MICROBAROGRAPH Russian patent published in 2009 - IPC G01L7/12 

FIELD: measurement equipment.

SUBSTANCE: invention refers to measurement equipment and can be used in recording devices of atmospheric pressure fluctuations generated with natural and artificial sources. Microbarograph includes horizontal compensated pendulum with two inert masses mutually spaced relative to axis of oscillations, one of which is solid, and the other one is hollow and has volume and mass, which is bigger and less accordingly than that of solid; at that, for compensating the pendulum, length of arm of hollow arm is more than arm of solid mass with converter of oscillations of pendulum system to electric signal and electric signal amplifier. At that, to big hollow mass there introduced is small air capillary, and the whole pendulum system with converter is placed in volume container contacting external environment through big air capillary.

EFFECT: designing microbarograph consisting in selective reception and conversion of atmospheric pressure vibrations of certain frequency band.

1 dwg