A new calibration method and device for certified flow measurements with laser velocimetry

Katsuaki Shirai, Lars Büttner, Jurgen Czarske, Carsten Kykal

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We aim to establish traceability at calibration and hence to en- able a certified flow measurement with a calibrated measure- ment system. A new calibration method is presented for laser velocimetry. We develop a simple, unique method which estab- lishes traceability of its uncertainty. The device is transportable and calibratable by any users for their own instruments on-site. Our new method requires only a rotating disk and a precision lin- ear stage providing positional information. In former calibration methods, the uncertainty of the orbit radius of a scattering object was dominant due to the difficulty of accessing the true center of the rotation. The diffuculty was solved in our new method. The new method provides an accurate estimate of the orbit radius and hence the velocity of the calibration object through a linear re- gression. The calibration constant is obtained even without the need of direct access to the absolute value of the rotation radius. The uncertainty budget is examined throughout the calibration procedure. The traceability chain is established once the trace- abilities are maintained to the translation stage and the motor used for rotating the calibration disk. The new method has been realized with three different calibration setups and their perfor- mances were investigated. We demonstrate that the new calibra- tion method can achieve uncertainty down to 0.1 %.

本文言語English
ホスト出版物のタイトルASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
ページ77-84
ページ数8
DOI
出版ステータスPublished - 2012
外部発表はい
イベントASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
継続期間: 2012 11 92012 11 15

出版物シリーズ

名前ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
10

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
国/地域United States
CityHouston, TX
Period12/11/912/11/15

ASJC Scopus subject areas

  • 機械工学

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