recalibrate

Recalibrate is a verb meaning to calibrate again or to adjust a measurement device, system, or model to restore or improve accuracy after drift, change, or wear.

Calibration is the process of comparing instrument readings with a known standard and adjusting to align. Recalibration is performed when drift occurs, when the instrument is redesigned, or when standards change; it is often required to maintain traceability to SI units and to ensure measurement reliability over time.

Applications for recalibration include scientific instruments such as thermometers, scales, pressure sensors, spectrometers, and analytical devices; in software and algorithms for sensor fusion or camera color calibration; and in industrial control, robotics, automotive, aerospace, and medical devices. Recalibration may address changes in environmental conditions, component aging, or altered operating ranges.

The recalibration process typically involves selecting a reference standard, measuring instrument outputs, computing adjustments, applying them, and validating results with independent checks. Documentation includes calibration data, uncertainty estimates, stated errors, and the date of the next due calibration. Standards and procedures for recalibration are often governed by metrology guidelines and may require traceability, documented uncertainties, and adherence to organizational or regulatory requirements.

Etymology: The term combines re- meaning again with calibrate, deriving from Latin roots related to standardization and measurement. In practice, recalibrate denotes returning a device or model to its correct or acceptable level of accuracy after change or drift.

See also: Calibration, drift, traceability, metrology.