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PI discrimination

A

Anonymous

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Nice and active forum this one!!
I am really fed-up with the number of rusted pieces of farming machines that I have to dig in my neighborood with my PI machine. You will tell me to use a VLF instead since I do not face a particularly mineralized ground here but I stil like PI machines.
Can anyone tell more about the state-of-art of <span style="background-color:#ffff00;">++proven++ </span>metal discrimination on PI systems?
Ferrous vs Non-ferrous targets only, or even more detailed? Foil recognition, etc..?
At what minimum target distance?
<FONT COLOR="#ff0000">Eric</FONT>, do (did) you ship already one of your models with any form of discrimination other than simple delay adjustments? Or, do you currently work on such features in your lab?
We (as amateurs) are currently actively working on such an all-digital, PIC-based system and we wonder if the current performances of our prototype #1 are at least approaching those of existing professional machines.
Thanks to all,
Willy
 
Hello there Bald Willy
In answer to your question, yes, a ferrous/non- ferrous discriminator has just hit the market place.
Full details are available at the following address:
http://www.reevejones.com.au
My enquiries have shown that this instrument (called Ferrous Hound) is the result of over 3 years of intensive R and D work(including extensive field testing)by Reeve Jones Pty Ltd in Perth, Western Australia, and involves the development and use of some very clever technology.
Does it work? Having used it in the field, and having spoken to other users, I can categorically say that it certainly does work, providing 100% ferrous identification at depths at least equal to (and often greater than) the detection depths of the best detectors currently available.In my experience,it certainly fulfills all the manufacturer's claims in every respect and seems to be a very smart piece of welcome technology in the area of ferrous/non-ferrous discrimination for those involved in gold prospecting, treasure hunting, relic hunting and meteorite hunting - it's something that actually works and is available at a reasonable price. Check out the website - it makes interesting reading and you might also be interested to know that Reeve Jones Pty Ltd is also well advanced in the development of a new PI detector - I've been told that preliminary indications of performance are extremely encouraging - like 40% better than the best detectors currently available!! If Ferrous Hound is any indication, I can believe it.
 
The only worry with the Ferrous Hound is the amount of people asking for information and not getting it.
The first mention I saw on a forum had nearly 250 people reading the request and not one had used or seen it in action. Finders forum in Australia had a similar post some weeks back. 130 or 140 read the request for information and again none seemed able to supply any facts.
If it works as well as you say, and it may well, it would be nice to see some feedback to the various forums.
 
meeting at the West Coast Metal Detecting Club here in Western Australia about a year and a half ago.
IMO, it does work very well and can testify to it's abilities from what I saw. I have heard lots of good and I have herad some bad but most of the bad has been from the "doubting thomass' who think it's a con job). It's NOT.
The inventor and promoter SEEM to be honest and known to some metal detecting companies around the world and is also know of in the industry of industrial metal detecting. They are also involved in other credible ventures.
The actual device is a ferrous detector that allows your detector of choice(most of them) to when you find the buried object, help you decide on whether its ferrous or non ferrous by detecting the same object with it's own system. Simple. An all metal detector becomes a ferrous and non ferrous detector by using the F.Hound to help you decide, by sound off of it is ferrous. So when you know this, you just do not dig for that target. move on to the next one that does NOT respond to the ferrous hound.
As soon as I am finished with VLF(Explorer) and I can afford it, I'll probably end up with the latest Aquastar,Goldquest or maybe other good P.I. that will take the device and compliment it.
Who knows, maybe by that time it may actually come onboard as a standard feature on the latest P.I s. of the day in the future.
I understand that the Garret Infinium LS has a similar feature built in.
Have you seen or tried the device yet Mr Bill?
Hardnosed
 
When you say: <span style="background-color:#ffff00;">your detector of choice(most of them)</span> , do you mean almost every PI machines or VLF are included too?
 
