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Multi Parameter Water Quality Sensor

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

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Multi Parameter Water Quality Sensor

Portable Water Quality Analyzer

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Wastewater Monitoring System

Mr. Benjiamingzhang

knfeco@knfsensors.com

+8613926579015

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All Category

Multi Parameter Water Quality Sensor

Portable Water Quality Analyzer

Water Quality Monitoring Equipment

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

Brand Name:	Kainafu
Model Number:	KNF-500PRO
MOQ:	1 Set
Packaging Details:	Kainafu branded carton with shock-proof foam insert, export-grade corrugated box
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

Guangdong, China

Certification:

ISO 9001:2015

Document:

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)

Dimensions:

84 Mm X 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 12-24V >=1A (whole Machine); 9-24V >=1A (single Probe)

Power Consumption:

0.8W (no Brush) / 2W (brush Rotating)

Protection Level:

Cable Length:

10 M Default, Customizable, Waterproof Connectors

Housing Material:

POM, Titanium Alloy, Anti-fouling Copper

Supply Ability:

500 Sets per Month

Highlight:

Multi parameter water quality sensor RS485

Water quality sensor MODBUS self-cleaning

IP68 water quality sensor 6 probes

Product Description

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.

Tags:

PH Sensor

ORP Sensor

COD Sensor

Water Turbidity Sensor

Conductivity Water Sensor

Dissolved Oxygen Sensor

Suspended Solids Sensor

Residual Chlorine Sensor

Ammonia Nitrogen Sensor

Chlorophyll A Sensor

Oil In Water Sensor

Blue Green Algae Sensor

Multi Parameter Water Quality Sensor

Water Level Gauge

Radar Water Level Sensor

Portable Water Quality Analyzer

Water Quality Monitoring Equipment

Aquaculture Monitoring System

River Monitoring System

Wastewater Monitoring System

PH Sensor

ORP Sensor

COD Sensor

Water Turbidity Sensor

Conductivity Water Sensor

Dissolved Oxygen Sensor

Suspended Solids Sensor

Residual Chlorine Sensor

Ammonia Nitrogen Sensor

Chlorophyll A Sensor

Oil In Water Sensor

Blue Green Algae Sensor

Multi Parameter Water Quality Sensor

Water Level Gauge

Radar Water Level Sensor

Portable Water Quality Analyzer

Water Quality Monitoring Equipment

Aquaculture Monitoring System

River Monitoring System

Wastewater Monitoring System

products details

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

PH Sensor

ORP Sensor

COD Sensor

Water Turbidity Sensor

Conductivity Water Sensor

Dissolved Oxygen Sensor

Suspended Solids Sensor

Residual Chlorine Sensor

Ammonia Nitrogen Sensor

Chlorophyll A Sensor

Oil In Water Sensor

Blue Green Algae Sensor

Multi Parameter Water Quality Sensor

Water Level Gauge

Radar Water Level Sensor

Portable Water Quality Analyzer

Water Quality Monitoring Equipment

Aquaculture Monitoring System

River Monitoring System

Wastewater Monitoring System

PH Sensor

ORP Sensor

COD Sensor

Water Turbidity Sensor

Conductivity Water Sensor

Dissolved Oxygen Sensor

Suspended Solids Sensor

Residual Chlorine Sensor

Ammonia Nitrogen Sensor

Chlorophyll A Sensor

Oil In Water Sensor

Blue Green Algae Sensor

Multi Parameter Water Quality Sensor

Water Level Gauge

Radar Water Level Sensor

Portable Water Quality Analyzer

Water Quality Monitoring Equipment

Aquaculture Monitoring System