Xylem EXO Series User Manual page 26

While all turbidity sensors will read consistently in formazin, other calibration solutions and field readings
will vary between different models of turbidity sensors. These differences are thought to be a result of differing
optical components and geometries and the resulting detection of varying suspended sediment characteristics.
This effect is inherent in the nature of every turbidity sensor, and as a result readings between different model
turbidity sensors are likely to show different field values even after 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.
|
26
pg