People who love diving and looking for treasures sure have metal detecting devices with them and in the event that they want to find treasures on old sunken ships at the bottom of the seas then there is no doubt a reliable and waterproof metal detector is what they need. You too can also make use of waterproof metal detector as long as you follow the specifications indicated on the unit. So, if you are interested in hunting underwater treasures as well here are some things you should think about before buying a unit for your expedition.

Basically, you need to know the differences between three types of waterproof metal detectors for your metal detecting needs. Presently in the commercial market there are three kinds available: VLF (Very Low Frequency type), BBS (Broadband Spectrum type), and the PI (Pulse Induction type). Each type of detector has certain capabilities that can detect metals at certain depths and at specific environments. For PI metal detectors, these are great tools when going in salty waters especially along the beaches because ground minerals found on sand do not easily affect their sensors. The best feature with these gadgets is their rapid electronic pulses which when activated can be able to seek metals buried several feet deep into the ground. Their sensors are very sensitive to precious metals although it cannot discriminate efficiently between precious metals to trash or junk items.

The VLF metal detectors are better in metal detecting than the PI detectors when it comes to detecting metals on shallow grounds because its pulses is effective on that level. It is very effective in finding washed away relics, jewelleries, coins and old metals. However, it can easily become affected by ground minerals because of the low electronic impulses it releases which make sensing a little bit inefficient so if the ground is full of metallic minerals sensing can also become less efficient.

The BBS detectors can be able to give off simultaneous, multiple frequency signals so their sensors are very sensitive overall. They are ideal tools when finding relics, coins, jewelleries, and other metals while strolling on the beach and can be able to discriminate metal junk from valuable metals. So depending where you will be doing your search these specifications can give you some tips on what model you should look up to. The VLF can be used effectively on either salt or fresh water while the PI and BBS detectors can only be used ideally on salt water.

If you will be metal detecting under the sea, make sure what you have is a waterproof metal detector that is specifically made for certain depths because some models are not intended for deep water diving. The metal detector’s deep rate is the indication of how deep the detector can go so always check on the deep rate of the waterproof metal detector before buying it. You may also need to have some accessories to help you with your treasure or relics hunting such as a carry bag for easy containment of objects, a trowel and a sand scoop. There are also waterproof headphones to make your search easier and more accurate. It is also advisable to bring extra batteries and waterproof headphones because you might want to thread away from the land so better be equipped always.

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