A measured value is an absolute value that refers to the physical quantity of a measuring object to be measured. Such a measured value is determined by a measuring device during the measurement and consists of a numerical value and the physical unit, for example 565 Ohm or 0.334 mA or 2.5 µs. The measured value is dealt with in DIN 1319.
Due to the measurement inaccuracy, the inaccuracy of the measured value display, the interpolation ofdigital measured values and the quality classes of the measuring instruments, the measured value deviates from the actual value.
With analog measuring instruments, the measured value is determined by the pointer display; with digital measuring instruments, the measured value corresponds to the displayed numerical value. All units listed in the international system of units can be measured as physical units.
Since measured values can assume several powers of ten - for example, the capacitances of capacitors can lie between farad and picofarad - the digital measured values are supplemented by powers of ten or the corresponding prefix; in the case of analog measured value displays, the unit of magnitude is identified by the switchable measuring range.