NIVOCAP 2-wire capacitive level transmitters provide an ideal solution for level measurement in both conductive and non-conductive liquids. The instrument’s probe and reference probe operate as opposing plates of a capacitor. As the tank fills, the air between the capacitor plates is replaced by a medium with greater dielectric constant. This causes the capacitance to change in direct proportion to the level. The incorporated electronic circuitry then measures the capacitance difference and converts it into an output signal.