Dictionary · Instruments
Blank indication
The indication obtained from a phenomenon, body, or substance similar to the one under investigation but for which the quantity of interest is supposed absent or not contributing — the analytical chemist's blank, generalized.
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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
Step response time
The duration between the instant an input quantity is subjected to an abrupt change between two specified constant values and the instant the indication settles within specified limits of its final steady value.
VIM (JCGM 200:2012) 4.23
Measuring instrument
A device used for making measurements, alone or in conjunction with supplementary devices.
VIM (JCGM 200:2012) 3.1
Stability of a measuring instrument
The property of an instrument whereby its metrological properties remain constant in time — quantified by the time taken to drift a stated amount, or the change over a stated time.
VIM (JCGM 200:2012) 4.19
Sensitivity of a measuring system
The quotient of the change in an indication and the corresponding change in the value of the quantity being measured.
VIM (JCGM 200:2012) 4.12
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