COMBIPHON CG 150 — Acoustic tracing of plastic / non metallic pipes

Tracing plastic and non metallic water pipes

Because plastic and fibre cement pipes are not electrically conductive they cannot be located with instruments such as the Sewerin UtiliTrac Pipe tracer/ locator which work by detecting electromagnetic fields.
To locate and trace plastic and non-metallic pipes Sewerin developed the Combiphon CG150 ® which utilises acoustics as the detection principle.

Tracing non-metallic water distribution pipes

  • The “Stopper” is an electrically driven, intensity controlled piston.
  • It is attached to a hydrant standpipe.
  • The hydrant is turned on and water is allowed to flow.
  • The water flows through the Stopper. When the battery driven control unit, CG150, is turned on it activates the piston in the Stopper which alternatively restricts and widens the water outlet.
  • The water column in the pipe is consequently set in motion with a resulting “heartbeat” sound which can be detected on the surface with a ground microphone such as the Aquatest T10 or the Aquaphon A200.
  • Where the highest sound is heard is where the pipe is located.

Tracking non-metallic water pipes into houses

  • On smaller pipes such as house supply pipes the "Knocker" is used instead of the Stopper. It attaches around the pipe with an adjustable chain.
  • When it is powered by the CG150 control box  it “taps” on the surface of the pipe and the resulting noise is heard on the surface by the ground microphone.
  • The Frequency & intensity of the Knocking can be adjusted via remote control. For example near walls less intensity is preferable but over longer distances, higher levels will travel further.

     

Tracing the route of non metallic water pipes

The COMBIPHON® CG 150 traces plastic water pipes using acoustics

Location of plastic pipes

Knockers and/or Stoppers cause the pipe and water to vibrate and a ground microphone picks up the resultant sound waves.

Plastic water pipe tracing

The CG 150 generator is ideally suited to work with the AquaTest T10 or the Aquaphon A200. Both of these devices can also be used to locate water leaks under pressure on their own

Remote Control

The CG 150 generator and the signal strength of the Knocker can be controlled remotely saving trips backwards and forward

Using the COMBIPHON® CG 150

The CG 150 is used in water supply distribution networks and by Plumbers when plastic pipes that cannot be detected using electromagnetic methods need to be traced.
It can also be used to reliably pinpoint fibre cement pipes.
Typical users are water network operators, water supply and service companies that need to identify pipe routes quickly and accurately.

FAQ

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