20
Operation
Setup Turbidity
→
Setup
→
Turbidity
TSS Coefficients
: Total Suspended Solids (TSS) can be measured if
correlation coefficients are calculated in KorDSS.
To obtain these coefficients, collect turbidity data at the sampling site with
corresponding grab samples. Analyze the samples in a lab to determine
a true TSS measurement (mg/L). At least 2 and up to 6 value pairs of
turbidity and TSS measurements can be used.
Correlation data must be collected for each unique sampling site, as this
correlation is site-specific.
In KorDSS Software, enter the field-obtained turbidity measurements and
the corresponding lab-obtained TSS measurements in the Instrument and
Sensors menu. Coefficients can then calculated with KorDSS and sent to
the sensor.
NOTE:
Although correlation coefficients can be entered directly
into the handheld (
Figure 25
), only KorDSS Software can
calculate the coefficients.
Figure 25
TSS coefficients
Setup pH
→
Setup
→
pH
Select USA auto-buffer recognition (4.00, 7.00, and 10.00) or NIST auto-
buffer recognition (4.01, 6.86, and 9.18) (
Figure 26
). Calibration values are
automatically compensated for temperature for both buffer sets.
Setup Conductivity
→
Setup
→
Conductivity
Temp Ref
: Reference temperature is used to calculate temperature
compensated specific conductance. All specific conductance values are
compensated to the Temp Ref temperature. The default value is 25°C
(
Figure 27
). Enter a new value between 15.00°C and 25.00
°
C.
%/°C
(Percent per degree Celsius): The temperature coefficient is used to
calculate temperature compensated specific conductance. The default is
1.91% based on KCl standards. Enter a new value between 0 and 4%.
TDS Constant
: This is a multiplier used to calculate an estimated Total
Dissolved Solids (TDS) value from conductivity. The multiplier is used to
convert specific conductance in mS/cm to TDS in g/L. The default value is
0.65. Enter a new value between 0 and 0.99.
Figure 26
Setup pH
Figure 27
Setup Conductivity
