Water purifier tanks are made of diverse materials (PP, ABS, AS plastic, Glass), with wall thicknesses typically ranging from 1-10mm. Selection requires matching sensitivity. A non-contact liquid level sensor is not a "universal sticker"; the detection distance must be adjusted according to the diel
Water purifiers with heating or cooling functions create a significant temperature difference inside and outside the tank, making the inner wall highly susceptible to condensation or even water films. This is a fatal interference for optical sensors relying on light refraction, often resulting in fa
With the penetration of IoT technology into water purifiers, simple "on/off" detection is no longer sufficient. OEMs require stable, bounce-free level signals for MCU acquisition. The signal quality of a non-contact liquid level sensor is crucial.The capacitive sensors from Shenzhen Xingkechuang Tec
The core selling point of a water purifier is "purification." If a level sensor releases trace substances or harbors biofilm due to long-term immersion, the cure is worse than the disease. Capacitive non-contact liquid level sensors solve this hidden danger by externalizing the sensing surface.Produ
Traditional level detection requires drilling, tapping, or embedding nuts into water purifier tanks to secure the probe. This not only increases mold costs but also poses a leakage risk due to aging seals. Non-contact liquid level sensors have revolutionized installation logic.The capacitive sensor
Mechanical float switches were once prevalent in water purifiers due to their low cost, but their physical structure dictates three major flaws: first, the pivot point is prone to accumulating scale, causing it to jam; second, long-term immersion can breed bacteria, threatening drinking water safety
Modern smart water purifiers (especially countertop, installation-free models) are usually equipped with a raw water tank (inlet) and a purified water tank (outlet/pressure barrel). It is necessary to implement dual logic: "shut down when raw water is low" and "stop pump when purified water is full.
The core of a non-contact liquid level sensor lies in the variation of an electromagnetic "field." The capacitive principle is based on the parallel-plate capacitor formula. When the sensor probe is tightly attached to the outer wall of a non-metallic water purifier tank (PP/ABS/Glass), the containe
