Online Free Chlorine Sensor Manufacturer for Water Treatment
LOOTEST manufactures online free chlorine sensors, residual chlorine sensors, chlorine analyzers, chlorine probes and controller systems for drinking water disinfection, water treatment plants, swimming pools, process water, beverage bottling and OEM dosing control projects. Free chlorine and residual chlorine monitoring help operators verify disinfectant levels, control dosing pumps and maintain stable disinfection performance.
For B2B purchasing, LOOTEST can support sensor selection, chlorine controller matching, sample testing, bulk supply, OEM/ODM cooperation and R&D customization according to disinfectant type, water condition, measuring range, installation method and signal output requirements.
- Online free chlorine, residual chlorine, chlorine dioxide and ozone monitoring options for water treatment and disinfection control.
- Chlorine sensor, chlorine analyzer, chlorine controller and chlorine transmitter options for continuous water quality monitoring.
- RS485 Modbus, 4-20mA, relay output and controller options for PLC, SCADA, dosing pumps and remote monitoring.
- OEM/ODM support for distributors, system integrators, equipment builders and project-based water quality monitoring requirements.
Free Chlorine Sensors, Analyzers, Controllers and Transmitters
Free chlorine sensors and residual chlorine analyzers are used to monitor disinfectant concentration in water after chlorination. In drinking water systems, online chlorine monitoring helps confirm disinfection residual. In dosing control systems, chlorine sensors can help control pumps, alarms and process stability. In swimming pools, beverage plants and industrial water treatment, chlorine measurement supports sanitation control and water safety management.
LOOTEST can provide amperometric chlorine sensors, residual chlorine electrodes, chlorine analyzers, chlorine controllers and transmitters according to water type, pH condition, temperature, measuring range, installation position and maintenance plan. Online chlorine sensors can be matched with RS485 Modbus, 4-20mA, relay output, PLC, SCADA, dosing pumps and OEM water quality monitoring equipment.
Free Chlorine Sensor Applications
Drinking Water Disinfection
Monitor free chlorine or residual chlorine in drinking water treatment, pipeline networks and secondary water supply systems.
Dosing Control Systems
Use chlorine sensors and controllers to support chemical dosing, alarm output, PLC integration and disinfectant control.
Wastewater and Reuse Water
Track residual chlorine after disinfection, reuse water treatment and discharge monitoring in wastewater projects.
Pools and Environmental Stations
Add chlorine monitoring to swimming pools, public water facilities, reservoirs and remote water quality monitoring stations.
How to choose an online chlorine sensor supplier
For B2B purchasing, chlorine sensor selection should start with the disinfectant and water condition. Confirm whether the project needs free chlorine, residual chlorine, chlorine dioxide or ozone monitoring, then check pH range, temperature, measuring range, installation method, flow cell requirement, cleaning frequency, output signal and controller configuration. A stable online chlorine sensor should match both the disinfection process and the maintenance conditions of the site.
- Drinking water: choose a free chlorine or residual chlorine sensor suitable for pipeline monitoring, treated water and secondary water supply systems.
- Dosing control: confirm whether the chlorine controller needs relay output, 4-20mA, RS485 Modbus, dosing pump control or alarm functions.
- Industrial process water: check chemical compatibility, flow stability, pressure, temperature and installation structure before selecting a chlorine probe.
- Swimming pools and public facilities: select a chlorine analyzer that can support continuous disinfectant monitoring and routine calibration.
- OEM projects: confirm sensor size, cable length, signal output, controller matching, sample availability and bulk supply requirements.
FAQ for free chlorine sensors and B2B supply
What is a free chlorine sensor?
A free chlorine sensor measures the disinfecting chlorine available in water. It is commonly used in drinking water, swimming pools, process water, dosing control and disinfection monitoring systems.
What is the difference between free chlorine and residual chlorine?
Free chlorine usually refers to active chlorine available for disinfection. Residual chlorine is often used more broadly to describe chlorine remaining in water after treatment, depending on the local standard and measurement method.
Why monitor residual chlorine in drinking water?
Residual chlorine monitoring helps verify that enough disinfectant remains in treated water and distribution systems. It supports drinking water safety, dosing control and compliance management.
Can chlorine sensors control dosing pumps?
Yes. With a matched chlorine controller or analyzer, online chlorine sensors can support relay output, 4-20mA or RS485 Modbus signals for dosing pumps, PLC, SCADA and alarm systems.
Do chlorine sensors require pH compensation?
Some chlorine measurement applications are affected by pH, temperature, flow rate and water chemistry. The final sensor and analyzer selection should consider the water condition and disinfectant type.
Where are online chlorine analyzers used?
Online chlorine analyzers are used in drinking water plants, secondary water supply, swimming pools, beverage bottling, industrial disinfection, wastewater reuse and process water treatment.
Can LOOTEST provide OEM or ODM chlorine sensor solutions?
Yes. LOOTEST can support OEM/ODM cooperation, controller matching, cable length adjustment, measuring range selection, signal output matching and R&D support for B2B water quality monitoring projects.
LOOTEST supports online free chlorine, residual chlorine, chlorine dioxide and ozone monitoring options for disinfection control and water treatment projects.
Chlorine analyzers and controllers can support dosing pump control, relay alarm output and continuous disinfectant monitoring.
Online chlorine sensors can be matched with RS485 Modbus, 4-20mA, controllers and transmitters for PLC, SCADA and remote monitoring systems.
For distributors, system integrators and OEM equipment builders, LOOTEST supports sample testing, bulk supply, ODM cooperation and R&D customization.
Need a free chlorine sensor manufacturer?
Share your disinfectant type, water condition, pH range, measuring range, installation method, controller requirement, signal output and quantity plan. LOOTEST can help compare free chlorine sensors, residual chlorine analyzers and chlorine controller options for sample orders, bulk supply and OEM/ODM projects.
