Saturday, May 30, 2020, 10:34 AM
Site: Quametec™ Institute of Measurement Technology
Course: Quametec™ Institute of Measurement Technology (QUAMETEC™)
Glossary: QIMT Glossary

Transfer standard

Standard used as an intermediary to compare standards.

Travelling standard

See Standard, travelling.

True value (of a quantity)

The indefinite form rather than the definite form is used in connection with true value, in that there can be many values that are consistent with the definition of a particular quantity.

Uncertainty of measurement

Parameter, associated with the result of a measurement that characterises the dispersion of values that could reasonably be attributed to the measurand. The estimation of uncertainty in accordance with GUM guidelines is usually accepted.

Unit (of measurement)

Particular quantity, defined and adopted by convention, with which other quantities of the same kind are compared in order to express their magnitudes relative to that quantity.

Unit of measurement (derived) coherent

Derived unit of measurement that can be expressed as the product of basic units in powers with the proportionality coefficient 1.

Value (of a measurand), transformed

Value of a measuring signal that represents a given measurand.

Value (of a quantity)

Magnitude of a particular quantity generally expressed as a unit of measurement multiplied by number.

Value, nominal

Rounded or approximate value of a characteristic of a measuring instrument that provides a guide to its use.

Values, derived

Conditions for use intended to keep the metrological characteristics of a measuring instrument specified limits.