In the design of smart water purifiers, level detection for the clean water tank (pure water tank) is a core function for realizing automatic shut-off when full and preventing overflow. Traditional mechanical float switches are prone to failure due to scale buildup after long-term immersion, while photoelectric sensors face the risk of lens contamination.
Shenzhen Xingkechuang Technology Co., Ltd. offers Non-contact Liquid Level Sensors (Capacitive Principle), providing an ideal solution to these pain points. Utilizing capacitive sensing technology, the sensor detects water level changes through the tank wall (typically plastic or glass) by leveraging the significant difference in dielectric constants between water (approx. 80) and air (approx. 1). When the clean tank is full, the sensor responds in milliseconds to output a signal, instructing the control board to cut off the inlet valve or stop water production, preventing overflow at the source. Since the sensor does not contact the purified water, it eliminates secondary pollution and has no mechanical wear, boasting a service life of over 10 years, making it the preferred choice for high-end water purifiers.
