Sonde & Camera Locating in British Columbia
A sonde is a small transmitter that broadcasts an EM signal from a single point. Pushed through a non-metallic pipe or attached to a drain camera, it lets the locator pinpoint a blockage, a defect, or the camera head's exact position and depth from the surface.
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Sonde locating detects the signal from a transmitter inserted into a line — typically on a drain camera or push-rod — so the operator can mark the camera's position and depth above ground. It is the standard way to pinpoint a problem found on a CCTV drain inspection and to locate non-metallic drainage.
- A sonde is inserted on a camera or push-rod into the line
- The receiver locates the sonde's signal at the surface
- Position and depth of the point are marked
- Findings tie back to the camera footage
- Camera-head position in a drain or sewer
- Blockage, defect or collapse locations
- Non-metallic drainage routes
Pinpointing a specific point — a defect or camera position — in a non-metallic line.
Drainage and plumbing contractors locate the exact spot to excavate over a defect found on camera, so they dig once in the right place.
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Sonde & Camera Locating — FAQ
A sonde on the drain camera broadcasts a signal from the defect's location; the locator marks that point and its depth at the surface. The excavation then targets the confirmed spot rather than opening up the whole run.
Sonde & Camera Locating Across BC
More Electromagnetic Locating Methods
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Educational hub & service-support division of Leak.ca · Serving all of British Columbia · Since 1999