VLF metal detectors

VLF

— this principle uses relatively low detection frequencies (in fact, the abbreviation itself means “very low frequency”) and assumes the presence of two windings — receiving and transmitting. VLF technology has become widespread in modern metal detectors, because. it allows you to create fairly reliable instruments suitable for complex types of soils and capable of recognizing found metals. The main disadvantages of this principle are the high cost of the coils and the relatively small search depth.