One of the newest types of flow meters on the market is also one of the most effective and accurate in a wide range of different applications and processes. The Micro Motion Coriolis meter works on the principle of the Coriolis effect, which allows for extremely accurate flow readings.
Initially, the Micro Motion Coriolis meter is a more expensive option than the more common and traditional option of a differential pressure flow meter. However, the longer duty cycle, the extremely limited maintenance requirements and the increased accuracy even in demanding applications makes this a meter that offers a good return on investment over time.
The Operating Principle
As the fluid from the system comes into the meter, it is typically divided into two small tubes that run parallel inside the housing. On these tubes, at specific intervals, there are magnets and coils which act as sensors and are called pickoffs.
These pickoffs register the amount of twist in the tubes that occurs when the flow rate changes and the vibration of the two tubes changes. As the flow rate increases, so does the twisting motion in the tubes. When there is no flow through the meter, the two tubes and their corresponding sine waves are in harmony.
The increase in flow through the tubes and the subsequent change in vibration frequency, phase shift and amplitude are recorded at the pickoffs. This change in the sine waves, which is measured in relation to the other tube, and allows for the accurate determination of the flow rate.
The use of Micro Motion Coriolis meter allows for precise measurement of liquids in most systems. They are easy to install and require no maintenance, which is essential to consider when used in remote and hard to access areas of a system.
