Whether PI MD can make metal type recognition?

[guubir]

Let me think about it, if I can, why don't I use VLF directly?
I still want to know if it is possible? Thanks

[Qiaozhi]

Let me think about it, if I can, why don't I use VLF directly?
I still want to know if it is possible? Thanks

Try reading this entire thread ->
https://www.geotech1.com/forums/show...tion-Challenge

[waltr]

Also many other threads on the subject. Read my HH2 build thread for some possibilities:
https://www.geotech1.com/forums/show...ake-on-the-HH2

This version can discriminate high verse low conductors but NOT Fe which can go either way depending of size & shape.
This is very much like the TDI which is another to read about.

Another interesting possibility is discussed in these two links:
https://acdc.foxylab.com/node/47
https://habr.com/ru/post/435884/
Use Google Chrome Translator to read.

Another interesting method is the Pulse Resonant detector. Details in this thread:
https://www.geotech1.com/forums/show...tector-project

I used his circuit to build a pin-pointer and it does discriminate ferrous from non-ferrous but not high verse low conductors.