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Capacitive Sensing

by leonhart88
Tags: capacitive, sensing
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Mar27-13, 01:23 PM
P: 2
Hi All,

I've been recently reading up on capacitive sensing. Specifically, the case where you have one sensor which is an electrode with a static electric field. When this electrode comes near a conductive target (which is floating and not part of the circuit), the change in potential of the initial electrode can be detected and thus a proximity sensor can be made.

What I am trying to figure out, is if more conductive liquids/materials, result in a larger change of potential and/or capacitance. In other words, will a capacitive sensor work better if the liquid it is trying to detect is more conductive? If so, why?

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