There are more and more gold metal detectors on the market now. It is important for us to know the basic working theory of the underground metal detector before we choose a good quality metal detector.

The treasure hunting metal detector adopts electromagnetic induction working theory. The magnetic field will change when there is AC current going through the metal detector search coil. And the changed magnetic field will cause an eddy current. This eddy current will cause a new magnetic field and affect the original magnetic field. Then the super gold finder metal detector will sound alarm because of the changed magnetic field.

The accuracy and dependability of the deep search metal detector depends on the stability of the EM launcher frequency. Deep earth underground metal detector usually adopts 80-800 kHz working frequency. Lower working frequency gold metal detector is good for iron. High working frequency underground gold metal detector is good for high-steel carbon. Pulse induction metal detector working sensitivity is lower as detection area bigger. Metal detector gold finder detection signal depends on the target object size and conductivity.

We mainly focus on two points when choose a metal detector. First it is the long range metal detector public praise and people reviews of the gold metal detector long range. Second it is how you will use the industrial metal detector. Different used gold metal detector is suitable for different market.

So we can’t just go for high power and deep earth machine. Normally, treasure hunter metal detector detection depth is within 3-5 meters. Do not be fooled by undesirable businessmen.