Digital Coriolis flowmeter works in two-phase flow

Invensys Foxboro's (Foxboro, MA) new CFT50 Digital Coriolis Flowmeter is reported to be unique because it continues to operate during two-phase flow. CFT50 features patented technology to enable uninterrupted operation in batch applications starting with empty flow-tube conditions. CFT50 is designed to control all aspects of the Coriolis meter for precise measurement in difficult-to-measure app...

By Staff January 1, 2003

A 2002 EDITORS’ CHOICE AWARDS WINNER

INSTRUMENTATION & PROCESS SENSORS

Invensys Foxboro’s (Foxboro, MA) new CFT50 Digital Coriolis Flowmeter is reported to be unique because it continues to operate during two-phase flow. CFT50 features patented technology to enable uninterrupted operation in batch applications starting with empty flow-tube conditions. CFT50 is designed to control all aspects of the Coriolis meter for precise measurement in difficult-to-measure applications.

Traditionally, Coriolis meters couldn’t handle two-phase flows, such as liquids with entrained gases. Such conditions adversely affect sensor performance in ordinary Coriolis meters by creating erratic vibration of the flow tubes. CFT50 minimizes the impact of entrained air by using a dual digital processing system that improves meter control throughout all stages of void fraction operation.

CFT50 offers precise and reliable measurement for demanding applications at low cost of ownership, according to Michael Jost, Invensys’ measurement and instrumentation division vp.

”Coriolis meters provide direct measurement of mass flow, which is highly desirable in applications requiring precise, accurate measurement, particularly for difficult-to-meter materials, such as slurries and inhomogeneous fluids. The traditional problem has been the impact of entrained air, which can interrupt measurement for tens of seconds and stall or shutdown the flow tube,” says Mr. Jost.

www.foxboro.com/m&i

Operates with two-phase (air/gas) flow

Performance in batch applications starting with empty flow tube conditions

Handles difficult-to-meter materials including slurries

Reduces operating costs

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