Article | REF: R2030 V2

Pressure standards

Author: Pierre OTAL

Publication date: June 10, 2022

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8. Glossary

Balance de pression ou balance manométrique ; Pressure balance or piston gauge

A standard used to materialize pressure from the basic quantities of the SI system. The principle consists in balancing the force generated by the pressure applied to the cross-section of a piston-cylinder assembly with the force due to the local field of gravity acting on the masses resting on the piston head.

Pressure distortion coefficient; Coefficient de déformation

Coefficient associated with a piston-cylinder assembly representing the variation in cross-section due to pressure, expressed in Pa –1 .

Ensemble piston-cylindre ; Piston-cylinder unit

The main metrological element of the manometric balance, the pressure delivered by the standard...

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