Happily there is a solution in the form of capacitive sensor probes, and it is these that [Electrobob] is incorporating in to a home automation system. Unfortunately the commercial capacitive ...

Capacitive sensors, on the other hand, can be isolated from the water itself, and thus sense the levels without being subject to such degradation. [Magnus] pairs the off-the-shelf capacitive ...

Two complementary sensor technologies will be discussed in detail in this chapter: capacitive electric field based, and inductive (eddy current) electromagnetic field based. Figure 8.1.1: Noncontact ...