Method and apparatus for precision non-destructive non-contact control of super small differences of pressure
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United States of America Patent
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Issued Date -
Aug 26, 2010
app pub date -
Feb 16, 2010
filing date -
Feb 14, 2009
priority date (Note) -
Abandoned
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Abstract
Method and apparatus for precision non-destructive non-contact control of super small differences of pressure, which is used for non-destructive control of tightness of various products regardless of the method of sealing and the state of the internal volume of products, with the apparatus consisting of a body of the control unit of the device, working and control units, sensitive membrane, transparent window of the control unit, connecting pipes of the control and working chambers, electronic speckle interferometer, the base that is isolated from the vibration, and the electronic processing unit for monitoring results and presenting results on the display. The bending of the membrane characterizes the quality of sealing of the investigated object and is determined by the laser method of non-contact electronic speckle interferometry.
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