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KNF-500PRO Online Multi-Parameter Water Quality Sensor 6 Probes RS485 MODBUS IP68 Self-Cleaning

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KNF-500PRO Online Multi-Parameter Water Quality Sensor 6 Probes RS485 MODBUS IP68 Self-Cleaning

Cleaning : Automatic brush, default every 30 minutes, interval settable

Housing Material : POM, titanium alloy, anti-fouling copper

MOQ : 1 Set

Brand Name : Kainafu

Payment Terms : T/T

Product Name : Kainafu KNF-500PRO Multi-parameter Water Quality Sensor

Protection Level : IP68

Place of Origin : Guangdong, China

Probe Capacity : Up to 6 probes (7 parameters) + 1 central cleaning brush

Weight : 2.3 kg (mother unit + 6 sensors)

Power Consumption : 0.8W (no brush) / 2W (brush rotating)

Delivery Time : 7-15 working days

Model Number : KNF-500PRO

Certification : ISO 9001:2015

Supply Ability : 500 Sets per Month

Output : Continuous RS-485, MODBUS protocol

Dimensions : 84 mm x 476 mm

Power Supply : DC 12-24V >=1A (whole machine); 9-24V >=1A (single probe)

Cable Length : 10 m default, customizable, waterproof connectors

Measurement Depth : 0-30 m (pH / ORP 20 m)

Packaging Details : Kainafu branded carton with shock-proof foam insert, export-grade corrugated box

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KNF-500PRO Online Multi-Parameter Water Quality Sensor

The Kainafu KNF-500PRO online multi-parameter sensor adopts a multi-in-one modular structure. Each single-parameter sensor is an independent RS485 digital probe that seals water-tightly onto the main body. Calibration data is stored inside each probe, allowing simple on-site calibration or replacement. It measures water temperature, pH, ORP, dissolved oxygen, turbidity, chlorophyll, cyanobacteria, conductivity (salinity), water oil, ammonia nitrogen and depth — supporting up to 6 probes / 7 parameters on one main body.

Key Features

  • RS485 output, standard MODBUS protocol — easy connection to data acquisition platforms and automatic water quality monitoring stations.
  • Up to 6 freely selectable probes — DO, conductivity (salinity), turbidity, pH, ORP, chlorophyll, cyanobacteria, water oil, ammonia nitrogen and depth can be combined on demand.
  • Automatic cleaning brush — cleans at set intervals to remove bubbles and contamination, ideal for long-term unmanned online monitoring.
  • Field-replaceable probes — each probe can be removed for direct calibration, replacement and maintenance.
  • Efficient acquisition & alarms — fast response, with power-supply, communication and cleaning-brush abnormal alarms built into the mother unit.
  • IP68 protection — robust titanium alloy / POM / anti-fouling copper construction for wastewater, surface water, marine water and groundwater.

Technical Specifications

Product Name Kainafu KNF-500PRO Multi-parameter Water Quality Sensor
Probe Capacity Up to 6 probes (7 parameters), 1 central cleaning brush
Measurement Depth 0-30 m (pH / ORP 20 m)
Size 84 mm × 476 mm
Weight 2.3 kg (mother unit + 6 sensors)
Output Continuous RS-485, MODBUS protocol
Cleaning Automatic brush, default every 30 minutes (interval settable)
Power Supply DC 12-24 V, ≥1 A (whole machine); 9-24 V, ≥1 A (single probe)
Power Consumption 0.8 W (brush off) / 2 W (brush rotating)
Protection Level IP68
Cable Length 10 m default (customizable), waterproof connectors
Material POM, titanium alloy, anti-fouling copper

Install sensors

Parameters

Measurement principle

Measurement range

Precision

Material

Dissolved oxygen

Fluorescence method

0-50 mg/L or 0-500% Saturation

0-20mg/L :±1%or±0.2mg/L(Whichever is greater); >20mg/L :±5% or ±0.6mg/L

Titanium alloy

Turbidity

90° scattered light

0-1000NTU or 0-4000NTU

±5% or 0.3NTU(Whichever is greater)

Titanium alloy

Conductivity (Salinity)

Four-electrode

EC:0-200mS/cm(Optional 0-2mS/cm,2-20mS/cm,20-200mS/cm);Salinity:0-175ppt; TDS:0-128000mg/L

EC:±1% or 0.01mS/cm(Whichever is greater); Salinity:±1ppt

Titanium alloy+PEEK

Water oil

Ultraviolet fluorescence method

0-50ppm或 0-150ppm

Linearity R²>0.999

Titanium alloy

pH

Glass electrode method

0-14 pH

±0.02 pH

Titanium alloy+POM

ORP

Platinum electrode method

-1999-+1999mV

±20mV

Titanium alloy+POM

Chlorophyll

Fluorescence method

0-500μg/L

±5% or 0.5μg/L(Whichever is greater); Linearity R²>0.999

Titanium alloy

Blue-green algae

Fluorescence method

‌0 ~ 300,000 cells/mL(Customizable up to 0-2,000,000)

±10% or ±0.5mg/L(Whichever is greater)

Titanium alloy

Ammonia nitrogen

Ion electrode method

0-100mg/L(Optional0-1000mg/L)

<0.1%F.S.

Titanium alloy+POM

Depth

Pitot-type

0m-2m...100m(Optional)

<0.1%F.S.

316L(Optional Titanium)

Temperature

Thermistor

-5-50℃

±0.2℃

/

Applications

Wastewater treatment plants, surface water and river monitoring, marine water, groundwater, aquaculture, and drinking-water sources requiring long-term unmanned online monitoring.

Contact us for OEM options, probe combinations and bulk pricing.


Product Tags:

Multi parameter water quality sensor RS485

      

Water quality sensor MODBUS self-cleaning

      

IP68 water quality sensor 6 probes

      
Quality KNF-500PRO Online Multi-Parameter Water Quality Sensor 6 Probes RS485 MODBUS IP68 Self-Cleaning wholesale

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