Underwater Metal Detector
The environment in which a metal detector is used the one of most important factors when determining which technology to choose. Lets do a metal detector comparison for underwater technologies: Pulse induction metal detectors are unsurpassed used in salt-water environments both on the beach and when diving. A PI underwater metal detector shoots high voltage electronic pulses into the ground. The technology is deep seeking and highly accurate for detecting precious metals. It is used successfully in salt water and sandy environments because the detector is not negatively affected by mineralization, allowing jewelry and other metals to be located even under highly mineralized sand. One drawback to this technology is it's high sensitive and it picks up on other debris requiring the user to sift out the jewelry.
For the best metal detector discrimination, a very low frequency VLF metal detector should be used, the equipment is best suited for seeking out relics, coins and jewelry. The VLF type underwater metal detector utilizes phase shifting and notching to detect different metal types. While the technology works well in singling out specific metal types, mineral interference can be an issue. However, models like the Fisher 1280-X Aquanaut Metal Detector With 10" Coil is equipped with a sensitivity dial to assist with disregarding interference from ground minerals. VLF’s to be used in the ocean must include a salt-water mode.
Broadband spectrum BBS and FBS full band spectrum metal detectors are different from VLF detectors in that they utilize multiple frequencies simultaneously. BBS technology transmits 17 frequencies while FBS transmits 28 frequencies. The frequencies range from 1.5 to 25kHz for the BBS and 1.5 to 100kHz for FBS. Multiple frequencies being used at once allows better metal discrimination as well as metal detection at greater depths. Minelab is currently the only underwater metal detector manufacturer using FBS technology.
Minelab also offers Minelab Excalibur II 1000 and Minelab Excalibur II 800 which promises to move from 200 feet deep water to land environments effortlessly.
Finding the best metal detector for their needs may be daunting, because in a world where technologies are always expanding, we cannot always fully understand the technology to know what is best for us. Whether relics hunting, coin hunting, gold prospecting, underwater hunting, or perhaps in any other treasure hunting, metal detector selection is varied and complicated. |
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What technology and features in metal detectors should treasure hunters be looking for? We will be discussing here our most popular all purpose metal detector, Treasure Hunter XJ9-3050 suited for almost all types of treasure hunting. |
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Various metal detectors made by different companies present all-in-one detectors that can cover the broad spectrum of treasure hunting needs. Most all purpose metal detectors comprise of a standard set of features. These include the metal detector’s depth, technology and frequency used, detection modes, ground balance, signals, sensitivity, and metal discrimination. |
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