Dansensor LeakPointer 3 and LeakPointer 3+

Fast, Sensitive & Non-destructive Leak Detectors of Gas Flushed Product

Checks the pack integrity of gas flushed products. Helps assure the stated shelf life will be achieved.

Fast & highly accurate. Reliable and repeatedly capable of detecting very small leaks, down to 50 microns (µm). Cost effective, non-destructive test that reduces the product and packaging waste created in other methods. Eliminates the biological hazard of having a water bath in the production area.

These are 4th generation leak detectors from Dansensor to use CO₂ as a trace gas. Through continuing research and development, Dansensor has further optimised the test method, reduced the test time, improved sensitivity, lowered the sensitivity to atmospheric CO₂ and can now calculate the size of the hole causing the leak.

Dansensor^® LeakPointer 3 Small chamber, ideal for single pack testing, when using the PackBase insert. Immediate calculation of hole size when testing single packs. Multiple pack testing results are expressed in ppm CO₂ / sec. Integral Delta-Pressure meter, essential for setting the correct test vacuum for each pack type. Integrated Venturi vacuum pump.
Dansensor^® LeakPointer 3+ Large chamber, suitable for multiple package tests, or testing a large single pack. Leak size is expressed in ppm CO₂ / sec. Integral Delta-Pressure meter, essential for setting the correct test vacuum for each pack type. Integrated vacuum pump within the body of the unit.

The Cause of Leaks Dansensor’s investigative work has shown that the majority of leaks are caused by very small holes. Almost two thirds are less than 200 micron. Any effective leak detection method must be sufficiently rigorous, sensitive and of long enough duration, to be able to find those very small holes.

Having even a small leak in a gas flushed pack will cause the headspace to return to atmosphere (20.9% oxygen) within a few days. The larger the hole, the faster the decay of the modified atmosphere. Starting with a headspace of 0.1% O₂ and by using a series of certified holes, Dansensor measured the time taken for a pack’s atmosphere to return to 20.9% O₂. Even a pack with a very small 50 micron hole had a headspace of 10% O₂ after 3 days – showing it is essential to detect very small holes to ensure shelf life.

PackBase and PackFix To enable the testing of the smallest packs, or those with a low volume headspace, we offer the option of a PackBase and /or a PackFix to increase the differential pressure between the pack headspace and the test chamber. See image opposite.

Test Method Test packs must contain at least 10% CO₂. The test pack(s) is placed in the test chamber and the lid closed. This automatically activates the vacuum pump to evaluate the test chamber and create a difference in pressure between the inside of the pack and the test chamber. It is this difference that forces gas out of the pack and into the chamber. A sensitive CO₂ sensor detects any increase in CO₂ levels within the chamber & registers a leak. When using the LeakPointer 3 version, the size of the hole causing the leak will then automatically be calculated and displayed. The test results are automatically stored to the internal memory and can be exported via LAN or USB ports.