Coriolis Mass Flowmeters

Coriolis Mass Flowmeters

Coriolis mass flowmeters measure mass flow directly using the Coriolis effect in one or more vibrating measuring tubes. As fluid moves through the oscillating tube, inertial forces create a small, measurable twist. The resulting phase shift between sensors is proportional to mass flow, while tube vibration frequency provides fluid density and an integrated temperature measurement supports thermal compensation and additional outputs.

Direct, simultaneous access to mass flow, density, and temperature enables tight process control and reliable quality assurance without relying on inferred properties. From these primary variables, additional characteristics can be derived, including volume flow, reference density, and concentration-related values such as °Brix, °Baumé, or °API. This multi-parameter capability is especially valuable where product properties vary or where composition must be tracked in real time.

Coriolis technology is inherently independent of flow profile and largely insensitive to changing physical properties, which reduces installation constraints and improves repeatability across operating windows. High accuracy is typical, with premium options available for demanding measurement points. Because the measuring principle does not require inlet or outlet straight runs, Coriolis meters often simplify piping layouts and skid designs while maintaining metrological performance.

Typical applications include batch and continuous dosing, blending, loading and unloading, and mass-based transfer operations for liquids and gases. The ability to report density and temperature supports applications such as concentration control, solvent identification, product interface detection, and quality monitoring in chemical processing, food and beverage production, life sciences, and energy-related services.

Selection and integration focus on matching meter geometry, materials, pressure class, and diagnostics to the process envelope. Considerations include allowable pressure drop, sensitivity to entrained gas or two-phase conditions, external vibration, and cleanability requirements. Modern transmitters provide broad digital connectivity and computed variables that can be mapped directly into control, batching, and asset management systems.

Instrumentation and Controls., an exclusive authorized representative of sales and service for Endress+Hauser.