High pressure piston gauges: mathematical modeling and realization of piston pairs with back pressure

V.M. Borovkov

Al’manac of Modern Metrology № 1 (17) 2019, pages 109–115

Piston pairs with an upper limit of reproducible pressures of 1.6 GPa, designed to work with glycerin glycol or silicone fluids are considered. The barometric dependences of the piston fall speed and effective clearance are given.

Key words: cylinder channel profile, clearance, effective gap, pressure-viscosity coefficient, fluid compressibility, elastic moduli, effective area, Multibar, State special standard of pressure unit GET 43-73, State primary standard of pressure unit and effective area of piston pairs GET 43-2013.

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