Uncertainty

Uncertainty is a property of a measurement result that defines the range of probable values of the measurand

Uncertainty budget

The systematic description of known uncertainties relevant to specific measurements or types of measurements, categorized by type of measurement, range of measurement, and/or other applicable measurement criteria.

UUC, UUT

The unit under calibration or the unit under test – the instrument being calibrated.

Validation

Substantiation by examination and provision of objective evidence that verified processes, methods, and/or procedures are fit for their intended use.

Verification

Confirmation by examination and provision of objective evidence that specified requirements have been fulfilled.

VIM

An acronym commonly used to identify the ISO International Vocabulary of Basic and General Terms in Metrology.

Work Instruction

In a quality management system, a work instruction defines the detailed steps necessary to carry out a procedure. Work instructions are used only where they are needed to ensure the quality of the product or service.

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