APPARATUS FOR DETECTING WATER LEVEL OF AIR WASHER

摘要

Disclosed is an apparatus to detect a water level of an air washer which minimizes an electromagnetic interference (EMI) created when measuring capacitance, and provides stable electric potential to minimize a measurement error. The apparatus to detect a water level of the air washer comprises: a water level detection bar immersed in a water tank to detect a water level; a reference capacitor connected to the ground to provide a reference capacitance for water level detection; a comparison unit to compare changes in the capacitance of the water level detection bar, and the reference capacitor to output a comparison result; a ground panel installed in a bottom on the outside of the water tank; and a noise removal unit disposed between the ground panel and the ground to remove noise of a reference potential.