Campbell-scientific OBS500 Smart Turbidity Meter with ClearSensor Tech Bedienungsanleitung PDF herunterladen (Seite 33)

OBS500 Smart Turbidity Meter with ClearSensor™ Technology

universal response curve. However, there is residual nonlinearity that is

removed by calibration and by computation of a TU value with a 2nd-order

polynomial. This section explains how to do a turbidity calibration.

0 1000 2000 3000 4000

Tur bidity (TU)

0.0

0.2

0.4

0.6

0.8

1.0

Normalized OBS-3+ Response (OPV330 VCSEL)

FIGURE 7-5. Normalized response of OBS500 to AMCO Clear

turbidity. The inset shows the response function of a turbidity

sensor to high-sediment concentrations.

AMCO Clear

SDVB turbidity standards are used to calibrate an OBS500

sensor. SDVB standards are made for individual instruments. Standards made

for one model of turbidity meter cannot be used to calibrate a different model.

0 20000 40000 60000

SSC (mg/l)

1000

2000

3000

4000

Turbidity (NTU)

B C

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 63 64

Keine Kommentare

Campbell-scientific OBS500 Smart Turbidity Meter with ClearSensor Tech Bedienungsanleitung Seite 33