Reliable detection of plastic pipes
Sewerin pipe localisation with the vibration pipe locating method (SeViRO)
For operators of pipe networks with plastic pipes, the SeViRO method offers optimum localisation results if the pipe route is unknown. This acoustic method is suitable for locating liquid or gas-filled pipes.
The prerequisite for localisation is a contact point to the medium that exists or is created at a known point in the pipe. A hydrophone (water sound transducer) or a microphone (air sound transducer) is installed there. The sound transducers are inserted into the respective medium, i.e. directly into the pipe. So-called "acoustic cross-passages" are generated on the surface along the suspected route of the pipeline to be located. For this purpose, a vibrator, which vibrates at a defined frequency and thus generates structure-borne sound, is gradually moved from one side of the pipeline route to the other.
The sound of the vibrator is transmitted through the soil and the medium in the pipeline to the sound transducer. The energy transmitted from the vibrator to the pipe has a maximum at the intersection point between the measuring line and the pipe route. The line route is created by connecting the maxima of several measuring lines.
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