Dictionary · Instruments
Instrument bias
The average of replicate indications minus a reference quantity value — the instrument-level counterpart of measurement bias.
Related terms
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Measuring chain
The series of elements of a measuring system constituting a single path of the measurement signal from sensor to output element.
VIM (JCGM 200:2012) 3.10
Reference operating condition
An operating condition prescribed for evaluating the performance of an instrument or for comparing results — the 23 °C ± 1 °C line at the top of a datasheet.
VIM (JCGM 200:2012) 4.11
Variation due to an influence quantity
The difference in indication, or in the supplied quantity value of a material measure, when an influence quantity assumes two different specified values — the temperature coefficient on a datasheet is one of these.
VIM (JCGM 200:2012) 4.22
Dead band
The maximum interval through which the value of the quantity being measured can be changed in both directions without producing a detectable change in indication — hysteresis's operational signature.
VIM (JCGM 200:2012) 4.17
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.
VIM (JCGM 200:2012) 4.2
Resolution of a displaying device
The smallest difference between displayed indications that can be meaningfully distinguished — for a digital display, one count of the least significant digit.
VIM (JCGM 200:2012) 4.15