Patent ID: 7323881
Filing Date: 2008-01-29
Classification: G01M

Abstract:
1. A process for evaluating the degree of vacuum in closed bodies with transparent walls, by means of formation of an arc across each closed body by the application of an electrical field, said process comprising the following consecutive operating stages: feeding the bodies to be inspected in succession; transferring the bodies to means bearing an earth electrode; moving the bodies along a path determined by the means carrying the earth electrode in contact with same; application of one or more pre-ionisation charges at one or more points on the transport path; application of one or more checking electrodes applying one or more high voltage charges in order to produce the electric arc across each body between said electrodes and the earth electrode or electrodes; inspecting the arc or arcs formed inside said body by means of respective artificial vision cameras; subjecting the reading taken by the artificial vision cameras to an algorithm for evaluation of the arc; referencing the bodies according to the result of the arc evaluation for their selection; generating signals for differentiated exit of the bodies.