmeter is widely used in various industrial and commercial fields, such as petrochemicals, food processing, environmental protection, water treatment and other industries. They are commonly used to measure the flow rates of liquids and gases, including water, oil, natural gas, steam, and various other chemical substances. Due to its reliability and accuracy, pulse type vortex flowmeters are widely used in industrial automation control systems.

advantages and disadvantages

Pulse type vortex flowmeter has many advantages, among which the prominent one is its wide measurement range, suitable for various fluid media, especially under harsh conditions such as high temperature, high pressure, low density, and high viscosity. In addition, they also have the characteristics of fast response, high sensitivity, good accuracy, and high reliability. Compared to other types of flow meters, it has a lower cost and is easy to install and maintain.

However, pulse type vortex flowmeters also have some drawbacks. For example, when liquid or gas contains particulate matter, vortex streets are prone to blockage. In addition, for high viscosity liquids, the rotational speed of the vortex street will be hindered, leading to quantitative errors. When using a pulse type vortex flowmeter, it is also necessary to consider factors such as the size and shape of the pipeline, as well as the velocity of fluid flow.

conclusion

In summary, pulse type vortex flowmeter is a widely used flow sensor in various industrial and commercial fields. They are based on the principle of vortex street effect and determine flow rate by measuring the frequency of pulse signals. Despite some limitations, pulse type vortex flowmeters have many advantages, such as a wide measurement range, high sensitivity, good accuracy, and high reliability. Due to its low cost, easy installation and maintenance, it has been widely used in industrial automation control systems.

Pulse type vortex flowmeterSpecification Table：

Shell material: stainless steel, carbon steel

Nominal pressure: standard sensor1.0MPa~4.0MPa

High voltage sensor6.3MPa~42MPa(Special Orders