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Deviation of characteristic curve
Hysteresis
The hysteresis is the difference of the output value for a fixed measured value under increasing or decreasing pressure.
Deviation from the linear
The deviation from the linear is the amount of deviation from the characteristic curve of a reference line.
Reproducibility
The reproducibility defines the largest deviation of the output value for repeated runs at the measured value.
Temperature error
The temperature error shows the maximum deviation of the characteristic curve from the ideal case - for measurements taken at different temperatures - within the compensated sector. The temperature error is normally given as a value applicable to the entire compensated sector and not per 10K or 1K.
Deviation of the characteristic curve in accordance with IEC 770
This value defines the maximum overall error in accordance with IEC 770, composed of non-linearity, hysteresis and reproducibility in keeping with the boundary setting, i.e. the deviation of the initial and final values from the straight line.
As compared with the initial value setting or BFSL (best fit straight line), this definition gives the largest characteristic-curve deviation, but it is the easiest method for the user to understand. When accuracy details are given in data sheets, therefore, the error definition must also be specified. A characteristic-curve deviation of 0.5% FSO (full scale output) in keeping with the boundary setting method roughly corresponds to a BFSL deviation of 0.25%.
