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Metal Detectors
General Metal Detector Discussion
Difference between VLF and PI metal detectors
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<blockquote data-quote="Diggerdude" data-source="post: 26158" data-attributes="member: 308"><p>A PI detector needs the gold joined together to energize it and produce a signal. VLF's can detect finely disseminated gold but this is also why they are susceptible to ground mineralization. You can test this out by trying to detect a container full of alluvial dust. I have tested this with my 5000 and it doesnt make a noise yet a whites GMT picks it up easy.</p><p>I have also tried it on some specimens in WA that contain an ounce of finely disseminated gold in a lump about the size of a tennis ball, the 5000 made no noise but the GMT detected it easy.</p><p>For this reason it is definately worthwhile to have both a PI and a VLF detector in your kit.</p><p></p><p>DD</p></blockquote><p></p>
[QUOTE="Diggerdude, post: 26158, member: 308"] A PI detector needs the gold joined together to energize it and produce a signal. VLF's can detect finely disseminated gold but this is also why they are susceptible to ground mineralization. You can test this out by trying to detect a container full of alluvial dust. I have tested this with my 5000 and it doesnt make a noise yet a whites GMT picks it up easy. I have also tried it on some specimens in WA that contain an ounce of finely disseminated gold in a lump about the size of a tennis ball, the 5000 made no noise but the GMT detected it easy. For this reason it is definately worthwhile to have both a PI and a VLF detector in your kit. DD [/QUOTE]
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Metal Detectors
General Metal Detector Discussion
Difference between VLF and PI metal detectors
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