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Functional parameters of sensors for the extended cross-float method

Brzozowski Adam, Szewczyk Roman, Gazda Piotr, Nowicki Michał

Metrology and Measurement Systems

2024

Vol. 31, nr 4

863--873

This study enables justified selection of suitable sensors for the extended cross-float method for the calibration of piston gauges. Three sensor types were tested: a triangulation laser sensor, a capacitive sensor, and a high-precision accelerometer. The extended cross-float method is employed to avoid determining the equilibrium point between interconnected manometers during piston gauge calibration, assessing the fall rate and displacement of the piston. Thus, this makes the parameters above the most relevant and crucial for the mentioned method. The performance of each sensor was evaluated under identical load-pressure conditions to ascertain the accuracy in measuring piston displacement and fall rate. The laser sensor demonstrated the highest measurement precision, while the capacitive sensor effectively smoothed data, mitigating the impact of surface irregularities. Despite its ease of use and installation, the accelerometer showed notable data noise and less accurate results than the other sensors. These findings provide a comparative analysis of sensor performance, highlighting their respective advantages and limitations in the context of high-precision pressure measurement applications.