An aspect of the present invention is an apparatus for inspecting a base of a liquid filled tank for corrosion, having (a) a housing for use in the liquid filled tank; (b) a set of one or more ultrasonic transducers mounted to the housing, for directing one or more ultrasonic pulses at the base, where...http://www.google.es/patents/US6253615?utm_source=gb-gplus-sharePatente US6253615 - Method and apparatus for in situ measurements of corrosion of submerged surfaces
Method and apparatus for in situ measurements of corrosion of submerged surfaces
