| 摘要 |
PROBLEM TO BE SOLVED: To recognize a minute leak sound mixed with a vibration sound to enable a leaking portion to be found.SOLUTION: The leak detector includes: a first sensor 3 disposed at a target position of a leak inspection on a piping route, the first sensor 3 detecting a frequency of vibration at the target position of the leak inspection; a second sensor 4 disposed at a position different from the target position of the leak inspection, the second sensor 4 detecting a frequency of vibration at the position different from the target position of the leak inspection; a control unit 5 that reverses the frequency of vibration detected by the second sensor 4 and synthesizes the reversed frequency with the frequency of vibration detected by the first sensor 3 to derive a synthesized frequency; and an output unit 6 that outputs the synthesized frequency derived by the control unit 5.SELECTED DRAWING: Figure 1 |
