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Design optimization of differential air pressure sensor calibration setup for sensitivity minimization to thermal gradient
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
2016 (English)In: 2015 IEEE 12th International Conference on Electronic Measurement and Instruments, ICEMI 2015, IEEE conference proceedings, 2016, 7494452Conference paper, Published paper (Refereed)
Abstract [en]

This paper focuses on the thermal stability of a high performance, low-range calibration setup for differential airpressure sensors. The setup is a dual parallel chamber design with the full range of ±320 Pa, which can be translated to a temperature mismatch of only about 0.93oC between the chambers. Due to the limitations of existing temperature measurement technology, we propose a finite element model(FEM) analysis to study the effect of thermal gradient on the calibration setup. The model setup includes the dual parallel chamber design inside a conventional climate chamber. From the conducted analysis we observe that, due to the non-ideal heat distribution inside the climate chamber, the calibration setup can experience an error of more than 20 % of full range.To minimize this error, we propose an optimized dual cascaded chamber calibration setup design and verify its thermal performance under the same environmental setup. The results show that the proposed design reduces the error, due to thermal gradient, down to 1.8 % of full range. In conclusion it is also discussed that the proposed design reduces error sources related to its mechanical complexity. Future work is proposed on the design and implementation of the optimized design.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2016. 7494452
Keyword [en]
Actuators, Calibration, Electronics, Mechanical factors, Temperature measurement
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-26532DOI: 10.1109/ICEMI.2015.7494452Scopus ID: 2-s2.0-84978234737Local ID: STCISBN: 978-1-4799-7071-1 (print)OAI: oai:DiVA.org:miun-26532DiVA: diva2:882997
Conference
2th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2015; Qingdao; China; 16 July 2015 through 18 July 2015; Category numberCFPI533C-PRT; Code 122296
Available from: 2015-12-16 Created: 2015-12-16 Last updated: 2016-12-23Bibliographically approved
In thesis
1. Reference setup for characterization and calibration of low-range differential pressure sensors
Open this publication in new window or tab >>Reference setup for characterization and calibration of low-range differential pressure sensors
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis, a reference setup for the characterization and calibration of low range differential pressure sensors is presented. The setup utilizes the principle of ideal gas law and actuates on the volume for accurate reference pressure inputs for the calibration process. The error sources for the proposed setup are analysed and an error propagation modelis presented. The range of the setup is ±320 Pa, with the resolution of 0.001% of full scale. The verified sensitivity of the setup is 0.032 Pa. A complete characterization of a high performance differential pressure transducer is conducted as a test case study for the performance analysis of the proposed setup. During these experiments the sensitivity of the calibration setup to the thermal gradient is observed. To this end, the effects of thermal gradient on the transient response of the setup are also studied, utilizing a comparative experimental study. From the presented experimental study it is concluded that the thermal gradient can cause the system to remain in transient state for at least 96 hours. To reduce this effect, a mechanical design optimization is proposed and a finite element model is presented to be studied in comparison to its preceding design for its thermal performance. From the results it is concluded that the optimized design can reduce the transient time of the measurement system due to thermal gradient, by 11 times. Future work is also proposed to further investigate the optimized model for implementation purposes.

Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2015. 67 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 115
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-26528 (URN)STC (Local ID)978-91-88025-09-8 (ISBN)STC (Archive number)STC (OAI)
Presentation
2015-10-08, O102, 13:15 (English)
Supervisors
Available from: 2015-12-16 Created: 2015-12-16 Last updated: 2017-03-02Bibliographically approved
2. Method of torque measurement based on volumetric strain
Open this publication in new window or tab >>Method of torque measurement based on volumetric strain
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2016. 122 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 249
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-29722 (URN)STC (Local ID)978-91-88025-76-0 (ISBN)STC (Archive number)STC (OAI)
Public defence
2016-10-21, M102, Sundsvall, 10:15 (English)
Supervisors
Note

Vid tidpunkten för disputationen var följande delarbeten opublicerade: delarbete 1 accepterat, delarbete 5 accepterat.

At the time of the doctoral defence the following papers were unpublished: paper 1 accepted, paper 5 accepted.

Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2017-06-30Bibliographically approved

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Citation style
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