This article analyzes the development status of zero error calibration methods for magnetic ring settlement and water level detection rulers,and studies the characteristics of existing calibration devices and methods for zero error of such instruments.Based on the aforementioned research and the actual use status of magnetic ring settlement and water level detection rulers,this paper proposes a zero error calibration method and develops a dedicated zero calibration device for this type of measuring instrument,with displacement sensors as the main standard.Finally,the uncertainty evaluation shows that the development of the calibration device can meet the requirements for zero error traceability of relevant measuring instruments.
displacement sensormagnetic ring settlement and water level detection rulerzero position errorcalibration device
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