Acta Mechanica Slovaca 2025, 29(4):28-34 | DOI: 10.21496/ams.2026.001

Calibration of Pressure Gauges

Dmytro Malakhov1, *, Tatiana Kelemenová1
Technical University of Kosice, Faculty of Mechanical Engineering, Letna 9, 04200 Kosice, Slovakia

The aim of this work is to verify and calibrate a mechanical Bourdon-tube pressure gauge for which the manufacturer provides only basic specifications. Before such instruments are integrated into industrial or laboratory systems, additional information about their behaviour-such as linearity, systematic error, hysteresis, and measurement uncertainty-is required to ensure reliable operation and compliance with metrological standards. This paper presents a practical methodology for the rapid identification of the key metrological parameters of a pressure gauge. The procedure uses a pneumatic pressure source and a high-accuracy reference gauge to compare the indicated and reference pressures over a defined range during increasing and decreasing pressure cycles. The method enables the evaluation of accuracy, repeatability, and stability, and includes an uncertainty assessment based on the GUM approach. The presented methodology is suitable for input inspection and routine verification, providing a reliable basis for determining whether a pressure gauge is appropriate for its intended application.

Keywords: pressure gauge calibration; Bourdon tube; systematic error; measurement uncertainty; linearity; hysteresis.

Received: December 9, 2025; Revised: December 30, 2025; Accepted: January 12, 2026; Published: December 15, 2025  Show citation

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Malakhov, D., & Kelemenová, T. (2025). Calibration of Pressure Gauges. Acta Mechanica Slovaca, 29(4), 28-34. doi: 10.21496/ams.2026.001
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