A system for the discovery of free particles in a component housing and method for finding.

摘要

PCT No. PCT/FR89/00281 Sec. 371 Date Jan. 31, 1990 Sec. 102(e) Date Jan. 31, 1990 PCT Filed Jun. 5, 1989 PCT Pub. No. WO89/12379 PCT Pub. Date Dec. 14, 1989.System for detecting free particles in component housings assembled on a printed-circuit card, according to which the card is made integral with a vibrating frame by a pneumatic mechanism. A removable piezo-acoustic sensor makes it possible to test for the presence of free particles in one or more of the component housings.