Dynamic Offset Correction of Electromagnetic Flow Meters

Linnert M, Mariager S, Rupitsch S, Lerch R (2018)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2018

Pages Range: 674 - 679

Conference Proceedings Title: 2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2018) Proceedings

Event location: Houston US

ISBN: 978-1-5386-2222-3

DOI: 10.1109/I2MTC.2018.8409600

Abstract

This contribution addresses the electrochemical voltage

drift of electromagnetic flow meters. We will extend the

conventional discrete time alternating field method to continuous

operation. A Kalman filter, based on a state space model of the

sensor, was developed to separate the flow-proportional signal

from the noisy voltage drift of the electrodes. The new algorithm

allows to process flow information rarely used today, i.e., the

electrode voltage during times of stable magnetic field. Thereby

a lower energy consumption and an increased accuracy can

be achieved. Compared to conventional signal processing, the

performance of the new method is far more independent of

the transient behavior of the actual flow. Measurements show

a comparable accuracy, but with a significantly reduced energy

demand. Off-line signal processing let expect a theoretical power

reduction factor around 150.

Authors with CRIS profile

Michael Linnert Lehrstuhl für Autonome Systeme und Mechatronik Stefan Rupitsch Lehrstuhl für Autonome Systeme und Mechatronik Reinhard Lerch Lehrstuhl für Autonome Systeme und Mechatronik

Involved external institutions

Endress+Hauser Flowtec AG CH Switzerland (CH)

How to cite

APA:

Linnert, M., Mariager, S., Rupitsch, S., & Lerch, R. (2018). Dynamic Offset Correction of Electromagnetic Flow Meters. In IEEE (Eds.), 2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2018) Proceedings (pp. 674 - 679). Houston, US.

MLA:

Linnert, Michael, et al. "Dynamic Offset Correction of Electromagnetic Flow Meters." Proceedings of the 2018 IEEE International Instrumentation & Measurement Technology Conference, Houston Ed. IEEE, 2018. 674 - 679.

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