AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
51
2-electrode conductivity – dual input calculated values setup
Menu Comment Default
Calculation Type Calculations are performed using the inputs from both sensors.
Select the required calculation from the following options:
No Calculation
Inferred pH (NaOH)
conductivity readings.
Note: The temperature compensation characteristic TC Curve for signal B should be set to NaOH.
Inferred pH (NaOH+NaCl)
conductivity readings.
Note: The temperature compensation characteristic TC Curve for signal A should be set to NaCl.
Note: The temperature compensation characteristic TC Curve for signal B should be set to NaOH.
Inferred pH (NH3)
conductivity readings.
Note: The temperature compensation characteristic TC Curve for signal B should be set to .
Inferred pH (NH3+NaCl)
conductivity readings.
Note: The temperature compensation characteristic TC Curve for signal A should be set to NaCl.
Note: The temperature compensation characteristic TC Curve for signal B should be set to .
Difference
Calculates the difference between the two conductivity inputs:
Ratio
Calculates the ratio of the two conductivity inputs:
% Passage
Calculates the amount of conductivity as a percentage that passes through the cation exchange unit:
x 1
% Rejection
Calculates the amount of conductivity as a percentage that is absorbed in the cation exchange unit:
B
x 1
1
(
Note.
Before Cation Limit Set the required before-cation conductivity limit, between:
•
•
•
•
N/A
After Cation Limit Set the required before-cation conductivity limit, between:
•
•
•
•
N/A
pH Range View the measuring range for the selected Inferred pH calculation
•
•
•
•
N/A
Signal Arrangement Set the signal arrangement:
•
Note: For inferred pH:
• After cation column.
• Before cation column.
N/A
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