How Coriolis Mass Flow Meter Work

The meter diverts fluid through one or more vibrating tubes. As fluid flows, the induced Coriolis force causes a slight, measurable twist or phase shift in the tube’s vibration.

• Mass Flow: The degree of the phase shift between the inlet and outlet sensors is directly proportional to the mass flow rate.
• Density & Temperature: The resonant frequency of the oscillating tube changes based on the mass of the fluid inside, allowing for direct density measurement. Combined with an integrated temperature sensor, the meter simultaneously provides volumetric flow and concentration data.

Key Advantages

• True Mass Measurement: Measures mass directly, meaning results are unaffected by changes in temperature, pressure, or viscosity.
• Multivariable Output: Replaces multiple instruments by tracking mass, density, volume, and temperature simultaneously.
• Zero Pipe Runs: Does not require straight upstream or downstream piping runs, saving space in tight installations.
• No Moving Parts: Offers exceptional reliability and low maintenance since there are no internal gears or turbines to wear out.

Common Applications

• Oil, Gas & Marine: Ideal for custody transfer, bunkering, and loading hydrocarbons or cryogenic media.
• Food & Pharma: Utilizes hygienic designs for dosing, batching, and measuring density-dependent parameters (e.g., °Brix or alcohol concentration) in a sanitary environment.
• Viscous & Mixed Fluids: Highly effective for measuring dense slurries, highly viscous fluids (like bitumen or molasses), and even liquids with significant gas entrainment.