15*15 sheet of copper in 2m depth !! possible??

[payam20]

hi

i have attened to your perfect forum recently .
its about 2 monthes that iam working on metal detectors . i have build deltapulse2 . chance . sasho and apulse .
but i havent reached any good resualts . all of them have problem in depth
best resualt was for apulse (15*15cm sheet of copper in 1.60m depth in ground with an 80*80cm square loop )

i need a metal detector that sens 15*15cm sheet in 2m depth.nobody knows a good metal detector to build???

i found a metal detector informations . i think its dx8000 but i have worked on it but it didnt worked . some thing is wrong with these informations .( it have 2 versions i think)
how can i attach a zip file?????????

[kt315]

Go Advanced -- Attachments --- choice your zip

[kt315]

or upload at http://www.avral.ru/ and give a link

[Qiaozhi]

how can i attach a zip file????????

New members are not allowed to add attachments until they have made at least one post in the forums. You have just done that, so please try again.

[golfnut]

I want a detector that goes to the centre of the earth and I have a 12 Euro budget - which machine shall I build?

[kt315]

[golfnut]

[payam20]

I have worked on dx but it didnt worked . one of my freinds have worked on it and the resualts was perfect 15*15 sheet of copper in 190cm in ground . but he didint shar us any thing
I have attached apulse too.

dx:

https://www.transferbigfiles.com/f7b...hF_G_xG0BwgnQ2

[Tinkerer]

hi

i have attened to your perfect forum recently .
its about 2 monthes that iam working on metal detectors . i have build deltapulse2 . chance . sasho and apulse .
but i havent reached any good resualts . all of them have problem in depth
best resualt was for apulse (15*15cm sheet of copper in 1.60m depth in ground with an 80*80cm square loop )

i need a metal detector that sens 15*15cm sheet in 2m depth.nobody knows a good metal detector to build???

i found a metal detector informations . i think its dx8000 but i have worked on it but it didnt worked . some thing is wrong with these informations .( it have 2 versions i think)
how can i attach a zip file?????????

Double the coil speed -- search the forum for "fast coil"
Double the coil diameter ---depth id proportional to coil diameter
Double the coil current --- sensitivity is proportional to field density

[kt315]

I have attached apulse too.

why apulse? this schema is in bulgarian book. I especcialy created a thread on this detector http://www.geotech1.com/forums/showt...ight=bulgarian
somebody takes the info and calls this apulse.

[Funfinder]

Detecting a coin at 2 meters? No problem :

1. create an extremly powerful static induction balance field - use the parts of an amateur-radio station - 50.000mW minimum!
2. stability of this field has to be extremly high (it needs very sensitive auto-regulation circuits which control the current-levels)
3. coilsize: 70cm (2 ft.) eliptical DD should be OK, because that way it still finds very small stuff
4. stability of this coil has to be enormous! 0% possibility to bend the coil or the cover!
5. there is no coil cable (because it would get detected) but its also not wireless - power and signal runs over the fixed stem
6. the main challenge is to create analyzing circuits which will recognize on an extremly high-sensitive basis every
super small change of the coils-EM field and also can find out if it was caused by a metal object or by the ground
(btw. forget using hyper-sensitive ciruits only, because if this would work the powerless field of a pinpointer also
would be able to detect metal from many meters away)


with PI such ultra-depth is not possible because it would take too long for creating such mega EM-field pulses -
and those even could destroy the pcb.


Seems we need some high-voltage engineers and treasure-hunters who have no problems carrying some
car-batteries in their backpacks. But this is not needed anyway cause the detector would find them right away.
What's possible is a coil on wheels while the user drags it from 3 meter away by a fixed stem.

[kt315]

russian extremally megaextradeeper sensor. simple, effective, but only in right hands =)

[landman]

Funfinder, I find this gentlemans quest fascinating and challenging.
What do you believe the Deephunter with the 100CM coil could do
on a 15x15cm copper plate? According to one source
the Nokta the Golden King can do 150cm with it's 100cm coil.

[liudengyuan]

xr 71

[Funfinder]

Funfinder, I find this gentlemans quest fascinating and challenging.
What do you believe the Deephunter with the 100CM coil could do
on a 15x15cm copper plate? According to one source
the Nokta the Golden King can do 150cm with it's 100cm coil.

Such a fantastic value may be possible with fixed coil at sensitivity 10 with their own best working Golden King model
but not under real search conditions. Could be the same like with the claimed Golden Gate in-air test detection values.

So, landman, it's very interesting for you to compare the following with the Golden Gate:

The DeepHunter detects with its 47cm motion-coil an usual 0,5l beer-can from 1m away
in air and if buried it will detects it ca. 75cm deep.

http://www.mirrorcreator.com/files/A...eter.avi_links


The following in-air-test pdf shows 86cm (33,9'') for a 5x5cm plate with the C47 motion coil and I fully can confirm this!
http://www.mirrorcreator.com/files/Y...oils.pdf_links
They have used sensitivity 10 for the test but under many conditions its easier to work only at 8 or 9.


The DeepHunter may find a 15x15cm plate no matter if iron, copper or alu really buried in medium-mineralic soil
at sensitivity 9 with the 100cm coil if that one is moved 10cm over the ground around 120cm deep!


btw. distances are looking pretty short in air but here you can see how much work it can be:
The end of the steel-part was "only" ca. 50cm below ground.... (size ca. 10cm broad)
Are you ready for digging some of these holes?

http://www.mirrorcreator.com/files/Q...2010.avi_links


And when we are talking at the moment about the real depth:
The in-air detection results of the Jeohunter with the 45cm nonmotion coil was ca. 3,5 meter for a
steel-door and 4,5m for a 3x3m broad metal structure - with the improved DeepHunter and the ca. 4x larger
1m coil both values should be around 20-40% higher.