Table 4 calibration option settings, Change calibration options – Hach-Lange HQD - Conductivity probe CDC User Manual
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6.
If prompted, enter a name for the new method settings. Additional changes made to
the settings of an existing method are automatically saved with the same method
name.
7.
Push
EXIT
until the meter returns to the measurement mode.
Change calibration options
1.
Make sure a probe is connected to the meter.
2.
Push the
METER OPTIONS
key and select (CDC401) Settings.
3.
Select Modify Current Settings.
4.
Select Calibration Options.
5.
Correction factor
% per °C (default: 1.90%
per °C)
When the temperature correction is set to linear, enter a
correction factor based on the sample type. The correction
factor may need to be determined experimentally. For
example, the factor for ultrapure water vs. a NaCl salt solution
is 4.55% vs. 2.125% per °C.
Reference temperature
20 °C
25 °C (default)
When the parameter is set to conductivity, TDS or resistivity,
the reference temperature for temperature correction can be
changed.
TDS form
NaCl (default, factor 0.5)
Custom
When the parameter is set to TDS, the conversion factor from
conductivity to total dissolved solids can be based on a NaCl
solution or on a different solution. To change the factor, select
Custom and enter the conversion factor and temperature
correction information.
Note: Labels and options may vary depending on units selected.
Table 3 Measurement option settings (continued)
Setting
Options
Description
Table 4 Calibration option settings
Settings
Options
Description
Standard
1 D KCl, 111.3 mS/cm, 25
o
C
0.1 D KCl, 12.85 mS/cm, 25
o
C
0.01 D KCl, 1408 µS/cm, 25
o
C
0.1 M KCl, 12.88 mS/cm, 25
o
C
0.01 M KCl, 1413 µS/cm, 25
o
C
0.001 M KCl, 146.93 µS/cm, 25
o
C
NaCl, 18 mS/cm, 25
o
C
NaCl, 1000 µS/cm, 25
o
C
NaCl, 25 µS/cm, 25
o
C
NaCl, 0.05%, 1015 µS/cm, 25
o
C
Seawater (S=35)
Custom
Options for conductivity calibration
standards