October 9, 2026
Flow measurement is no longer simply about knowing how much fluid passes through a pipeline.
In modern process plants, flow data is closely connected with production control, material balance, product quality, energy management and custody transfer. When the measured value is used for dosing, batching or commercial settlement, measurement accuracy and repeatability become especially important.
This is where Micro Motion Coriolis technology has become an important option for industrial flow measurement.
Unlike many conventional flow meters that primarily measure volumetric flow, Coriolis meters can directly measure mass flow. Micro Motion Coriolis meters can also provide density and process temperature measurements, allowing one meter to deliver more process information from a single measurement point.
The basic principle is based on the interaction between flowing fluid and vibrating measurement tubes.
Inside the sensor, one or more flow tubes are continuously vibrated. When there is no flow, the tubes vibrate in a predictable pattern.
When the process fluid begins to move through the tubes, Coriolis forces cause the tubes to twist slightly. Sensors detect the resulting phase difference between different points on the vibrating tubes.
The measured phase shift is related to the mass flow rate.
In simplified form:
Fluid flow → Tube vibration → Coriolis effect → Phase shift → Mass flow measurement
Because the measurement is based directly on the mass of the flowing fluid, the meter does not need to calculate mass flow from a separate volumetric flow measurement and density compensation in the same way as many volumetric technologies.
Micro Motion's published measurement principle describes the phase difference between the vibrating tubes as being directly proportional to mass flow.
One of the major advantages of Coriolis technology is that the sensor can provide more than mass flow information.
The vibration characteristics of the measurement tube change according to the mass contained inside the tube. This relationship allows the meter to determine fluid density.
Micro Motion Coriolis meters can therefore provide:
Volume flow can also be calculated using mass flow and measured density.
For process engineers, this means that a single measurement point can provide information useful for flow control, batching, material balance and product quality monitoring.
Micro Motion has developed different Coriolis meter designs for different process requirements rather than using one sensor for every application.
The ELITE Series is positioned as a high-performance Coriolis flow and density measurement platform.
It is designed for applications where measurement performance, repeatability and diagnostics are important. Micro Motion also provides Smart Meter Verification for applicable configurations, allowing meter performance and measurement integrity to be checked without removing the meter from the process.
ELITE meters can be considered for demanding applications including critical process measurement and custody transfer.
The G-Series is an ultracompact Coriolis flow and density meter designed for applications where installation space is limited.
Emerson introduced the G-Series as a compact dual-tube Coriolis design, combining mass flow and density measurement with a smaller physical footprint.
This makes the series worth considering when engineers need Coriolis measurement but have limited installation space.
The F-Series provides compact, drainable Coriolis flow and density measurement for demanding process applications.
Its design is intended for applications where measurement performance and reliable process operation are important.
The H-Series focuses on hygienic applications.
It is designed for sanitary process environments and features a compact, drainable design suitable for cleaning processes. Available configurations include polished stainless-steel wetted materials and hygienic certifications for applicable applications.
Typical industries include food and beverage, pharmaceutical and other sanitary processing environments.
The T-Series uses a straight-tube design with titanium wetted components.
Its straight flow path is designed to support hygienic, clean-in-place and demanding fluid applications. The meter can provide mass flow, density, concentration, volume flow and temperature measurements from one device, depending on configuration.
For highly corrosive applications, the TA-Series uses tantalum for its wetted components.
This design is intended for corrosive services such as acids and bases, where material compatibility is an important part of flow meter selection.
Coriolis measurement can be applied across a wide range of process industries.
Coriolis meters can be used for production measurement, fuel measurement, chemical injection, allocation and custody transfer applications.
The ability to directly measure mass flow makes Coriolis technology useful where accurate material accounting is important.
Chemical plants often handle liquids with different densities, viscosities and compositions.
Coriolis measurement can provide mass flow and density information for dosing, batching and process control.
For corrosive chemicals, specialized designs such as the Micro Motion TA-Series can provide a material option based on tantalum wetted components.
Hygiene, repeatability and product consistency are important in food and beverage processing.
Micro Motion H-Series and T-Series meters are designed for sanitary applications, including CIP and other cleaning requirements.
Coriolis technology is also being used for challenging high-pressure applications.
Micro Motion offers a High Pressure Coriolis Flow Meter designed for applications including chemical injection and hydrogen fueling. Emerson states that the product is designed for operating pressures up to 15,375 psi (1,060 bar), depending on configuration and application conditions.
This type of application demonstrates how Coriolis technology is expanding beyond conventional liquid process measurement.
Coriolis is not automatically the best technology for every pipeline. The selection should depend on the fluid, process conditions, installation and required measurement performance.
However, Coriolis meters have several characteristics that make them attractive for demanding applications:
Direct mass flow measurement
Mass flow is measured directly rather than relying primarily on volumetric flow measurement.
Multi-variable process information
Depending on the meter, mass flow, density, temperature and volume flow can be available from one measurement point.
No moving mechanical parts in the flow sensor
This can help reduce mechanical wear associated with moving components.
Broad fluid compatibility
Coriolis meters can be applied to liquids, gases and, for suitable meter configurations, challenging multiphase or entrained-gas services. Application-specific selection remains important.
Advanced diagnostics
Modern Micro Motion transmitters provide diagnostic functions and connectivity options that can support process monitoring and maintenance.
The sensor is only part of a Coriolis measurement system.
Micro Motion also provides dedicated Coriolis transmitters, including the 5700, 4700, 4200 and 1600 platforms.
For example, the Micro Motion 5700 transmitter provides configurable I/O, embedded data history and diagnostics for applications including custody transfer, proving and safety systems.
Smart Meter Verification is another important part of the Micro Motion ecosystem. It can verify meter performance without interrupting the process and can support diagnostic and audit requirements in applicable applications.
This moves flow measurement beyond simply displaying a flow value toward continuous monitoring of measurement health.
Choosing a Coriolis meter requires more than knowing the pipeline size.
Before selecting a model, collect:
For difficult services, the actual operating range is especially important. A meter that performs well at normal flow may not provide the same performance at very low flow, excessive gas entrainment or unusual process conditions.
The development of Coriolis technology is increasingly focused not only on measurement accuracy but also on measurement integrity, diagnostics, connectivity and process insight.
For process industries, the value of a flow meter is gradually moving beyond a single flow reading.
Reliable mass flow data can support production control. Density information can provide additional insight into product or process conditions. Diagnostics can help identify measurement problems before they affect production.
This combination makes Coriolis technology an important part of modern process instrumentation.
Micro Motion's current portfolio covers general-purpose, compact, hygienic, corrosive, high-pressure and high-performance applications, giving engineers more options when designing or upgrading industrial flow measurement systems.
Coriolis technology has changed the way many process industries approach flow measurement by providing direct mass flow measurement together with additional process information such as density and temperature.
Micro Motion continues to apply this technology across different meter designs, from compact G-Series meters to ELITE high-performance meters, hygienic H-Series and T-Series meters, corrosive-service TA-Series meters and specialized high-pressure solutions.
For a new installation or replacement project, the best meter should be selected according to the fluid, flow range, pressure, temperature, material compatibility, accuracy requirements and process environment.
The goal is not simply to choose the most advanced flow meter, but to select a measurement system that provides reliable data under the actual operating conditions of the process.
