Hach-Lange PHC10130 User Manual - Manual (Page 7)

Option Description
Measurement
Limits Sets the measurement limits—Lower limit (default: 0.01 μS/cm; 0 ‰) or
Upper limit (default: 400000.00 μS/cm; 42 ‰).
The measurement limits can be set to match the acceptable values for
the sample. When the measurement is above the upper limit setting or
below the lower limit setting, the meter shows an "Out of limits" message.
This message is an alert to a potential problem with the process
conditions.
Temperature
Correction Sets the temperature correction—None, Linear, NaCl non-linear (default)
or Natural Water.
The conductivity of a sample changes when the temperature changes.
Temperature correction shows the conductivity at the user-selected
reference temperature. Temperature correction can be changed or turned
off when the parameter is set to conductivity, TDS or resistivity.
Correction
Factor When the temperature correction is set to linear, this sets a correction
factor based on the sample type—% per °C (default: 1.90% per °C).
The correction factor may need to be identified experimentally. For
example, the factor for ultrapure water is 4.55% per °C and the factor for
NaCl salt solution 2.125% per °C.
Reference
Temperature When the parameter is set to conductivity, TDS or resistivity, sets the
reference temperature for temperature correction—20 °C or 25 °C
(default).
TDS Form When the parameter is set to TDS, sets the conversion factor from
conductivity to total dissolved solids—NaCl (default, factor 0.5) or
Custom.
To change the factor, select Custom and enter the conversion factor and
temperature correction information.
Note: Labels and options may vary depending on the units selected.
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 and select CDC401 Settings.
3. Select Modify Current Settings.
4. Select Calibration Options and update the settings:
Option Description
Standard Sets the conductivity calibration standard—
• 1 D KCl, 111.3 mS/cm, 25 °C
• 0.1 D KCl, 12.85 mS/cm, 25 °C
• 0.01 D KCl, 1408 μS/cm, 25 °C
• 0.1 M KCl, 12.88 mS/cm, 25 °C
• 0.01 M KCl, 1413 μS/cm, 25 °C
• 0.001 M KCl, 146.93 μS/cm, 25 °C
• NaCl, 18 mS/cm, 25 °C
• NaCl, 1000 μS/cm, 25 °C
• NaCl, 25 μS/cm, 25 °C
• NaCl, 0.05%, 1015 μS/cm, 25 °C
• Seawater (S=35)
• Custom
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