Patent ID: 9103771
Filing Date: 2015-08-11
Classification: G01N

Abstract:
1. A quantification device for quantifying the degassing of a piece of equipment placed in a vacuum chamber, the quantification device comprising: a metal blade made from a ferromagnetic material comprising a fixed end and a free end, the blade being provided with a cooling device and a measurement device for measuring an intrinsic temperature of the blade; an electromagnet for exciting the blade; and a measurement sensor for measuring the excitation of the free end of the blade connected to a signal conditioning device comprising an acquisition and calculation device for acquiring measurements and for calculating at least one oscillation frequency of the free end of the blade, the acquisition and calculation device being connected to a calculation device for calculating a surface density of a mass deposited on the blade, wherein the cooling device is configured to cool the blade to a temperature lower than a solidification temperature of polluting particles being deqassed in the vacuum chamber.