Optical Level Sensor Empowers Smart Water Purifiers: From 'Having Liquid Level' to 'Precise Perception

Liquid level detection may seem simple, but it directly affects user experience and equipment safety. Recently, a leading domestic smart water purifier brand has fully adopted Optical Level Sensors in its new countertop, no-installation model. This successfully addressed the issues of traditional float switches being prone to jamming, false alarms, and difficulty in cleaning, achieving precise digital management of the water tank's liquid level.

The liquid level detection of the raw water tank and waste water tank in smart water purifiers has long faced two major pain points: first, traditional mechanical float switches are prone to jamming due to limescale or impurity buildup, leading to false low-water alarms or overflow risks. Second, they cannot output continuous liquid level signals, only switch quantities, making it difficult to implement intelligent functions such as remaining water volume percentage display and filter life linkage.

The Optical Level Sensor has demonstrated unique value in this project:
1、Contactless and Jam-Proof
The sensor is mounted on the water tank's outer wall or integrated into an independent chamber, avoiding direct contact with the water. This completely eliminates mechanical failures caused by scale buildup, reducing the overall repair rate by approximately 70%.
2、Multi-Level Liquid Signal Output
By installing multiple sensors at different heights on the same water tank, the system can obtain four liquid level information levels: 'Low', 'Medium', 'High', and 'Overflow'. Combined with control algorithms, it displays the remaining water volume percentage accurately on the screen and provides dual protection: 'Automatic shutdown when water is low' and 'Automatic stop of water production when full'.

3、Simplified Cleaning and Maintenance
Since the sensor does not need to be immersed in the water tank, users can easily disassemble the tank for cleaning without worrying about damaging the detection components, significantly enhancing product usability.
According to feedback from the R&D head of the water purifier brand: "After adopting the Optical Level Sensor, not only has product reliability been greatly improved, but a differentiated selling point of visual water volume display has also been added. In post-launch user reviews, 'Accurate liquid level display' and 'No false alarms' have become frequent positive comments.
4、Application Expansion
Leveraging the flexible installation characteristics of this model, customers from multiple fields such as coffee machines, floor scrubbers, and medical waste collection systems have already initiated import verification. In the future, HojellyTek will continue to focus on optical sensing technology to provide 'Clean, Accurate, and Intelligent' liquid level detection solutions for more industries.
Conclusion
To learn more about industry application cases of the Optical Level Sensor or to request a sample for testing, please visit the official website product page or leave us a message.