Patent ID: 8746048
Filing Date: 2014-06-10
Classification: G01G,Y10T

Abstract:
1. A device for the gravimetric detection of particles in a fluid medium, comprising a flat electromechanical oscillator, support means for the oscillator, actuation means for said oscillator, and, either side of the plane of the oscillator, two cavities enabling the oscillator to vibrate when it is activated by the actuation means, characterized in that at least one of the two cavities forms an integral part of a channel for the passage of a fluid over at least one of the faces of the oscillator, and in that said actuation means are in the form of at least one electrode arranged in the same plane as that of the electromechanical oscillator, and at a determined distance (g) from the oscillator, so as to ensure that the oscillator vibrates in its plane, an electrically insulating layer being deposited on all parts intended to come into contact with the fluid.