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Non-metallic pipes such as sewers or drains, service ducts, plastic gas and water pipes are not electrically conductive
and so will not be detectable using a Locator on Power, Radio or
All
Scan Modes. It is also impossible to apply a detectable
Signal Generator/ Transmitter signal to the non-metallic pipe or, for that matter, to the water or gas within that pipe.
If access can be gained into the pipe then a C.Scope Sonde, Plastic Pipe Tracer or Flexible Tracer should make it possible
to determine the pipes position and route.
Sondes
The C.Scope 8kHz and 33kHz General Purpose Sondes and the Duct Sonde are small, battery powered, waterproof transmitters
that can be inserted into a pipe, such as a sewer, drain or cable duct. The position of the Sonde (and therefore the location
of the pipe) can be pinpointed by using the Locator switched to Generator/ Transmitter Mode.
The Sonde is inserted into and then moved along the pipe to the point at which the pipe needs to be located.
This is normally done by fitting the Sonde to drain rods. Alternatively, the Sonde can be attached to a continuous
fibreglass duct rodder, jetter hose or camera inspection system.
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The 33kHz General Purpose Sonde can be used in pipes as small as 50mm (2”) in diameter and up to 7 m (23’) deep.
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The 33kHz Duct Sonde can be used in pipes as small as 30 mm (1.1”) in diameter and up to 5 m (16’) deep.
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The 512Hz and 640Hz Metal Pipe Sondes are able to transmit a signal from within a metal pipe. They can be used in pipes
as small as 50mm (2”) in diameter. The maximum depth the Metal Pipe Sonde can be detected will depend on the pipe
material and wall thickness.
Non-Metallic Pipe Tracing
NOTE
An 8kHz or 33kHz Sonde will NOT transmit a signal through a metal pipe.
