Leakage locating device for locating leakage in region of e.g. pneumatic air supply, has contactlessly operating sensor implemented as ultrasonic sensor, which includes sound sensor, and mouth piece with axial end including inlet opening

The device (1) has a contactlessly operating sensor implemented as an ultrasonic sensor (2), which includes a sound sensor (3). A mouth piece (4) has an axial end with an inlet opening (6), where the ultrasonic sensor is arranged in the mouth piece so that the ultrasonic sensor points to the inlet opening. The mouth piece or a sound tube exhibits an outlet opening (8) at an end lying in an axial direction opposite to the inlet opening. An optical or acoustic display device (16) is provided to inform an operator about the leakage. A flow sensor (12) determines leakage-flow volume. Die Erfindung schafft eine Leckage-Ortungsvorrichtung (1) mit einer berührungslos arbeitenden Ultraschallsonde (2).