Apparatus to test the sealing of waterproof watch housings has test chambers and a comparison chamber, with valves and throttles and fluid columns

摘要

The apparatus to test the sealing of waterproof watches has at least one test chamber (1) and at least one comparison chamber (2), with a fluid link between them. Each test chamber has a maximum of one valve (B) and one throttle (C). A fluid column is sufficient to show the pressure differences for each test chamber. The throttle is set so that the pressure in the test chambers increases by the same amount as in the comparison chamber, as long as the watch housings are sealed.