Advantages of Magnetometers Locating

What are the Advantages of Magnetic/Magnetometers Locating? Advantages of Magnetic locators are the specific ability to only detect ferrous metals, portability, ease of use and availability and affordability to purchase.

Here is a list of some more advantages and context for utility locating.

Highly Sensitive to Ferrous Metals, not alloys: They can detect ferromagnetic metals and their alloys.

The magnetometer sensors, which collect ambient magnetic forces, are not subject to the same interference as ground penetrating radar.

Magnetics typically can detect through certain interference that would limit other geophysical methods.

For example, a steel tank at an unknown location beneath a paved parking lot (reinforced with wire mesh or rods) can be identified using a magnetometer.  A magnetometer would be able to locate the tank since its magnetic field would be greater than that of the reinforcement material.

Non-destructive: Allows for the detection of underground objects without the need for excavation.

Magnetic values often provide some indication of relative mass, i.e., large mass versus small mass.

Ease of Use: Generally lightweight and easy to operate, requiring minimal training. Most systems, can obtain data at a walking pace (or faster), allowing an area of several acres to be surveyed in a day.
Newer magnetometer systems have been designed with a direct input for GPS. 

Durability: Designed for field use, magnetic locators are built to withstand rough handling and various environmental conditions.

Most systems and support equipment (measuring tapes, GPS units, and flagging) can easily be transported in the trunk of a car or van. Systems are non-invasive, mobile, and self-contained. 

No external power or additional connections are needed. 

Availability: Magnetometer systems are widely available for purchase or rental.

Newer magnetometer systems have been designed with a direct input for GPS.