Choosing different options in flow meters can have an impact on several aspects of any system. Specific types of meters are ideally suited to specific types of systems and applications, while others are more general in their use.
For general types of measurement, the choice of volumetric flow meters is often more than enough. These types of meters are lower in cost, but they also have limitations to consider. For mass flow types of measurements, which can be used for both liquids and gases, choosing a micro motion Coriolis meter would be the best option.
Understanding the Meters
All types of Coriolis meters operate through the use of the Coriolis effect. This principle was named after the French engineer and mathematician Gaspard Gustave de Coriolis. He publishes a paper in 1835 which outlined the way that objects move within a frame of references that is rotating.
With a micro motion Coriolis meter, the meter or the meter tubes are not rotating, but rather the fluid or media flowing through the tubes creates a twisting motion in the tubes. The higher the flow rate in the tubes, the more significant the twisting motion.
By using a magnetic coil, the two tubes in the meter can be directed to vibrate in opposition to each other with the flow through the two tubes. Throughout the tubes, there are sensors, called pickoffs, which read the changes in the sine waves created by the magnetic coil.
When there is no flow through the tube, the two tubes produce sign waves in harmony with each other. This changes as the tubes begin to carry the fluid, with the difference that develops in the sine waves converted into a mass flow rate measurement that is highly accurate.
The micro motion Coriolis meter is ideal in many applications in including for fluids and gas flow. They are a low-maintenance type of flowmeter that is ideal in most applications.
