Coriolis flow measurement: Simultaneous measurement of mass flow, density, temperature and viscosity
The Coriolis measuring principle is used in a wide range of different branches of industry, such as the life sciences, chemicals, petrochemicals, oil and gas, food, and – no less importantly – in custody transfer applications. Coriolis flowmeters can measure virtually all fluids: cleaning agents, solvents, fuels, crude oil, vegetable oils, animal fats, latex, silicon oils, alcohol, fruit solutions, toothpaste, vinegar, ketchup, mayonnaise, gases or liquefied gases. Simultaneous measurement of mass flow, density and temperature opens up entirely new perspectives for process control, quality assurance and plant safety.
Coriolis flow measuring principle
Each Coriolis flowmeter has one or more measuring tubes which an exciter causes to oscillate artificially. As soon as the fluid starts to flow in the measuring tube, additional twisting is imposed on this oscillation due to the fluid‘s inertia. Two sensors detect this change of the tube oscillation in time and space as the “phase difference.” This difference is a direct measure of the mass flow.
In addition, the fluid density can also be determined from the oscillation frequency of the measuring tubes. The temperature of the measuring tube is also registered to compensate thermal influences. The process temperature derived from this is available as an additional output signal.
Proline Promass Q for challenging applications
Coriolis flowmeter with superior accuracy for flow and density measurement
Whether in custody transfer applications or when meeting stringent product quality requirements – superior measuring accuracy is essential. Historically, high accuracy levels were only achievable under ideal circumstances, meaning stable process conditions and true single-phase homogeneous fluids. In the real world, however, these ideal conditions don’t often exist. The Promass Q Coriolis flowmeter has been developed exactly for such applications in the oil & gas as well as in the food industry.