KNF-400PRO Groundwater Quality Sensor: A 6-in-1 Multi-Parameter Probe with RS485 MODBUS and Self-Cleaning Technology

KNF is proud to announce the launch of the KNF-400PRO Integrated Multi-Parameter Water Quality Sensor, a compact all-in-one probe engineered for accurate, long-term groundwater quality monitoring. Combining six essential measurement parameters inside a single IP68-rated body, the KNF-400PRO simplifies sensor deployment, reduces system wiring, and lowers the total cost of building and maintaining groundwater observation networks.

Why Groundwater Monitoring Needs a Smarter Sensor

Groundwater is among the most valuable and fragile natural resources, and its quality directly affects drinking water safety, agriculture and industrial production. Traditional monitoring setups require multiple single-parameter instruments, large cabinets and frequent manual servicing — an approach that is costly, space-consuming and difficult to scale. The KNF-400PRO answers these challenges by integrating dissolved oxygen, pH, conductivity, turbidity, depth and temperature into one intelligent probe with a standard RS485 MODBUS interface.

Key Advantages of the KNF-400PRO

• True 6-in-1 integration: a single probe monitors six water quality parameters simultaneously, greatly reducing installation complexity.
• Automatic cleaning brush: the built-in central brush cleans the measurement surface, removes bubbles and inhibits microbial growth, keeping readings stable over months of unmanned operation.
• Standard RS485 MODBUS output: fully digital communication that integrates easily with existing SCADA, PLC and remote telemetry systems.
• On-site calibration: calibration data is stored inside the probe, allowing fast, flexible field calibration that adapts to different groundwater chemistries.
• Rugged IP68 construction: the POM housing and waterproof connector make the probe suitable for direct immersion in wells, boreholes and surface water bodies.

Technical Specifications

Measurement Performance

The KNF-400PRO delivers dependable accuracy across a wide range of groundwater conditions, as summarized below.

Applications

Engineered for versatility, the KNF-400PRO is widely used in groundwater monitoring wells, wastewater treatment and effluent control, surface water and river monitoring, marine environment observation, and aquaculture water quality management. Its long maintenance cycle and unmanned operation make it especially suited to remote groundwater stations and large-scale monitoring networks.

OEM/ODM and Wholesale Support

KNF offers full OEM/ODM customization, competitive wholesale pricing and professional technical support for system integrators and distributors worldwide. The minimum order quantity is just one piece, with a monthly supply capacity of up to 1,000 pieces and a typical delivery time of 7–15 working days.

For more information about the KNF-400PRO groundwater quality sensor, or to request a quotation, please contact our sales team today.