Integrated Multi-parameter Sensor Operation manual
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Figure 8 Turbidity Sensor
Turbidity Sensor Specification
Principle
Light scattering
Range
0-1000 NTU
Resolution
0.1 NTU
Accuracy
±5% or ±0.3NTU
，
take the greater value
2.7 Depth Sensor
Principle:
The depth sensor uses a pressure sensitive method to measure the depth of the water. One side of the
sensor faces the other side of the water facing the vacuum to measure the pressure. The depth is then
calculated by subtracting the atmospheric pressure from the pressure applied by the water body.
The
distance from the depth sensor to the liquid surface is the measurement distance.
Reasons that affect depth measurements include atmospheric pressure, water density, and temperature.
Due to differences in atmospheric pressure at different times and in different regions, the software uses
atmospheric pressure at the time of calibration, which may result in small errors. Therefore, depth sensor
calibration is required before use (see 6.1.7 Depth Sensor Calibration). Frequent calibration can reduce
the error. The appearance of the depth sensor is shown in Figure 9.