Integrated Multi-parameter Sensor Operation manual
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Figure 10 Chlorophyll sensor
Chlorophyll sensor Specification
Principle
Fluorescence method
Range
0-500 μg/L
Resolution
0.1 μg/L
Accuracy
The signal level of 1ppb rhodamine WT dye corresponds
to ±10% of the value
（
At the same temperature
）
2.9 Blue-green Algae Sensor
Principle:
Blue-green algae, also known as cyanobacteria, is a widely distributed prokaryotic microorganism that is
closely related to the environmental quality of water bodies. When the water body grows vigorously, it
will cause discoloration and odor.
The blue-green algae sensor utilizes the characteristic that the cyanobacteria has an absorption peak and
an emission peak in the spectrum, and a monochromatic light emitting a specific wavelength is irradiated
into the water, and the cyanobacteria in the water absorbs the energy of the monochromatic light,
releasing a single wavelength single. The color of light, the light intensity emitted by blue-green algae is
proportional to the content of cyanobacteria in the water. The appearance of the blue-green algae sensor is
shown in Figure 11.
Figure 11 Blue-green algae Sensor