pg | 26
While all turbidity sensors will read consistently in formazin, other calibration solutions and eld readings
will vary between dierent models of turbidity sensors. ese dierences are thought to be a result of diering
optical components and geometries and the resulting detection of varying suspended sediment characteristics.
is eect is inherent in the nature of every turbidity sensor, and as a result readings between dierent model
turbidity sensors are likely to show dierent eld values even aer calibration in the same standards.
For long-term, in situ continuous monitoring of turbidity, the EXO2 sonde has a wiper to clean the turbidity
sensor to avoid sensor fouling and maintain accuracy.
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