Inspection
Work Planning
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The degree to which a measured, calculated or reported value agrees with the true or accepted reference value.
Accuracy is the closeness of agreement between a measured, calculated or estimated value and the true, accepted or reference value. In engineering, accuracy describes how correctly a measurement or data value represents reality and is influenced by measurement methods, instrumentation, calibration and data quality.
Accurate engineering data is fundamental to sound decision-making, safe operation and effective asset management. Poor accuracy can result in incorrect engineering assessments, unreliable analytics, unnecessary maintenance activities or unsafe operating decisions.
Accuracy is a fundamental characteristic of measurement quality and forms one component of overall data quality. It is supported through calibration, validation and verification activities. Accuracy should be distinguished from precision, which describes repeatability rather than correctness.
Accuracy is often confused with precision. A measurement can be highly precise (repeatable) while still being inaccurate if it is consistently offset from the true value.
Instrument calibration; Process measurements; Laser scanning and dimensional surveys; Asset information validation; Data quality assessment; Digital twin verification.
A pressure transmitter measuring within ±0.25% of its calibrated value.; A laser scan with positional accuracy of ±2 mm.; Asset attribute values verified against engineering documentation.; Temperature measurements validated against calibrated reference instruments.
ISO 5725
VisualAIM connects glossary concepts to the asset records, inspection histories, and workflows they describe.
