Coriolis Flow Meter

Coriolis flowmeters

A Coriolis meter is rooted in the principles of motion mechanics. When the process fluid enters the sensor, it undergoes a split. During operation, a drive coil stimulates the tubes, causing them to oscillate in opposing directions at their natural resonant frequency. These oscillations generate a voltage through each pickoff, creating sine waves that reflect the motion of one tube relative to the other. The time delay between these two sine waves, known as Delta-T, is directly proportional to the mass flow rate.

Principles of Coriolis Flow Meter Technology

At the heart of Coriolis flow meter technology lies the fundamental principles of motion mechanics. These meters operate by harnessing the mechanics of motion within a vibrating tube. As the fluid courses through this tube, it experiences acceleration as it approaches the point of maximum vibration amplitude. Conversely, as the fluid decelerates, it moves away from this point of peak amplitude, resulting in a twisting reaction of the flow tube during its journey through each vibration cycle.

Versatility

Coriolis flow meters are essential across a broad spectrum of flow measurement applications. With an extensive range of line sizes, they offer exceptional flow measurement precision and turndown capabilities, making them a staple in various industries. Coriolis meters can measure flow rates ranging from just a few grams per hour to an astounding 120,000 pounds per minute. Their dynamic range stems from the linear nature of the signal they produce while measuring flow.

 

Applications

Coriolis flow meters find utility in diverse, demanding applications, spanning industries such as oil and gas, water and wastewater, power generation, chemical processing, food and beverage production, and life sciences.

 

Typical applications for Coriolis flow meters include:

  • Measurement of flow rates spanning low to high ranges
  • Fiscal custody transfer applications
  • Handling challenging liquids, gases, and slurry applications

Mass flowmeter

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