The testing device can measure even the smallest leaks in packaging
(helium detection)., The device is little used and in good condition.,
Information from the manufacturer’s brochure:, The detection limit
of < 10-8 mbar l/s of the CONTURA Z can only be determined by mass
spectrometric, Analysis can be achieved with a test gas., However,
when sensitive flexible packaging is exposed to such a pressure
difference,, the sealing seams could be subjected to such severe
stress that the package could even burst., Such stress is eliminated
by the patented membrane chamber principle of the CONTURA Z².,
Function:, The product to be tested is placed manually or
automatically on the bottom membrane. When the lid, is closed, the
test procedure is initiated automatically., During the evacuation, the
pressure of the atmosphere pushes the highly elastic membranes against
the, packaging, and the contour of the product becomes clearly
visible., The internal pressure of the packaging tightens the film
from the inside, so that a balance of forces is established, (Internal
pressure of the package = atmospheric pressure), which exerts no
stress on the seals. The test is now carried out under vacuum without
any deformation or inflation of the package. The escaping test gas is
detected and quantified in the mass spectrometer., mass spectrometer
(cf. ASTM 493, Method B)., Test result indicates the amount of
leakage, but not the location of the leak., LEAK LOCATION, The
critical points of the package can be examined with the standard
sniffer probe. This allows the location of leaks in the package to be
precisely determined., (cf. ASTM 499), HELIUM AS A TEST GAS, The noble
gas helium (E989), which is used as a test gas, is ideal for leak
tests., - Inert gas, therefore completely neutral and no harmful
effect on the product, - Excellent detectability in the mass
spectrometer, - Present in the atmosphere at only 5 ppm, - Easy to
handle, - Unlimited approval as an additive to food, The low
concentration in the atmosphere and the precisely definable
concentration in the test object make helium superior to any other
test gas., The detection limit is about 1,000 times lower than for CO2
and about F5750968 10,000 times lower than for N2., The test gas can
be injected together with the shielding gas. The required helium
concentration in the package is only about 3 to 6%., PRESENTATION OF
TEST RESULTS, For easy and convenient operation, the Contura Z² is
equipped with a multi-color 7 touchscreen., The test result is
displayed as a leak rate value, a bar graph and a PASS/FAIL signal,
which is indicated by a, green/red signal lamp. This ensures an
objective test result independent of the operator. The Expert and
Setup modes are additionally indicated by a yellow light of the,
Signal lamp displayed., With the implemented standard touchscreen
software, tasks in setup and expert mode can be easily performed., The
measurement results can be stored in the system and retrieved via USB
for further processing. This allows for the automatic creation of
complete documentation of the test results., Dimensions / weight: 800
x 1,133 x 1,130 mm, 350 kg