Miscalibrated

Miscalibrated is an adjective used to describe an instrument, device, or system whose calibration is out of specification, such that its measurements or readings are biased relative to a recognized reference standard. Calibration is the process of adjusting a device to align its output with known values, ensuring traceability to standards and reducing measurement uncertainty.

Miscalibration can result from drift over time, environmental effects, wear, manufacturing tolerances, improper setup, software errors, or human mistakes. Indicators include systematic bias, inconsistent results, or readings that consistently deviate in a known direction.

In practical settings, miscalibration can compromise data quality, affect safety, and lead to incorrect decisions. It is a concern across fields such as laboratory measurement, medical devices, manufacturing, and navigation.

Detection and correction typically involve recalibration against certified standards, maintenance schedules, automated drift monitoring, cross-checks with independent measurements, and validation experiments. When calibration cannot be restored, replacement or redesign may be required.