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Water Level Sensing Solution for 1mm rise in water level

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We are working on water level sensing application, we tried with custom designed capacitive sensor design with NE555 and 8 bit counter ic but is giving just 4mm resolution in water level sensing. We need to detect 1mm rise in water level, Do you have any solution for this?

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  • Omkar,

     Can you please provide more information about this design?  What is the cap sensor you are using?  A TI device?  A block diagram would be very helpful.  Here is also an App Note on Liquid Level Detection: www.ti.com/lit/an/snoa935a/snoa935a.pdf .

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