Ground penetrating radar – Electromagnetic fields detector
This instrument, used to scan concrete, is a high-frequency radar with an integrated magnetic fields sensor. Besides having the same capabilities as a ground penetrating radar, this instrument can detect the electromagnetic field produced by a live electric cable. It would allow you to detect a conduit that is, for example, hidden by a rebar.
Ground penetrating radar
The ground penetrating radar is used to see through concrete or ground as an X-ray. This instrument makes it possible to locate conduits or other objects in conrete or buried underground.
High-frequency ground penetrating radar is used to locate objects as small as the diameter of wire mesh located at a maximum depth of about 24 inches.
Low-frequency ground penetrating radar is used to locate objects (pipes, fiber optics, tank, etc) to a depth of 20 feet. However it will be harder for this particular radar to detect small diameter objects.
Electromagnetic locator or radiodetector
This instrument is used to detect and locate conduits, cables and electrical duct banks in and under concrete and in the ground up to 20 feet deep.
This instrument is used to detect and locate leaks in copper, plastic or metal pipes