News Details

KNF Introduces the KNF-400PRO Integrated Water Quality Sensor for Intelligent Online Monitoring

Guangdong, China — KNF, a manufacturer of reliable water quality monitoring instruments, is pleased to announce the availability of the KNF-400PRO Integrated Water Quality Sensor. This compact, integrated probe combines six water quality parameters in a single body and delivers them through a stable RS485 MODBUS output, giving integrators, OEM partners and system builders a powerful, cost-effective solution for continuous, unmanned water monitoring.

One Integrated Water Quality Sensor, Six Critical Parameters

The KNF-400PRO measures dissolved oxygen, pH, conductivity (including salinity and TDS), turbidity, depth and temperature simultaneously. By consolidating six measurements into one integrated water quality sensor, it dramatically simplifies system configuration, reduces wiring and installation complexity, and lowers the total cost of ownership for large-scale monitoring networks. The integrated body design means fewer probes in the water and a single cable to manage, which is ideal for multi-point monitoring grids and remote stations.

Self-Cleaning Technology Ensures Long-Term Stability

An automatic cleaning brush mounted at the measurement surface removes attached substances, eliminates bubbles and inhibits microbial growth. This self-cleaning design keeps the optical and electrode surfaces in optimal condition, ensuring stable and accurate readings over extended deployment periods. The default brush cycle is every 30 minutes, and the interval can be fully customized to suit specific water conditions and application requirements.

• Full digital sensor with RS485 output and standard MODBUS protocol
• On-site calibration, with calibration data stored inside the probe for rapid whole-machine calibration
• Direct immersion design suitable for all-weather, uninterrupted online monitoring
• Integrated body design covering six measurement parameters with a single central cleaning brush
• Extremely low power consumption, extending maintenance cycles to several months

Technical Specifications

General specifications: measurement depth 0-20 m; dimensions 65 mm diameter x 430 mm including protective cover; protection level IP68; output continuous RS-485 with MODBUS protocol; power supply DC 12-24V at 1A or above; full load power 0.8W without brush rotation and 2W with brush rotation; housing material POM; default 10 m waterproof cable, customizable.

Built for Demanding Water Environments

After years of market validation and continuous technological iteration, the KNF-400PRO offers excellent long-term stability and reliability. It comfortably meets the monitoring requirements of a wide range of water environment conditions, including:

• Wastewater treatment and effluent monitoring
• Surface water and river monitoring
• Marine environment monitoring
• Groundwater monitoring
• Aquaculture water quality monitoring

Certification, Availability and Ordering

The KNF-400PRO integrated water quality sensor is manufactured under ISO 9001 quality management and is available now for global distribution. The product supports OEM and ODM customization, with model number KNF-400PRO and brand name KNF. Standard orders ship within 7-15 working days, with a minimum order quantity of 1 piece and a supply ability of up to 1000 pieces per month.

For OEM/ODM customization, bulk pricing and technical support, please contact our sales team to discuss your project requirements and receive a tailored quotation.