LECKDETEKTOR UND LECKSUCHVERFAHREN ZUR DICHTHEITSPRÜFUNG VON OBJEKTEN

摘要

The invention relates to a leak detector (1) for leak-testing objects by tracer gas leak detection, the leak detector (1) comprising: – a detection inlet (2) intended to be coupled to an object that is to be tested, – a pumping device (3) comprising: – a vacuum line (7) connected to the detection inlet (2), – a rough vacuum pump (8) connected to the vacuum line (7), and – a turbomolecular vacuum pump (9) connected to the vacuum line (7) and the delivery of which is connected to the rough vacuum pump (8), – a gas detector (4) connected to the turbomolecular vacuum pump (9), characterized in that the pumping device (3) comprises an ancillary pumping means (10) connected to the rough vacuum pump (8) to lower the tracer gas limit vacuum pressure in the rough vacuum pump(8). The present invention also relates to a leak detection method for leak-testing objects using the so-called tracer gas leak detection method.