Vorticemõõturid

Vorticemõõturid, also known as vortex meters, are instruments used to measure the flow rate of liquids, gases, and steam. They operate on the principle of the vortex shedding phenomenon. As a fluid flows past a bluff body, such as a shedding element or strut placed in the flow path, it generates alternating vortices behind the body. The frequency at which these vortices are shed is directly proportional to the velocity of the fluid, and consequently, to the volumetric flow rate.

The vortex meter typically consists of a bluff body and a sensor. The sensor, often a piezoelectric crystal or a strain gauge, detects the pressure fluctuations caused by the shedding vortices. This detected frequency is then converted into a flow rate signal. Several types of vortex meters exist, including those with integral sensors and remote sensors. The accuracy of a vortex meter is influenced by factors such as the Reynolds number of the flow, the shape and size of the bluff body, and the fluid properties.

Vorticemõõturid are known for their robustness and lack of moving parts, which contributes to their reliability and low maintenance requirements. They are suitable for a wide range of applications in industries such as chemical processing, power generation, and oil and gas. Their ability to measure a broad spectrum of flow rates, including low flows, and their relatively wide operating temperature and pressure ranges make them a versatile choice for many industrial metering tasks. However, they can be sensitive to upstream flow disturbances, necessitating proper installation with sufficient straight pipe runs.