Dictionary · Instruments
Measuring transducer
A device, used in measurement, that provides an output quantity having a specified relation to the input quantity — a thermocouple, a load cell, a pressure-to-current converter.
Related terms
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Discrimination threshold
The largest change in the value of the quantity being measured that causes no detectable change in the corresponding indication — stickiness quantified.
VIM (JCGM 200:2012) 4.16
Limiting operating condition
An extreme operating condition an instrument is required to withstand without damage and without degrading specified properties when subsequently operated under rated conditions — survival limits, not working limits.
VIM (JCGM 200:2012) 4.10
Indication interval
The set of quantity values bounded by the extreme possible indications.
VIM (JCGM 200:2012) 4.3
Null measurement uncertainty
The measurement uncertainty when the specified measured value is zero — what limits how confidently a null or tare reading can be trusted.
VIM (JCGM 200:2012) 4.29
Nominal indication interval
The set of values, bounded by rounded or approximate extreme indications, obtainable with a particular setting of the controls and used to designate that setting — the "0–100 V range" on a meter switch.
VIM (JCGM 200:2012) 4.4
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