GAS-LIQUID GRAVIMETER Russian patent published in 2006 - IPC G01V7/00 

FIELD: geophysics.

SUBSTANCE: gravimeter comprises mercury column that is balanced by the pressure of gas inside the closed vessel and moves vertically when the gravity changes and capacitive transducer that is used for recording the changes. The inner sides of the bottom parts of the vessels within the range of mercury level displacements is made of concentric spheres whose center is located at the point of the suspension of the plate of the capacitive indicator of the mercury level in the top vessel. The bottom vessel receives the thermal compensator that changes its volume in accordance with the heat expansion of gas so that the pressure of gas remains constant. The actuator of the heat compensator is the thermosensitive member made of a closed vessel filled with the heat compensating liquid. The top base of the vessel is provided with the bellows having movable base secured to the base of the larger bellows that is the top base of the vessel. Two additional spaces filled with the heat compensating liquid are connected with the vessel. The additional spaces are in a heat contact with the mercury column in the connecting pipe and bottom vessel, respectively.

EFFECT: expanded functional capabilities.

2 dwg