Advances in self-validating instrumentation

M. Henry, M. Duta

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

3 Citations (Scopus)


This paper provides an overview into recent developments in self-validating sensors. This concept assumes the availability of internal computing power for self-diagnostics, and of digital communications to convey measurement and diagnostic data. A generic set of metrics are proposed for describing measurement quality, including online uncertainty. A SEVA instrument, based on the Coriolis mass flow meter is described; its ability to detect and compensate for the effects of two-phase flow has been implemented in a commercial meter. SEVA has been incorporated into a British Standard, which is currently being extended. Other related standardisation efforts include work by the European user organisations WIB and NAMUR, who are collaborating on an initiative to develop a common framework for describing sensor diagnostics on-line. Comparison with the SEVA Coriolis meter show some of the limitations of the WIB approach. Recent theoretical developments in SEVA include a simple technique for combining the outputs of redundant SEVA sensors for consistency checking and the calculation of a combined best estimate.
Original languageEnglish
Title of host publication10th IMEKO TC7 Symposium on Advances of Measurement Science 2004
PublisherCurran Associates inc.
Number of pages6
ISBN (Print)978-1-63439-188-7
Publication statusPublished - 2004
Externally publishedYes
EventIMEKO TC7 Symposium on Advances of Measurement Science 2004 - St. Petersburg, Russian Federation
Duration: 30 Jun 20042 Jul 2004
Conference number: 10


ConferenceIMEKO TC7 Symposium on Advances of Measurement Science 2004
Country/TerritoryRussian Federation
CitySt. Petersburg


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