GRAVIMETER Russian patent published in 2009 - IPC G01V7/02 

FIELD: physics, measuring.

SUBSTANCE: invention concerns geophysical instrument making and can be used for recording of the relative changes of acceleration due to gravity by search of minerals, examination of the tidal phenomena and harbingers of earthquakes. According to the invention, the gravimeter contains the case, an assembly framework in which on hairlines the measuring framework with suspended in it on hairlines horizontally located core with a plate on its one extremity is suspended, the metal pendulum, which one extremity is rigidly joined to the free extremity of a core, and another - with the metal screen of the photoelectric transformer, ring put on a metal pendulum and joined to hairlines of measuring framework, band and measuring springs, basic and additional astatising springs, a power unit connected to a light-emitting diode of the photoelectric transformer, the registrar joined to current amplifier, connected to differential photoelectric cell of the photoelectric transformer, thus the ring is erected on metal pendulum apart ℓ from centre of gravity of the metal pendulum, the spotted mathematical expression opened in the description. It provides gravimeter temperature compensation.

EFFECT: increase of measuring accuracy.

1 dwg