as Cx increases because rising liquid level increases capacitance between the liquid and an insulated probe. Figure 3 Liquid level sensor using the CD4013B. Stephen Woodward’s relationship with EDN’s ...

Users can put the sensor part of the transmitter directly into the liquid, and the transmitter part can be fixed with flanges or brackets. A capacitance-level transmitter is suitable for ...

Happily there is a solution in the form of capacitive sensor probes ... This can be measured to gain a reading of the soil moisture level. The probe is fitted with a 3.3 V LDO regulator, which ...