leak detection technology is used to confirm the presence or absence
of channels and/or holes in packages; in effect, provides verification
of package integrity.
The detection of these defects involves the use
of a light tracer gas which is capable of locating even the smallest
leak quickly. The turnkey SIMS 1282+ unit,
offered by LDA, Inc., measures the helium flow rate escaping from
the test package through any and all leaks that are present thanks
to a calibrated helium-specific mass spectrometer. The rate at which
helium escapes from a package can be closely correlated to the rate
at which water vapor, oxygen or other gasses may enter or escape
from a package.
filled with helium on-line, or off-line, and then placed in a Vacuum
Test Fixture Module to measure the rate at which helium escapes
from the package. A Head-Space Analysis Module is then used to measure
the concentration of helium in the package, and provide an Actual
Helium Leak Rate.