GRAVIMETER

The invention relates to a gravimeter measuring the variation of gravitational acceleration associated with Earth, with applications in geophysics. According to the invention, the gravimeter comprises an electronic system (A) achieving electromagnetic levitation of a body (2) of a mass m, and which consists of an electromagnet (1), a magnetic sensor (3) with Hall effect, an electronic circuit (D) for measuring the duration of control impulses of average current through the electromagnet (1), a thermostating system (B), a multi-layer magnetic shielding system (C) and a data recording electronic block (E), the gravitational acceleration being evaluated by measuring the duration of impulses within the electronic circuit (D) which ensures the electromagnetic levitation of the body (2) of mass m.