Model: CD-36D 3.3 Introduction of Sample Water
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[Conditions of Sample Water]
• pH··································6.5 to 7.5pH
• Electrical conductivity····Equal to or higher than 8 mS/m
• Temperature ···················0 to 40°C (without freezing)
• Pressure ························· 0.01to 0.15MPa
• Consumption··················50 to 200mL/min
• Flow Rate·······················ca. 100mL/min (Roughly speaking, a flow rate of about half of a glass
in a minute)
• Setting Range·················50 to 200mL/min,
If a conductivity modifying column is adopted as option ⋅⋅⋅⋅⋅ 50 to
70mL/min “9. Option”
【IMPORTANT】 • Maintain the electrical conductivity of the sample water constant since the
up or down of the electrical conductivity affects the indication.
• Set the flow rate of the sample water to ca. 100mL/min and maintain it
constant since the up or down of the flow rate also affects the indication.
[If a conductivity modifying column is adopted as option]
• If a conductivity modifying column (Model: CLZ-2) is adopted as option, confirm that the lid of
the container of the column is closed tight before starting introduction of the sample water.
Upon introducing the sample water, gradually loosen the lid of the container and the sample level
begins to rise in the container. Then, wait until the sample level in the container reaches ca. 20%
from its bottom.
When the level reaches ca. 20% in the container, close the lid tight.
【IMPORTANT】 • If the sample is introduced when the lid is loose, the container will be
completely filled with sample. Make sure to close the lid tight at the
sample level of ca. 20%.
If it is found that the level has risen over ca. 20%, close the sample flow
regulating valve first, and loosen the lid. Then, when the level decreases
to ca. 20%, close the lid tight and open the sample flow regulating valve.
• If the Transmitter is left without sample flow for a long period, the sodium
chloride solution flowing out of the container may be dried up on the
surface of the filter and the filter may be clogged with dried sodium
chloride. Therefore, always keep the sample flowing. When the operation
is to be resumed after a long-term shutdown, start the measurement after
confirming that the crystal of sodium chloride on the filter has completely
been dissolved with the sample water.
③ Adjust the flow rate. ⋅⋅⋅⋅⋅⋅ Adjust the sample flow rate with the sample flow regulating valve
provided in the sample line so that a small amount of the sample water overflows in the flow cell.
④ Check for any leak. ⋅⋅⋅⋅⋅⋅ Check the entire unit of the sensor to see if there is any leak of the
sample water.
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