|Quote:||Posted by Allodium|
|I need something that goes deep, and discriminates between different types of metals.|
there's a lot of iron in the soil here due to volcanic activity.
Is it possible to detect one metal and ignore others?
The PI designs do not discriminate at all,
but I think they are less complicated.
The VLF designs do discriminate different
The least expensive VLF machines have
a simple discriminator.
It will disc out iron first.
Then aluminum foil and gold.
Then lead, aluminum pull tabs, nickles and gold.
Then modern clad pennies and maybe zink and gold.
Then copper. It may not get copper.
For a little more money you can get one that will
select a small area that it wil discriminate.
That is called notching.
But it aint perfect. You got practice a lot with any
of them. It is a skill you have to aquire.
Hope that helps some,
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