State primary standard of the unit of overpressure in the range of static pressure from 10 to 1600 MPa and in the range of impulse pressure

Abstract

The necessity and relevance of precision pulse pressure measurements in industry (high-speed technological processes) and transport (existing and new types of engines) is shown. The device, the principle of operation and the result of metrological studies of the State Primary Standard of the unit of overpressure in the range of static pressure from 10 to 1600 MPa and in the range of pulse pressure from 1 to 1200 MPa and the effective area of piston pairs of piston pressure gauges in the range from 0.05 to 1 cm2 GET 43-2022 are presented. The GET 43-2022 includes hydraulic and pneumatic installations, as well as an ultra-high pressure valve designed to compare installations from the GET 43-2022 composition working with different standard fl uids in the range of 250-1200 MPa. The reproduction range of the pulse pressure unit GET 43-2022 is 1-1200 MPa. The method of reproducing the pulse pressure unit in liquid and gas media using hydraulic and pneumatic installations is described. The metrological characteristics of GET 43-2022 are investigated, the budget of measurement uncertainty is calculated when reproducing the pulse pressure unit. The results obtained make it possible to meet the needs of the development of a fl eet of working standards for pulse pressure measuring instruments traceable to GET 43-2022.