Integrated Multi-parameter Sensor Operation manual
15
Blue-green algae Sensor Specification
Principle
Fluorescence method
Range
200-300000 cells/mL
Resolution
20 cells/mL
Accuracy
The signal level of 1ppb rhodamine WT dye corresponds
to ±10% of the value
（
At the same temperature
）
2.10 Ammonia Nitrogen Sensor
The NH4 ion selective electrode is a grid film electrode
，
the material of which mainly uses a special
organic ion exchange membrane that dissolves in the organic solution and penetrates with the PVC mesh.
The fields it is widely used include: drinking water, fertilizer, and refrigerant. To use the electrode
requires the reference electrode, it has good repeatability and faster response time, but its accuracy is no
better than the colorimetric method. The outer appearance of the ammonia nitrogen sensor is shown in
Figure 12.
Figure 12 Ammonia Nitrogen Sensor
Technical Specification of Ammonia Nitrogen Sensor
Principle
Ion Selective Electrode Method
Range
0.1~100mg/L
Resolution
0.01mg/L-N
Accuracy
±10 % of the measured value or ± 2 mg/L, (the electrode is greatly
affected by temperature, field comparison is the best field calibration,
otherwise it may be out of range)
Important Tip: Ammonia nitrogen must be set to no compensation if potassium ions are not