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Early Detection of the Wear of Coriolis Flowmeters through In Situ Stiffness Diagnosis

Zhang, Jingqiong, Yan, Yong, Liu, Jingyu, Jukes, Edward (2021) Early Detection of the Wear of Coriolis Flowmeters through In Situ Stiffness Diagnosis. IEEE Transactions on Instrumentation and Measurement, 70 . Article Number 3520310. ISSN 0018-9456. (doi:10.1109/TIM.2021.3091428) (KAR id:88591)

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Official URL:
http://dx.doi.org/10.1109/TIM.2021.3091428

Abstract

Coriolis flowmeters have been widely employed in a variety of industrial applications. There is a potential that the measuring tube of a Coriolis flowmeter may be eroded when it is used to measure abrasive fluid such as slurry flow. However, it is challenging to verify the structural health of the flowmeter without process interruptions or using on-site calibration devices such as meter provers. This paper presents an in-situ structural health monitoring technique through stiffness diagnosis to identify the potential wear occurring on the measuring tube. To measure the frequency response of a Coriolis flowmeter which strongly depends on the structural characteristics of the tube, the tube is not only excited at a resonant frequency but also at two additional off-resonant frequencies. Through digital processing of the drive and sensor signals, the frequency response is obtained and a stiffness related diagnostic parameter (SRDP) is extracted from a Coriolis flowmeter. The proposed stiffness diagnosis technique was experimentally evaluated on a commercial bent-tube Coriolis flowmeter with dilute sand-water slurry flow. The results illustrate that the slight tube erosion is successfully identified when a relative change in SRDP reaches −1%, showing a good capability for an early detection of tube wear. In addition, the outcomes from recalibration with water suggest that, after the erosion occurs, the flowmeter overestimates the mass flowrate and underestimates the flow density.

Item Type: Article
DOI/Identification number: 10.1109/TIM.2021.3091428
Uncontrolled keywords: Coriolis mass flowmeter, erosion, frequency response, slurry flow, tube stiffness, wear detection
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA165 Engineering instruments, meters etc. Industrial instrumentation
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Yong Yan
Date Deposited: 08 Jun 2021 09:38 UTC
Last Modified: 27 Jul 2021 15:48 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/88591 (The current URI for this page, for reference purposes)
Yan, Yong: https://orcid.org/0000-0001-7135-5456
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