In both residential and commercial water purification systems, the issues of water tank overflow and dry burning caused by low water levels have long plagued equipment manufacturers and end-users. Traditional mechanical float switches are prone to jamming, and optical sensors are easily disturbed by scale, leading to inaccurate level judgments. The emergence of non-contact liquid level sensors has changed this landscape.
The capacitive non-contact liquid level sensor developed by Shenzhen Xingkechuang Technology Co., Ltd. utilizes the principle of dielectric constant sensing. The sensor detects water levels by directly adhering to the outer wall of the container (贴在容器外壁检测), eliminating the need for drilling or penetrating the water tank. When the water level rises, the dielectric constant of water (approximately 80) differs significantly from that of air (approximately 1), causing a detectable change in capacitance. The probe captures this change and outputs a signal, prompting the control board to immediately cut off the water inlet valve.
This external mounting solution is optimized by Shenzhen Xingkechuang Technology Co., Ltd. for the compact spaces within water purifiers. The sensing surface is encapsulated in food-grade insulation, preventing secondary pollution of the water quality. It achieves zero physical wear and a long lifespan (theoretically over 10 years), making it an ideal choice for high-end water purifier tank level detection.
