Mr. Yu Yang Profile

Yu Yang

at National Institute of Metrology, China

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Proceedings Article | 19 November 2021 Paper

Research on electronic inclinometer calibration method and uncertainty budget based on GUM method

Yu Yang, Wei Zou, Fan Wang

Proceedings Volume 12059, 1205908 (2021) https://doi.org/10.1117/12.2611250

KEYWORDS: Calibration, Metrology, Uncertainty analysis

Read Abstract +

An electronic inclinometer can measure the angle between faces or between a face and a horizontal plane. In recent years, electronic inclinometers have played an important role in bridge monitoring, medical devices calibration, and aerospace, with a wider measuring range and higher accuracy. However, there are few studies on the calibration methods and uncertainty budget of the electronic inclinometer. In this paper, the traceability chain, calibration environment, measurement standard, and calibration method are investigated to provide a direct measurement method to calibrate the indication error of the electronic inclinometer by using the dividing head as a standard angle generator and a special fixture. A mathematical model is established, and the uncertainty budget is performed for the calibration result of the indication error. The result shows that the ratio of the expanded uncertainty of the electronic inclinometer to the indication error is less than 1»3. Thus, a feasible calibration method for the indication error of the electronic inclinometer is obtained.

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