Abstract: The device comprises an oscillator with electrodes, which is mounted in a casing, means for oscillation excitation, for measuring, recording and processing of signals, and a computer, the attachment of the oscillator being effected by means of balls with electroconducting surface and the oscillator being mounted in a holder with the possibility of movement in relation to the balls. The oscillator may be executed in different variants, for example in the form of a cylinder, disk, rod, plate, ball, and it may be hollow and may contain a partition as well as elements increasing its useful surface. The device is provided with a high-pressure vessel and is also used under high pressures.