PRESSURE DIFFERENCE PICKUP Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: pickup has body with two spaces 3, 4 filled with low-compression electric insulation liquid and with hermetically sealed profiled membranes 1, 2, semiconductor sensing element 5 and bellows 8. Compression spring 9 is positioned between moving cover of bellows and body. Use is made of auxiliary compression spring 12 and auxiliary bellows 11 secured tightly between spaces, and auxiliary compression spring 12 positioned between moving cover of auxiliary bellows 11 and body 10. In this case, crimps of bellows 9, 11 are compressed up to stop. EFFECT: higher measurement results. 1 dwg