Micro Motion ELITE Entrained Gas
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Micro Motion® ELITE® Coriolis Technology Unparalleled performance in two-phase flow conditions

“Entrained gas in my process reduces measurement accuracy and my profitability.” Two-phase flow (or entrained gas) can cause uncertainties and variations that reduce profitability due to inaccurate accounting of received or dispensed fluids, measurement of feeds, blends and additives, and even damaged equipment. Although installation best practices can eliminate or reduce entrained gas, if you have low levels of entrained gas, ® Micro Motion ELITE Coriolis flowmeters provide the best performance on the market. What if you could … Maintain accuracy and repeatability for fluids with gas...

How does entrained gas affect a process? Entrained gas (also known as two-phase or multi-phase flow) is caused by: Bubble Flow Continuous, evenly distributed bubbles entrained in a fluid • Intentional air in whipped cream, butter, beer or shampoo • Emulsions that capture gases • Air in viscous fluids Slug Flow Periodic coalesced bubbles usually caused by process upsets • Natural gas slugs • Leaks in pump suctions or faulty seals • Long fluid stream drops into tanks • Fluid flashing and cavitation conditions Empty-Full-Empty Batching Precise liquid-to-gas interface • Truck loading and...

Coriolis Flowmeter Best Practices for Entrained Gas Although the best way to improve your process is to remove all sources of entrained gas, ELITE Coriolis flowmeters deliver unparalleled performance in two-phase flow conditions. For all applications, the following guidelines minimize the uncertainity contribution of entrained air: METER SIZE Size the Coriolis flowmeter to operate at the highest flow velocity possible, at the upper end of its flow range to keep the fluid well mixed. To ensure adequate mixing, the meter should be operated at 30% or higher of the nominal flow, if possible....

Accurate Repeatable Dependable Micro Motion ELITE Coriolis Technology delivers Unparalleled performance in two-phase flow applications For two-phase flow, the best measurement is provided by dual-tube sensors with a low tube frequency, such as Micro Motion ELITE Coriolis meters Micro Motion unmatched MVDTM transmitter technology is the superior choice for two-phase flow applications If a sensor with high tube frequency is used, the two-phase mixture does not vibrate directly with the flow tube, and results in large measurement errors. When entrained gas is present, the transmitter removes...

world-leading Micro Motion Coriolis flow and density technology setS the standard for reliable, repeatable, high performance measurement Emerson’s Micro Motion devices are known globally in over 85 countries for quality, reliability, application expertise, and support not available elsewhere. ©2013 Micro Motion, Inc. All rights reserved. The Emerson logo is a trademark and service mark of Emerson Electric Co. Micro Motion, ELITE, ProLink, MVD and MVD Direct Connect marks are marks of one of the Emerson Process Management family of companies. All other marks are property of their respective...