"Ferrous Hound is a compact, ULTRA-lightweight ferrous metal detection device designed for attachment to <span style="background-color:#ffff00;">any metal </span>detector."
is recent and it wasn't like that in the beginning when I saw and heard of it.
Be aware of this as well;
Here, in this part of the world at least and I am sure in most industrialised countries including the USA, there are laws that won't let ANYBODY, let alone a registered BONAFIDE company, make outrages claims or unreal claims in there advertising that cannot be supported or proven. They selll these things over here and they would be "run outa town" before to long and wouldv'e been a long time ago(at least 1 1/2 years ago).
There website is NOT new and has been around for a while, long enough for the "right" people to notice any that might be "rotten in Denmark"(sorry about the use of so many cliches but they are a quick descrption for the matter).
Mr K Reeve has been proposing his presenting his
product and testing it around with many differing situations. The F.Hound has got what I once said is "new and fresh" possibilities for metal detecting. That is what it is.........I think anyhow.
I wish for anyone to know that this NOT a "cash for comment" statement and this opinion is comming from someone who has absolutely NO connections or a vested interest in companies associated with Reeve Jones, but I would bet I am right about it this product, because it is REAL and HONEST.
Hardnosed
 
you just must have missed it. <img src="/metal/html/wink.gif" border=0 width=15 height=15 alt=";)">
Hardnosed
 
Question is: Has anyone been using it ?
I haven't read any mention of it at all.
Bill
 
Hi Tony,
From the information on the website, the Ferrous Hound is a compact gradiometer type of magnetometer, that can be attached to an existing metal detector. Such a scheme can work well in many situations, particularly on larger ferrous items. In my experience, small pins, wire, fish hooks, etc. often do not give sufficient signal for even a sensitive magnetometer to react to, at the range required. Magnetometers are not great for pinpointing, the signal peak often being displaced from the physical location of the target. Also, a non-ferrous target close to a nail or hotrock could result in the user deciding not to dig. It would be interesting to hear if it has been used on WA goldfields, or on the beach, although I read that the head may need extra waterproofing.
Nice gold chain you found recently.
Eric.
 
It seems that the discussion concentrates very much on the 'ferrous hound'. That's interesting but rather limited in scope.
Are there any other ideas or links that could be given about the original question? i.e. <span style="background-color:#ffff00;">A discriminating PI machine</span>.
 
Eric,
Yes, there doesn't seem to be any feedback from actual user's of the device. From my experience in the goldfields, it's the small pieces of iron that need to be discriminated out as big pieces of iron don't stay big for long !! Then there's the millions of lead shot/bullets and brass casings that are everywhere. Your last statement is all too true.....I have dug up a nice gold ring and laying right next to it in the scoop was a similar sized iron bolt. As you no doubt are aware of, similar sized/weight objects do get bunched together in the water so the "hound" is not for me.....Tony. <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Eric, we are eager to test the ID capabilities of our PI prototype against a mineralized soil of any type. Could you recommend a method to simulate such a ground for preliminary lab tests? I have read somewhere that clay bricks could be sufficiently close since the cooking of clay generates ferro-magnetic deposits. Is it true for ANY type of bricks?
Willy
 
Thinking on discrimination and what it would do to beach hunting...
The fact that gold items are 1 to every 400 to 4000 items you dig...(this is not talking about SOBE)...that keeps the number of detector people down.
The fact that gold items sound off like pulltabs...keeps the numbers of detector people down.
The fact that a person can buy the best detector and it can have a disc. system that allow the guy to shut off pulltabs...Keeps the gold items in the ground.
Now when they (The detector people) find out that it is work most of the time to fun only sometimes...Keeps the numbers of detector people down.
When they finally get detectors that one can see the target and know what it is....The beaches will have so much trash on them because no detector people will be gathering it up and dumping it for them. AND when this happens detecting will have no fun left in it for us....
Conclusion: The things that we don't enjoy digging are the things that allow us to continue having fun. Frank
 
State of the art "proven" metal discrimination on a PI detector. Hmmm. Haven
 
Thank you, Mr Bill for the info.
I think that we could already be happy if the ferrous objects would be positively identified as such (<span style="background-color:#ffff00;">not rejected </span>because one must choose to dig or not based on his own decisions.
ID'ing specific items (like a coin of a given type, why not of a given date?) is, I think, an illusion when using PI. Personnally, I even doubt about that capability for VLF machines.
Willy
 
I would agree normally "Great Words , but I have just returned from the beach with 50-60 ring pulls and two dozen bottle tops. The anoying thing is I knew what they were nearly every time.
 
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