Dictionary · Instruments
Instrumental measurement uncertainty
The component of measurement uncertainty arising from the instrument or system in use, typically obtained from its calibration.
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Measuring system
One or more measuring instruments and often other devices, assembled and adapted to give measured values within specified intervals for quantities of specified kinds.
VIM (JCGM 200:2012) 3.2
Steady-state operating condition
An operating condition under which the relation established by calibration remains valid even though the measurand varies with time.
VIM (JCGM 200:2012) 4.8
Selectivity of a measuring system
The property whereby the system provides measured values for one or more measurands that are independent of other measurands or influence quantities.
VIM (JCGM 200:2012) 4.13
Zero error
The datum measurement error when the specified measured value is zero.
VIM (JCGM 200:2012) 4.28
Resolution
The smallest change in the quantity being measured that causes a perceptible change in the corresponding indication. Digital resolution contributes a rectangular uncertainty component of (δ/2)/√3.
VIM (JCGM 200:2012) 4.14
Displaying measuring instrument
An indicating instrument whose output signal is presented in visual form.
VIM (JCGM 200:2012) 3.4