Coriolis meters measure the mass flowrate of a stream by making use of the Coriolis effect.
How it Works
Fluid flows through a tube which is forced to vibrate in a harmonic oscillation by an external driver. The tube can be straight or ‘U’ shaped.
The momentum of the fluid causes the already-oscillating tube to vibrate in a slightly different way. This change in the mode of vibration is proportional to the mass flow rate of the fluid flowing through the tube and can be measured with external sensorsSensors are devices that measure physical properties such as methane concentration, temperature, or radiance. For measuring flare efficiency the sensor must be capable of measuring methane and in some cases… Learn more…. The mass flow rate of the fluid can then be determined.
IMAGE TO FOLLOW
Advantages
Good accuracy and repeatability
It does not require strength pipe length upstream / downstream the device location
Direct measure of mass flow and density with a single device
Limitations
High pressure drop at high flow rates
High CAPEX versus other technologies
Size limitation (16” / 400mm largest diameter currently offered)
Can have difficulty measuring the flow rate of low pressure gas
It can be subject to issues with piping stress and vibration
Due to these limitations, it has limited applicability on main flare headers
Go Deeper
Case study
No case study available at this time.
Coriolis (Mass) flow meters introduce an acceleration into a flowing stream and measure mass flow by detecting the resulting change in angular momentum, this is known as a Coriolis effect.
