Pulse Induction Metal Detector

What are Pulse Induction metal detectors (PI) and how can they help in your metal detecting hunting?

Pulse induction means that you are creating an electromagnetic pulse that exits the coil, bounces off a target, then returns to the coil giving a report on the target it hit.
Pulse induction detectors are usually more sensitive to smaller and deeper targets. The down side is they also pick up more trash targets and have a difficult time telling good targets apart from bad targets.

There are a lot of positives with pulse induction metal detectors including;

  • The ability to ignore both conductive and non-conductive mineralization
  • Maintaining high sensitivity to all metal targets
  • Their detection range is not affected by the medium between the coil and the target.
  • Little to no loss in performance in water, sand, silt, solid coral and generally speaking, the air

In all things there is no free lunch so what are the negatives?

  • Extreme sensitivity to all metal targets which means digging more junk
  • Difficulty of pinpointing targets.

One of the best use for PI metal detectors is for gold prospecting, Civil War relic hunting and bottle digging ventures because they go very deep and are not negatively impacted by high mineralization deposits at the site.
Another great use if as an underwater detector, especially in salt water beaches and while diving. Pulse induction detectors transmit a series of electronic pulses to the water and unlike other detectors, they are not affected by the water, or sand or the minerals that are present underneath, but are are sensitive when it comes to metals.

In conclusion, a pulse detection metal detector is probably not going to be a primary detector but it can serve as a very powerful specialized tool if you are in high mineral areas, salt or fresh water or looking at deep levels.  A PI detector does require a major shift in usage compared to a traditional detector so you may want to seek guidance from a local shop before spending a lot of money on a unit to later find out it is too finicky for you to use.  Also, these detectors can be found inexpensively as people get frustrated in using them.  Don’t let this scare you.  It just takes some practice and becoming accustomed to adjusting the sensitivity settings to the area you are detecting in.

Tags: ,

Category: Metal Detecting Tips

Comments are closed.