- +86 571 8501 2111
- fpi-online@fpi-inc.com
- 459 Qianmo Road, Binjiang District, Hangzhou, China
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The Chlorophyll-a Online Sensor adopts fluorescence detection technology combined with digital intelligent design. It features built-in temperature compensation and supports calibration, data logging, analysis, and diagnostics. The sensor is equipped with an RS485 interface and communicates via the standard Modbus protocol.
When a beam of light is directed into a liquid containing chlorophyll, the chlorophyll absorbs blue-violet and red light and emits fluorescence in the red wavelength range. The intensity of the fluorescence is directly proportional to the concentration of chlorophyll.
| Product model | CHL-200 | CHL-210 |
| Working principle | Fluorescence method | Fluorescence method |
| Measurement range | Chlorophyll A: (0-50/500)ug/L Other ranges can be customized; Temperature: (0~50)°C | Chlorophyll A: (0-50/500)ug/L Other ranges can be customized; Temperature: (0~50)°C |
| repeatability | ≤1% | ≤1% |
| Measurement accuracy | ≤5% | ≤5% |
| Zero Drift (24h) | ±1%F.S. | ±1%F.S. |
| Range drift (24h) | ±3%F.S. | ±3%F.S. |
| Detection limit | 0.1ug | 0.1ug |
| resolution | 0.01ug/L | 0.01ug/L |
| Protection level | IP68 | IP68 |
| Communication interface | RS485, the standard Modbus protocol baud rate 9600 address bit default 50 | RS485, the standard Modbus protocol baud rate 9600 address bit default 50 |
| Dimensions: | (φ33*178)mm, cable 10 meters (can be customized) | (φ16*146)mm, cable 10 meters (can be customized) |
| Material | 316L stainless steel/PVC/titanium alloy optional | 316L stainless steel/titanium alloy optional |
| weight | 0.5kg | 0.1kg |
| Mounting threads | Upper end NPT3/4 thread | The upper end is M16*1, and the upper end is M20*1.5 thread |
| Operating voltage | （9~36）V DC | （9~36）V DC |
| MTBF | ≥ 1440h/time | ≥ 1440h/time |
| Energy consumption | 1 W (motor brush turning) 0.4W (motor brush not working) | 0.4W |
| Cleaning method: | Comes with a mechanical brush | not |
| Calibration period | 3~6 months | 3~6 months |
| Work environment | （0~50）℃ | （0~50）℃ |
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