Implications of Location of Strain Gauges and Excitation Voltage Over the Metrological Performance of Trapezoidal-Shaped Force Transducer

The present study discusses the effect of location of strain gauges and excitation voltage of the digital indicator over the metrological characterization of the force transducer. A trapezoidal-shaped force transducer of nominal capacity 50 kN has been investigated in which two locations for mounting the strain gauges have been identified based on FEA. The evaluation of metrological characteristics has been based on ISO 376: 2011. The relative deviations due to repeatability, reproducibility, interpolation, and expanded uncertainty of measurement has been reported in this work. A comparative analysis has been performed between the observations recorded at 5 V and 10 V excitation voltages. Results show that the effect of increased excitation voltage of the digital indicator is insignificant over the uncertainty of measurement of the force transducer. The location of strain gauges affects the sensitivity of the transducer, significantly.