The Basics Of A Rosemount Vortex Flow Meter

by | Apr 17, 2018 | Industrial Supplier

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Using a simple design to produce a highly accurate, durable and effective way to measure flow through a system, a Rosemount vortex flow meter is the ideal option for many different environments, media, and applications.

The design of the Rosemount vortex flow meter is critical to the long-life cycle of these components. There are no moving parts to the meter, which means nothing to wear out or to fail. Additionally, with the design of the meter they are easy to install, rarely have leak issues related to the meter itself, and they are able to operate with a very wide turndown range in the flow.

The meters are also set to use very limited power. This means them ideal for use in hard to access and in remote locations. They also do not require any impulse lines, so installation is simply placing the meter in the system and ensuring it is correctly secured and sealed.

Uses

While some flow meters are designed for a specific media, the Rosemount vortex flow meter can be used with steam, gas, and liquids. They are ideal for use in corrosive media and will have a long-life cycle, even with high temperatures and high pressure throughout the system.

Measurement

Vortex flow meters rely on the von Kármán effect. This is the principle that a body positioned in the flow will create a specific pattern of vortices behind the body. This obstruction or body is known as a shedder bar, and the media will divide on the front of the bar, creating two sets of vortices on the back side.

On the back side of the bar is a sensor which records the frequency of the vortices. As the shedder bar is consistent, changes in the frequency of the vortices are recorded by a sensor in the back of the bar.

In addition, temperature and pressure can also be used in the flow meter to provide a compensated measurement. This is often in processing facilities, oil and gas production as well as in industrial plants and facilities.