Device for and method of non-destructively detecting thickness anomalies of a tube wall

摘要

The device has a sensor (1) provided with an emitting and receiving unit (11) for emitting and receiving ultrasonic waves along direction, and a coupling unit for transmitting the ultrasonic waves to a surface of a wall to be controlled. The sensor includes a rigid enclosure e.g. stator (12) and rotor (13), sealingly defining a free internal volume (10). The coupling unit includes a solid coupling body i.e. coupling ring (21), associated to the enclosure, where coupling liquid (L) is disposed in the free internal volume and in which the emitting and receiving unit soaks. An independent claim is also included for a non-destructive controlling method for detecting thickness anomalies of a wall.