Discriminatory segments
Discrimination segments in digital metal detectors are used to distinguish between different types of metals based on their conductivity. These segments help users eliminate unwanted targets (e.g. iron, nails) and focus on more valuable objects (e.g. coins, jewelry).
Functions of discriminating segments:
-
Segmentation by conductivity: different metals have different levels of electrical conductivity. The detector, when processing the signal, determines the conductivity value of the target and assigns it to one of the discriminating segments. Each segment represents a range of conductivity (from low values for ferrous objects to high values for non-ferrous metals such as copper and silver).
-
Display: Modern digital detectors display the discriminating segments on the screen. The user can see which segment the detected object falls into and decide whether to react to this signal.
-
Adjustable discrimination. The detector will then not emit a signal when an object is found in these segments.
-
Selective search. This saves time and reduces the likelihood of digging for worthless objects.
Discriminating segments are useful for searchers who want to target specific types of finds and reduce interference caused by unwanted metals.