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KNF-400PRO Integrated Multi Parameter Water Quality Sensor Self Cleaning 6 Parameters RS485 MODBUS

Categories Multi Parameter Water Quality Sensor
Payment Terms: T/T
Dissolved Oxygen Range: 0-50 mg/L or 0-500% saturation, fluorescence method
Full Load Power: 0.8W without brush rotation, 2W with brush rotation
MOQ: 1 Piece
Turbidity Range: 0-1000 NTU or 0-4000 NTU, 90 degree scattered light
Power Supply: DC 12-24V, 1A or above
Calibration: On-site calibration, calibration data stored inside the probe
Packaging Details: KNF branded export carton with shock-proof foam, probe size 65mm x 430mm, waterproof 10m cable included
Temperature Range: 0-50 C, chip-type sensor
Housing Material: POM
Cleaning Brush: Auto cleaning every 30 minutes by default, interval customizable
Output: Continuous RS-485 output, MODBUS protocol
Protection Level: IP68
Model Number: KNF-400PRO
Place of Origin: Guangdong, China
Cable Length: 10 meters default, customizable
Supply Ability: 1000 Pieces per Month
Depth Range: 0-20 m, strain gauge type
Dimensions: Diameter 65mm x 430mm including protective cover
Certification: ISO 9001
pH Range: 0-14 pH, glass electrode method
Brand Name: KNF
Delivery Time: 7-15 working days
Measurement Parameters: Dissolved Oxygen, pH, Conductivity, Turbidity, Depth, Temperature
Conductivity Range: 0-200 mS/cm four-electrode EC, salinity 0-175 ppt, TDS 0-128000 mg/L
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KNF-400PRO Integrated Multi Parameter Water Quality Sensor Self Cleaning 6 Parameters RS485 MODBUS

KNF-400PRO Integrated Multi-parameter Water Quality Sensor

The KNF-400PRO multi-parameter sensor adopts a compact integrated design for a single unit, enabling simultaneous monitoring of six water quality parameters including dissolved oxygen, pH, conductivity, turbidity, depth and temperature. The sensor is equipped with an automatic cleaning brush that cleans the measurement surface of attached substances, removes bubbles and inhibits microbial growth, effectively ensuring the stability and accuracy of long-term online measurement.

It comfortably meets the monitoring requirements of various water environment conditions such as wastewater treatment, surface water, marine environment and groundwater. After years of market validation and continuous technological iteration, the entire machine offers excellent long-term stability and reliability, allowing for continuous unmanned operation with a maintenance cycle of up to several months.

Sensor Features

  • Full digital sensor with RS485 output and standard MODBUS protocol
  • Supports on-site calibration - highly flexible and capable of adapting to different water qualities, further enhancing measurement accuracy
  • Can be directly immersed in the measured water body, suitable for all-weather, uninterrupted online monitoring, simplifying system configuration
  • Equipped with an automatic cleaning device to effectively prevent biological adhesion and dirt deposition, significantly reducing maintenance and the frequency of manual cleaning
  • Integrated body design capable of monitoring six parameters including dissolved oxygen, pH, conductivity, turbidity, depth and temperature

Technical Specifications

Product NameKNF-400PRO Integrated Multi-parameter Sensor
Measurement ParametersUp to 6 parameters monitored with 1 central cleaning brush
Measurement Depth0-20 m
SizeDiameter 65mm x 430mm (including protective cover)
Temperature Range0-50 C
Protection LevelIP68
OutputContinuous RS-485 output, MODBUS protocol
CalibrationCalibration data stored inside the probe, supports rapid calibration of the entire machine
Brush ControlDefault clean every 30 minutes, interval customizable
Full Load Power0.8W (without brush rotation), 2W (with brush rotation)
Power SupplyDC 12-24V, 1A or above
Cable LengthWaterproof connectors, 10 meters (default), customizable
MaterialPOM

Sensor Measurement Details

ParameterMeasurement PrincipleMeasurement Range
Dissolved OxygenFluorescence method0-50 mg/L or 0-500% saturation
Turbidity90 degree scattered light0-1000 NTU or 0-4000 NTU
Conductivity (Salinity)Four-electrode EC0-200 mS/cm (0-2, 2-20, 20-200 mS/cm); Salinity 0-175 ppt; TDS 0-128000 mg/L
pHGlass electrode method0-14 pH
DepthStrain gauge type0-20 m
TemperatureChip-type-5-50 C

Applications

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

For OEM/ODM customization, bulk pricing and technical support, please contact our sales team.

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