What Factors Affect The Performance Of Underground Metal Detector?

- Jan 20, 2020-

What factors affect the performance of underground metal detector?

Metal detectors can detect very high depths. Regardless of the ground conditions, the depth of the detector depends on many factors. This includes machine, size and other factors.

How deep can a metal detector detect? A typical high-quality machine can detect coin sized objects six to ten inches below the ground. However, it depends to a great extent on many factors.


First, it depends on the type of soil you are dealing with. In addition, when large-scale objects are involved, under ideal conditions, suitable equipment can detect 14 inches or even 16 inches below the ground.

Some factors that may affect depth are:

Size of detected object: the larger the object, the deeper the object can be detected.

Target metal composition: some metals have high electrical conductivity, such as silver, copper and brass. Other metals are not as conductive as stainless steel. Therefore, it is difficult to detect the latter at a higher depth.

The proximity of the actual target and other large metal objects in the same area, the sensitivity setting of the detector: if the sensitivity is set to a good level, even small objects (such as gold block) can be found at a considerable depth.

How does coil size and type affect detector depth? The machine has standard coils, but you can also choose other coils according to the type, quality and size of the detector. Indeed, the size of the coil directly affects the depth that your machine can detect. It also affects its sensitivity. In other words, the larger the coil size, the deeper it can detect. However, at the same time, its sensitivity to smaller targets will be reduced. On the other hand, the smaller the diameter of the coil, the higher the sensitivity, but the detection depth will be reduced. The small coil is also lighter and easier to control. People usually choose it to solve difficult terrain or detect underground.