In response to many requests, the XP innovation forge around Alain Loubet has produced this concentric search coil in spider design as a supplement to the double-D series.
The display behaviour is somewhat faster and more concise than with the 22.5 cm series coil, so the concentric spider has particular advantages with small metal objects. It is also easier to find the located metals below the coil. The swivelling speed is increased and so is the overall search speed.
Compared to the double-D coil, the spider coil is significantly less susceptible to interference. In our tests, it was even possible to detect directly at a current changeover switch without interference.
Compared to the double-Dseries coil , the detection fieldtapers towards the bottom so that a better separation of debris points is possible.