YSI ProDSS - Manual (Page 25)

23
Operation
Figure 24 Sensor Setup
Figure 25 Setup ODO
Sensor Setup
→ Setup
The Sensor Setup menu will show all sensors installed on the bulkhead
(
Figure 24 ). If a sensor is installed on the bulkhead and is not listed on
the Sensor Setup menu (<None> displayed), check the sensor and cable
connections (
ProDSS sensor installation/removal on page 9 ).
Setup ODO
→ Setup → ODO
Local DO: Enable or disable localized DO% measurements. When
enabled, the calibration value is set to 100% regardless of altitude or
barometric pressure. When enabled, an L will be shown next to DO% on
the run screen. DO mg/L measurements are unaffected when Local DO is
enabled (
Figure 25 ).
LDS: Last Digit Supression (LDS) rounds the DO value to the nearest
tenth, e.g. 8.27 mg/L becomes 8.3 mg/L.
Sensor Cap Coefficients: The sensor cap coefficients must be updated
after sensor cap replacement. Update the sensor cap coefficients using
the KorDSS software and the coefficient sheet provided with the new
sensor cap.
Figure 26 TSS coefficients
Setup Turbidity
→ Setup → Turbidity
TSS Coefficients: The Total Suspended Solids (TSS) coefficients are
calculated in KorDSS by entering turbidity and TSS correlation data.
Measure turbidity and take a grab sample for laboratory analysis of TSS
to obtain a value pair for the correlation. At least two and up to six value
pairs can be entered into KorDSS.
The TSS coefficients can be entered manually or updated through the
KorDSS software (
Figure 26 ).
For highest accuracy, obtain 6 values pairs and calculate new coefficients
for each unique sampling site.