Dictionary · Instruments
Indicating measuring instrument
A measuring instrument providing an output signal carrying information about the value of the quantity being measured — voltmeters, thermometers, balances.
Related terms
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Material measure
A device reproducing or supplying, in a permanent manner during its use, quantities of given values — gauge blocks, standard weights, volumetric flasks, standard resistors.
VIM (JCGM 200:2012) 3.6
Range of a nominal indication interval
The absolute difference between the extreme values of a nominal indication interval — 200 V for the −100 V to +100 V setting.
VIM (JCGM 200:2012) 4.5
Rated operating condition
An operating condition that must be fulfilled during measurement for an instrument to perform as designed — the environmental and use envelope the specs assume.
VIM (JCGM 200:2012) 4.9
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
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
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