KNF-600PRO Online Deep-Water Multi-Parameter Sensor 200m 20 Bar Titanium RS485 MODBUS IP68
KNF-600PRO Online Deep-Water Multi-Parameter Water Quality Sensor
The Kainafu KNF-600PRO is a purpose-built online deep-water multi-parameter sensor engineered for deep lakes, marine monitoring, underground wells and harsh wastewater. It features a robust pressure-resistant structure and self-developed titanium alloy watertight connectors, withstanding water pressure up to 20 bar (200 m depth) for stable long-term operation.
Built for Deep Water & Wells
- 0-200 m measurement depth — downhole, well and marine ready.
- 20 bar pressure resistance — deep-water aviation connector with titanium alloy plug.
- Integrated titanium alloy body — corrosion-resistant, high-strength, high-temperature and impact resistant for up to 200 m underwater.
- 6 standardized sensor interfaces + 1 central cleaning brush — freely combine dissolved oxygen, pH/ORP, conductivity (salinity), turbidity, chlorophyll, cyanobacteria and oil-in-water probes.
- Automatic cleaning device — cleans at set intervals to remove bubbles and biofouling, ideal for long-term unmanned deep-water monitoring.
- RS-485 output, MODBUS protocol — easy integration with data acquisition platforms and automatic water quality monitoring stations.
- Field-replaceable, on-site calibration — every calibration parameter is stored inside its independent probe.
- IP68 protection with 30 m default waterproof cable (customizable).
Technical Specifications
| Model Number | Kainafu KNF-600PRO |
|---|---|
| Measurement Depth | 0-200 m |
| Pressure Resistance | Up to 20 bar |
| Interface | 6 probe interfaces + 1 central cleaning brush interface |
| Size | 84 mm × 544.4 mm |
| Weight | 3.25 kg (main unit + 6 sensors) |
| Operating Temperature | -5 to 50 °C |
| Output | RS-485, MODBUS protocol |
| Cleaning | Automatic brush, default every 30 minutes (interval settable) |
| Power Supply | DC 12-24 V, ≥1 A |
| Power Consumption | 0.8 W (brush off) / 2 W (brush rotating) |
| Protection Level | IP68 |
| Material | PVC, titanium alloy, anti-stain copper |
| Cable Length | 30 m default (customizable), waterproof connectors |
Install sensors
|
Parameters |
Measurement principle |
range |
Precision |
Resolution |
Material |
waterdepth |
|
Dissolved oxygen |
Fluorescence method |
0-20 mg/L or 0-200% Saturation |
±1% or ±0.3 mg/L, take the larger value |
0.01mg/L |
Titanium alloy |
200m |
|
Turbidity |
90° scattered light |
0 - 1000 NTU (can be set to 0 - 4000 NTU) |
±5% or 0.3 NTU, whichever is greater |
0.01NTU |
Titanium alloy |
200m |
|
Conductivity (Salinity) |
Four-electrode |
Conductivity:0-200mS/cm Salinity: 0 - 175 ppt TDS: 0 - 128,000 mg/L |
±1% or 0.01 mS/cm, take the larger value ±1ppt/ |
0.01mS/cm |
Titanium alloy + PEEK |
200m |
|
Oil in water |
Ultraviolet fluorescence method |
0 - 50 ppm (can be set to 0 - 150 ppm) |
Linearity: R² > 0.999 |
0.01ppm |
Titanium alloy |
200m |
|
pH |
Glass electrode method |
0-14 pH |
±0.02 pH |
0.01 |
POM + Titanium Alloy |
100m |
|
ORP |
Platinum electrode method |
-1999~1999mV |
±20mV |
1mV |
POM + Titanium Alloy |
100m |
|
Chlorophyll |
Fluorescence method |
0-500 μg/L |
±5% or 0.5 μg/L, take the larger value |
0.01μg/L |
Titanium alloy |
200m |
|
Ammonia nitrogen |
Fluorescence method |
0 - 30 million cells/mL (can be set at 0 - 2 million) |
Linearity: R² > 0.999 |
1cells/mL |
Titanium alloy |
200m |
|
Depth |
Pitot-type |
0m-2m.200m H2O |
<0.1%F.S. |
0.01m |
Titanium alloy |
200m |
Applications
Deep lakes, marine and ocean monitoring, underground wells and drilling, deep-water aquaculture, and harsh wastewater environments requiring long-term unmanned online monitoring.
Contact us for deep-water configurations, probe combinations, OEM options and bulk pricing.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.