Campbell Scientific OBS-5+ Sediment Concentration Monitor and Pressure Sensor User Manual
Page 12
OBS-5+ System
FIGURE 4-3. Sample calibration curves (fine and bold lines), lookup
tables I, II, and III (bold curves), and sediment concentrations pf ND
(open arrow) and FD (solid arrow) peaks.
The concentrations associated with the ND and FD peaks depend on sediment
characteristics as shown by the variety of response curves and the colored
arrowheads on FIGURE 4-4. Other sediment characteristics being equal, such
as shape and NIR reflectivity (see Section 10, Interfering Factors), larger
particles produce higher peak concentrations and greater OBS-5+ measurement
ranges than smaller particles.
4
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