Technical term – cable tracker
A cable tracker is a radio detection device which measures the electromagnetic fields emitted by cables and conducts. There are three ways of using this device:
- Live wires and cables emit an electromagnetic signal that can be detected from the surface.
- If non-live cables or conducts can be reached and exposed at a certain point, an electromagnetic signal can be applied to them through a clamp, which the cable tracer can follow on the surface.
- A transmitter can be used to send a electromagnetic waves into the ground, towards to non-live and unreachable cables. This signal is transferred up by the cable through induction. The cable tracer can follow this signal from the surface.
When the cable tracer is situated over the cable or conduct, it picks up the electromagnetic signal, and indicates position and depth on the screen.