access icon openaccess In-situ calibration technology of liquid level with precise laser ranging

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 15/10/2018, Accepted 09/01/2019, Published 25/03/2019

Here, in order to calibrate the magnetostrictive liquid-level meter in situ, a set of in-situ calibration device for magnetostrictive liquid-level meter is designed. The structure and working principle of the device are described, and the experimental test and error analysis are carried out for the parts of the in-situ calibration device. Finally, according to the modern instrument and error theory, the accuracy of the calibration device is assessed, and the field calibration experiment of magnetostrictive liquid level gauge is carried out. The theoretical analysis and field experiment results show that the calibrated device can meet the in-situ calibration requirements of the magnetostrictive liquid-level meter with a range of 0–6 m and a precision of 1 mm.

Inspec keywords: optical sensors; magnetostrictive devices; level meters; magnetic sensors; calibration; measurement errors; laser ranging; level measurement; magnetic field measurement

Other keywords: distance 1.0 mm; distance 0.0 m to 6.0 m; error analysis; field calibration experiment; magnetostrictive liquid level gauge; magnetostrictive liquid-level meter; calibrated device requirements; laser ranging

Subjects: Measurement standards and calibration; Level, flow and volume measurement; Measurement of basic electric and magnetic variables; Measurement and error theory; Sensing and detecting devices; Spatial variables measurement; Magnetic variables measurement; Metrological applications of lasers; Measurement standards and calibration; Sensing devices and transducers; Metrological applications of lasers; Measurement theory; Magneto-acoustic, magnetoresistive, magnetostrictive and magnetostatic wave devices; Spatial variables measurement; Display, recording and indicating instruments

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