@bjacobse Thanks for the reply. I want to count no. of copper wire loops only. Because the distance between loops varies.

@hard-shovel Thanks for the reply. The Ir sensor will detect both mesh and copper wire. How to count the no. of copper wire loops?? I don't understand..Can you please elaborate...

@kimot thanks for the reply. Yes we have tried with 30mm sensing range inductive proximity sensor... It's not working on copper.

@mrrobots Thanks for the reply. I don't have much knowledge about injecting RF signal. Please give me more inputs.

please see picture, the wire lies under Fibre glass mesh, When the mesh moves I have to count no.off copper wire loops. Please suggest suitable sensor.