Membraneless vs. membrane-covered residual chlorine sensors: core difference analysis and selection guide for online tap water monitoring

Residual chlorine is the key "guardian" after disinfection of tap water. Accurate monitoring of its content is directly related to the safety of water supply quality and the health of residents' drinking water. YuanGan Technology simultaneously launched two core products, the film-free residual chlorine sensor and the membrane-covered residual chlorine sensor, both of which have been widely used in the field of online monitoring of residual chlorine in tap water. But what exactly is the difference between the two? Faced with complex tap water monitoring scenarios, how to accurately select one?

Video explanation:

If the monitoring scene is urban municipal water supply, piped drinking water, etc. with excellent water quality, with few impurities and low turbidity in the water, choosing a film-free residual chlorine sensor can meet the needs of accurate monitoring; if the water quality is more complex (such as agricultural drinking water, etc., which may have high turbidity and many impurities), it is recommended to give priority to a membrane-covered residual chlorine sensor with stronger anti-interference.

The membrane-free residual chlorine sensor does not need to replace the membrane head and electrolyte. It is easy to operate and has low maintenance costs. It is especially suitable for small water plants, community water supply stations and other scenarios that lack professional instrument operation and maintenance personnel. The coated residual chlorine sensor requires regular replacement of consumables and is relatively complicated to operate. It is more suitable for large water plants and water groups with professional operation and maintenance teams.

It is necessary to focus on evaluating the chlorine continuity of monitored water samples: if there is a possibility of long-term chlorine outage (more than 48 hours) (such as equipment maintenance, temporary water outage, etc.), it is necessary to resolutely avoid the use of membrane-covered residual chlorine sensors to prevent damage to the membrane head; membrane-free residual chlorine sensors have low requirements for chlorine continuity and can adapt to such intermittent monitoring needs.

From the comprehensive consideration of procurement and operation and maintenance costs, film-free residual chlorine sensors not only have a lower initial purchase price, but also have no subsequent consumable replacement costs and are more cost-effective. If the budget is sufficient and the scene requires stronger anti-interference capabilities, you can choose a membrane-covered residual chlorine sensor.

Video explanation:

In summary, film-free residual chlorine sensors are more suitable for scenarios with excellent water quality, limited operation and maintenance capabilities, and cost-sensitive scenarios; membrane-covered residual chlorine sensors are more suitable for scenarios with complex water quality and stable anti-interference monitoring. It is worth mentioning that the latest self-cleaning film-free residual chlorine sensor launched by YuanGan Technology has broken through the limitations of traditional film-less sensors through technological upgrades. It can well cope with complex scenarios with large fluctuations in water quality, and provides users with a new choice of "low cost + strong adaptability".

If you encounter other problems during sensor installation, calibration or use, please feel free to consult the remote sensing technical team and we will provide you with professional support! Service hotline: 400-1688667.