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AW T4 20 |
U N I V ER S A L 4 - W I R E , D UA L- I N P U T T R A N SM I T T ER | C I/AW T4 2 0 - EN R E V. B
…10
Sensor setup
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)/Inferred pH (NaOH+NaCl)/Inferred pH (NH3)/
Inferred pH (NH3+NaCl)/Difference/Ratio/% Passage/% Rejection
No Calculation
Inferred pH (NaOH)
Calculates a pH value in the range 7.00 to 11.00 pH based on the type of chemical dosing and the
conductivity readings.
Note:
The temperature compensation characteristic
TC Curve
for
signal B should be set to
NaOH
.
Inferred pH (NaOH+NaCl)
Calculates a pH value in the range 7.00 to 11.00 pH based on the type of chemical dosing and the
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)
Calculates a pH value in the range 7.00 to 10.00 pH based on the type of chemical dosing and the
conductivity readings.
Note:
The temperature compensation characteristic
TC Curve
for
signal B should be set to
NH3
.
Inferred pH (NH3+NaCl)
Calculates a pH value in the range 7.00 to 10.00 pH based on the type of chemical dosing and the
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
NH3
.
Difference
Calculates the difference between the two conductivity inputs:
Difference = B — A
Ratio
Calculates the ratio of the two conductivity inputs:
Ratio =
B
A
% Passage
Calculates the amount of conductivity as a percentage that passes through the cation exchange unit:
%Passage =
A
B x 100
% Rejection
Calculates the amount of conductivity as a percentage that is absorbed in the cation exchange unit:
%Rejection =
A
B x 100
1
(
(
Note .
The following menus are displayed only if Calculation Type = Inferred pH.
Before Cation Limit
Set the required before-cation conductivity limit, between:
•
0.000 and 100.0 μS/cm
Inferred pH (NaOH)
•
0.000 and 100.0 μS/cm
Inferred pH (NaOH+NaCl)
•
0.000 and 25.00 μS/cm
Inferred pH (NH3)
•
0.000 and 25.00 μS/cm
Inferred pH (NH3+NaCl)
N/A
After Cation Limit
Set the required before-cation conductivity limit, between:
•
1.000 and 100.0 μS/cm
Inferred pH (NaOH)
•
1.000 and 250.0 μS/cm
Inferred pH (NaOH+NaCl)
•
0.060 and 10.00 μS/cm
Inferred pH (NH3)
•
0.060 and 25.00 μS/cm
Inferred pH (NH3+NaCl)
N/A
pH Range
View the measuring range for the selected Inferred pH calculation
•
7.00 to 11.00 pH
Inferred pH (NaOH)
•
7.00 to 11.00 pH
Inferred pH (NaOH+NaCl)
•
7.00 to 10.00 pH
Inferred pH (NH3)
•
7.00 to 10.00 pH
Inferred pH (NH3+NaCl)
N/A
Signal Arrangement
Set the signal arrangement:
•
A = S1, B = S2/A = S2, B = S1
Note:
For inferred pH:
•
A = Conductivity measurement
A
fter cation column.
•
B = Conductivity measurement
B
efore cation column.
N/A
