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FDC2114EVM: Does the water sensor level work for this specific scenario? Please see image in the description.

Part Number: FDC2114EVM

Would the water level sensor be able to sense the level of water in the outer container if there is a constant level of water in the inner container. The sensor is placed inside the inner container, and the amount of water in the inner container is much smaller compared to that of the outside container.

Thanks!

 

  • Hi Patt,

    The sensitivity will definitely decrease - how much will depend on the thickness of the container, the amount of inner water, and also the size/spacing of the level sensors. If the water is seen as a good enough conductor, the FDC may not be able to sense through it regardless of how much of it there is. The best way is to test it out and ensure that the resolution is fine enough for the intended application.

    Thanks,
    Rachel
  • Even if the water is conductive enough, you can still use the sensor if you apply an insulating paint on the electrodes. The problem is how much noise or interference the inner water will do to the measruments, that can be seen just by tryining. I think if you measure the constant capacitance of the inner water (and its stable), and can detect changes when the other water level increases, that would be fine.