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Measure thickness

Eduardo Ban
Prodigy 150 points

I need to measure the variation of the thickness of a steel plate 10mm thick and long indefinite (a pipe), putting fixed at a distance of 0.5cm or 1cm of the surface coil. Immersed in a liquid such as water, the coil would be inserted into a plastic box without contact with the liquid.
One could measure variations in the thickness of the plate at steps steel plate moves.
In that range the smaller the better measure the value if it is in the order of microns would be excellent.

thanks

  • 0
    TI__Genius 13650 points

    Hello Eduardo,

    sensing the thickness of a 10mm thick steel plate will be very challenging and will require a very large coil. It is very difficult to penetrate 10mm of steel. For further information on sensing through metal, please refer to the post "What are the general guidelines for sensing a target through metal?" on the inductive sensing FAQ

  • 0 in reply to Ben Kasemsadeh
    Prodigy 150 points

    Hello Ben

    I did not explain well, is to measure the variation in the distance as the steel rod moves, is to measure the variations in the internal diameter of the pipes, need to measure very small variations near the micron.
    The separation distance to the edge of the pipe may be 10mm or less, fits, I need to determine the maximum and minimum retire exis    ting in the distance with an accuracy of micron. I sent a picture for clarity.

     

     


     

  • 0 in reply to Eduardo Ban
    Prodigy 20 points

     A  lot of different devices are available like vernier caliper and screw gauge. These are such devices which provide you more accurate results.

  • 0 in reply to Johan andreson
    Prodigy 150 points

    Hello Johan

    If true, there are a lot of vernier caliper and screw gauge, for measurement need to be in contact with the surface to be measured.
    Need that the measurement system is separate from the measurement surface, if there is contact with the surface and the reference point (in this case the coil). Could be an ultrasound system, I was seeing if this technology can be applied and that quality and accuracy.