Find's Treasure Forums

Welcome to Find's Treasure Forums, Guests!

You are viewing this forums as a guest which limits you to read only status.

Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.

Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.

Click here to register!



Need Support Help?

Cannot log in?, click here to have new password emailed to you

What determines PI sensitivity to gold?

A

Anonymous

Guest
Is it strictly a matter of pulse delay rate?
Will a 15usec. machine always be more sensitive to gold than a 22usec. PI? Does anyone know
the pulse delay rates of the Whites PI,
Garrett Seahunter MK II, Tesoro Sandshark, or
Headhunter PI?
 
Hi Ed,
You really have to qualify your question as to what form the gold takes. Gold nuggets, gold rings, gold bars? You then have to state a range of sizes and purity over which you want the detector to be efficient. For example a detector designed to be sensitive to small nuggets, thin gold chains, thin 9k rings, will not be so good on gold coins, gold bars or
 
Does wading usually allow the shortest delay of 10 or 15uS ? Or are this times dedicated for nugget hunting and dry sand hunting only ?
In other words, as conductivity of the environment do we intend the environment of the coil or the whole zone surrounding the detector?
Thanks
 
Hi Seric,
You can certainly use 15uS when wading and sometimes 10uS, depending on the depth and salinity. In fairly still water up to a couple of feet deep 10uS can be used. Beyond that, the conductivity of the water gives too big a signal and the delay has to be retarded. Sooner, if there are waves.
The magnetic field of the coil extends outwards for many feet, and excites a very large volume of water. That is why something that is a relatively very poor conductor can give a strong signal.
Eric.
 
Top