![]() Generally, a single frequency detector that transmits at a high frequency will be more sensitive to small targets and a single frequency detector that transmits at low frequencies will give more depth on large targets.ĭiscrimination is a metal detector’s ability to identify buried targets based on their conductive and/or ferrous properties. The frequency of a metal detector is one of the main characteristics that determines how well targets can be detected. The detector’s search coil receives the re-transmitted field and alerts the user by producing a target response. Any metal objects within the electromagnetic field will become energized and re-transmit an electromagnetic field of their own. Metal detectors work by transmitting an electromagnetic field from the search coil into the ground. ![]()
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