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Chapter

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Title

Uncertainty of Sine Input Calibration Apparatus for the Air Gauges

Authors

[ 1 ] Instytut Technologii Mechanicznej, Wydział Budowy Maszyn i Zarządzania, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.9] Mechanical engineering

Year of publication

2019

Chapter type

chapter in monograph / paper

Publication language

english

Keywords
EN
  • air gauge
  • dynamic calibration
  • time constant
  • frequency domain
  • uncertainty
Abstract

EN In the paper, dynamic calibration of air gauges with small chambers is discussed. Proposed sine input test rig is described, and its uncertainty is evaluated. Three main sources of uncertainty are identified as a Mechanical Unit, Pneumatic Unit and Digital Unit. Type B uncertainty estimation is considered, and the most difficult to assess sources are pointed out. Namely, it is the fluctuation of the back-pressure due to the airflow inside the air gauge. Thus, it was proposed to estimate the Type A uncertainty through the repetitions of the time constant measurement. The results provided highly satisfactory level of expanded uncertainty ca. 0.001 s. This result is covering all factors of influence on the dynamic calibration result.

Date of online publication

09.05.2019

Pages (from - to)

82 - 94

DOI

10.1007/978-3-030-18682-1_7

URL

https://link.springer.com/chapter/10.1007/978-3-030-18682-1_7

Book

Advances in Manufacturing II. Volume 5 - Metrology and Measurement Systems

Presented on

6th International Scientific-Technical Conference Manufacturing 2019, 19-22.05.2019, Poznan, Poland

Ministry points / chapter

20

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