CHLO-206A Digital Chlorophyll Sensor

The CHLO-206A excites algal pigments and measures the emitted fluorescence. A configured relationship reports a chlorophyll-a estimate; the fluorescence signal is not itself a direct count of algal cells or a laboratory extraction result.

The listed optical compensation and ambient-light suppression functions concern instrument response. Confirm the supplied implementation; these functions do not remove every effect of species composition, particle interference, temperature or light-induced fluorescence quenching.

Calibrate and interpret the fluorescence result

• Use the reference medium, zero/span procedure and acceptance criteria supplied for the CHLO-206A. A dye check can assess response or drift, but it does not alone establish the relationship to every natural algal community.
• Collect representative water samples at the sensor location for an appropriate laboratory chlorophyll-a analysis. Use paired results to check the concentration relationship across the intended conditions.
• Record time, depth, light conditions and temperature. Strong-light physiological quenching or a change in species can alter fluorescence without a matching change in pigment concentration.
• Inspect and clean the optical surface as directed. Verify after cleaning or service and set a site maintenance schedule; online operation does not mean maintenance-free operation.

The listed 0–400 µg/L range and other values remain configuration references. Confirm the concentration basis and accuracy conditions for the ordered sensor. The IP68/depth description requires the supplied installation and connector conditions; a temperature sensor is not universal compensation for all optical effects.

Technical parameter

• 0-400ug/L
• Resolution: 0.1ug/L
• 0-50 °C; IP68 protection, water depth within 20 meters
• Built-in temperature sensor
• Support RS-485, Modbus/RTU protocol
• Convenient, fast, stable and easy to maintain