In the packaging industry, plastic containers are used for the transport and storage of liquid media. These include bottles, canisters, drums and IBCs (Intermediate Bulk Containers), which cover a wide volume range from approx. 0.5 litres to 1,200 litres.
Ideally, these must be tested for leaks in the production process cycle. Due to its good availability, compressed air is often used as a test medium. There are various challenges here: This means that the containers expand considerably when pressurised. Filling large-volume products to the test pressure requires special solutions to ensure that the filling process does not take too long. In addition, the testing process can be influenced by the upstream blow moulding process due to temperature effects.
The CETATEST 715 LV leak tester (large volume) was specially developed for the packaging industry and successfully launched on the market.
After the start impulse from the system control unit, the complete Test sequence controlled via the test device. The turbo filling option enables fast and automatic filling to the required test pressure. Integrated protective circuits protect the test part and the device's internal sensors. To achieve of a stable measurement state the expansion behaviour must be limited. For example, IBCs are tested in the transport grid box and additional hold-down devices are used. Temperature effects can be successfully compensated for by switching to appropriately parameterised test programs. For this purpose, the temperature of the test part is measured in the test stand and the right test programme elected.
The test pressures are in the range of approx. 25 mbar to 160 mbar (depending on the product). With the CETATEST 715 LV, the leak test of a 1,000 litre IBC can be completed in a total test time of less than 30 seconds, achieving good separation and repeatability. Depending on the test part volume, holes between 0.07 mm and 1 mm in size can be reliably detected.
The tester is prepared for Industry 4.0 requirements thanks to a large number of available industrial interfaces. The transmission of the measured values to the control system enables traceability and the evaluation of production quality.
The CETATEST 715 LV is supplied as standard with an internationally recognised calibration certificate (compliant with DIN EN ISO/IEC 17025) and a 3-year warranty.
CETA at Control 2020: Hall 7, Stand 7207
