ISO9001:2015 quality certified


KWS400 online Optical Fiber Chlorophyll Sensor


KWS-400 Optical Fiber Chlorophyll Sensor


Kacise fiber optic chlorophyll sensor measures the concentration of chlorophyll A in the water by using fluorescence principle. According to spectral absorption characteristic of chlorophyll A, the water body is illuminated by a high-energy LED light, chlorophyll A in water body is stimulated to produce fluorescence of specific wavelength. The sensor adopts fiber optic structure, which has excellent repeatability and stability. It is not affected by ambient light. With automatic cleaning brush, it can eliminate bubbles, reduce the impact of contamination on measurement. The sensor has the longer maintenance cycle.  It has excellent stability after long-term online use.


  • Digital sensor, RS-485 output, support MODBUS.
  • With automatic cleaning brush, prevent contamination, eliminate bubbles.
  • Direct measurement is more convenient than traditional analysis method
  • On-line continuous monitoring, real-time control water quality dynamics

Technical Specifications

Item Fiber Chlorophyll Sensor Self-Cleaning Chlorophyll Sensor
Model KWS-400A KWS-400B


KWS400-online chlorophylls sensor with brush
KWS400-online chlorophylls sensor with brush
Principle fluorescence principle
Measuring Range 0~400ug/L or 0~100RFU
Resolution 0.1 µg/L or 0.1% RFU
Linearity R2>0.99
Protection Rate IP68
Deepest Depth Underwater 60 meters Underwater 10 meters
Temperature Range 0 ~ 50℃
Output Support RS-485, MODBUS protocol
Power Supply DC 5~12V, current <50mA DC 5~12V, current <50mA (not clean)
Installation Input type, circulation type Input type
Size Φ22mm*120mm Φ33mm*156mm
Cable Length 10 m, customizable 5 m, 15 m and 30 m cable
Self-Cleaning System NO Yes
Optical Window POM
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