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Can anyone tell me about how the pi's work and are they better

Pulse Induction detectors excel in highly mineralized ground (at least the ones with ground balance). They do excellent in salt water and really like to detect gold.

They are considered time domain technology. They send out a high energy pulse then while the pulse is off the receive coil and circuit captures the return eddy current produced on the metal and the amount of time it takes for the energy from the metal to decay is measured.

Check out the Finds PI forum for more and better info.

Frank
 
Hi,

Great explanation of PI units at http://www.deeptech-bg.com/Understanding%20The%20PI%20Detector.htm

PI units excel in mineralized conditions that give normal units fits. In low mineral conditions they offer minimal benefit, especially because they have crude discrimination compared to other types of detectors. Even in low mineral conditions they can get more depth, however, becasue they can run much larger coils than VLF units.

Steve Herschbach
 
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