Patent ID: 7950284
Filing Date: 2011-05-31
Classification: G01N

Abstract:
1. A device for ultrasonic inspection of a wall of a pipeline that encloses a fluidum, the device being arranged to be moveable along a device axis through the pipeline along a longitudinal direction of the pipeline, the device being provided with electronic means, a body, a transmitting transducer and at least two receiving transducers, which transmitting and receiving transducers are attached to the body and are each mutually spaced apart in a first transducer array along an array direction that is directed substantially parallel to the device axis, wherein the electronic means are arranged to operate the transmitting transducer for transmitting a first ultrasonic signal to propagate through the fluidum to reach the wall, and to operate the at least two receiving transducers for receiving a second ultrasonic signal, which originates from the first ultrasonic signal after it is modified by the wall, according to a tandem method, wherein the at least two receiving transducers are operated for receiving the second ultrasonic signal substantially simultaneously.