| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that inspection is not carried out smoothly since spacing between adjacent sensor blocks gets wide and narrow not to allow the inspection or to generate interference between adjacent sensor blocks, in a leakage flux pig traveling inside a conduit and having an eccentric drum for detecting a defect of a pipe wall or the like. SOLUTION: The adjacent sensor blocks are arranged in a position shifted each other along a pipe axis direction 41 to prevent the adjacent leakage flux sensor blocks 31a, 31b, 31c from contacting.
|
