Which type of metering device is typically used for very high flow rates?

Electromagnetic flow meters are particularly suited for measuring very high flow rates due to their design and operation principles. These meters utilize Faraday's law of electromagnetic induction, where a conductive fluid passing through a magnetic field generates a voltage that is proportional to the flow velocity. This allows for accurate measurements over a wide range of flow rates, making them ideal for applications involving significant fluid volumes.

Moreover, electromagnetic flow meters are not affected by the viscosity of the fluid and can handle various fluid types, including slurries and other challenging mediums. This capability to maintain accuracy at high flow rates is a significant advantage in industries where large fluid volumes are common, such as water treatment, chemical processing, and pulp and paper manufacturing.

While positive displacement meters are also capable of high flow measurements, they are typically more suited for lower flow rates and are less effective in handling varying fluid properties. Ultrasonic meters excel at measuring flow rates too, but their performance can diminish in very high flow scenarios compared to electromagnetic types. Mechanical flow meters, although widely used, often fall short in high flow applications due to wear and tear and their sensitivity to fluid turbulence and viscosity.

In summary, for very high flow rates, the electromagnetic flow meter stands out as the most reliable and versatile