| 摘要 |
<p>The invention relates to a method for detecting fouling or clogging deposits comprising at least one ferromagnetic material such as nickel, magnetite, or the like, on or in the vicinity of the outer wall of a tube (215), wherein said method is characterized in that it comprises at least the following steps: moving a magnetized source (205) inside the tube (215) in the direction of the length thereof, measuring at least one mechanical quantity correlated with the axial component of the magnetic forces exerted on the magnetized source (205), determining the position and/or thickness and/or volume and/or length of said deposit (265) on the basis of the variations in the measured mechanical quantity.</p> |
