Study of the extrapolation error of force Transducer curve fitting equation

Abstract

The calibration laboratories are often confronted with the problem that the force transducers cannot be calibrated at full range or the laboratory is unable to calibrate the range less than 10% of the force transducer capacity due to the unavailability of the facilities to do so. Sometimes these laboratories use curve fitting extrapolation to estimate and predict the behavior of force transducer in these ranges. This research deals with the study of extrapolation errors for force transducers to know and estimate what is ignored or lost in the accuracy of measurement when using extrapolation in the calibration of force transducers to cover the range less than 10% of the force transducer capacity and also in the range of 50% to 100% of the capacity. The results of this study showed that the magnitude of the extrapolation error is very close to the magnitude of the reproducibility error of the available ranges to be calibrated in the laboratory.