| 摘要 |
A method and apparatus for determining leaks in sewage pipes. The apparatus includes a measuring probe having several radially arranged measuring electrode segments, the measuring probe being positioned in the sewage pipe. With the probe sections and electrode segments being arranged in such radial manner, the electrical probe, once electrically powered, measures a leakage current emitted by the probe's central section with several probes sections at a same electrical potential, and divides the measured leakage currents of the probe's central section in a mathematical operation into two or more electrode segments to determine both an axial and radial location for defects within the sewage pipe. A higher leakage current in one segment indicates the location of a leak, and the amplitude of the leakage current indicates the volume of the leak.
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