Mocon AMETEK Dansensor Lippke 5000, User Manual

Page: 37 / 136

Dansensor
®
Lippke
®
5000 EN User Guide 35
P/N 380419-C
05/2022
Septa
In order to ensure a linear pressure increase in the package and to avoid unnecessarily high
consumption of air it is necessary to seal the package’s piercing point with a septum.

A septum also protects the package from tearing at the piercing point.
Three types of septa are available:
When choosing a piercing point on a package you should avoid seams and areas with labels
and adhesives. The package should, if anyway possible, be pierced in the middle in order to
ensure that the package inflates evenly.

Ø21/Ø3x3 mm, black Besides being the most all-round septa, it is especially
recommended for testing flat packages, as the thicker rubber
material allows for the
Blunt mono needle to be used. This
needle head provides good sealing without requiring
penetration of the needle tip into the interior of the package -
see
"Needles" on page 32 for details.

Ø21/Ø3x1 mm, grey As this septum is only 1 mm thick it is very flexible, which
makes it especially suited for packages that become round
when inflated.

20x1 mm, blue (roll) The blue septum is used for needles with other diameters than
4 mm, e.g. for small packages that can't fit a regular black

or
grey

septum or with twin head needles.

It comes in a roll and you cut off the length you need.