Single and Dual Input Analyzers for Low Level Conductivity
AX410, AX411, AX413, AX416, AX418, AX450, AX455 & AX456
5 PROGRAMMING
28
IM/AX4CO Issue 11
Signal Calculation
(dual input analyzers only)
Notes.
•
•
•
If the units selected for
A: Cond Units
and
B: Cond Units
are not identical (page 22), no
calculations are performed and
No Calculation
and
Dissimilar
Units are displayed
alternately on the lower display line.
For correct inferred pH calculation, Sensor A
must
be installed
before
the cation column
and Sensor B
after
.
Refer to Appendix A.3 for further information on inferred pH.
Calculations are performed using the inputs from both sensors. Select the required calculation
from the following options:
Inf.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.
Inf.pH(NaOH)
is available only if:
A: Cond Units
and
B: Cond Units
are set to
uS/cm
and
A: T.Comp Range
and
B: T.Comp Range
are set to
Lo TC
and
A: Temp. Comp.
is set to
NaOH
and
B: Temp. Comp
is set to
Acid
(pages 24 and 25).
Inf.pH(NH3+NaCl)
Inf.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.
Inf.pH(NH3+NaCl)
and
Inf.pH(NH3)
are available only if:
A: Cond Units
and
B: Cond Units
are set to
uS/cm
and
A: T.Comp Range
and
B: T.Comp Range
are set to
Lo TC
and
A: Temp. Comp.
is set to
NH3
and
B: Temp. Comp
is set to
Acid
Ratio A/B
Difference A-B
% Passage
% Rejection
No Calculation
-
-
-
-
-
Calculates the ratio of the two conductivity inputs.
Calculates the difference between the two conductivity
inputs.
Calculates the amount of conductivity as a percentage that
passes through the cation exchange unit.
Calculates the amount of conductivity as a percentage that
is absorbed in the cation exchange unit.
No calculation is performed and the conductivity readings
are displayed directly.
Continued on next page.
Calc.
-----
Signal
Inf.pH(NaOH)
Inf.pH(NH3+NaCl)
Inf.pH(NH3)
Ratio A/B
Difference A–B
% Passage
% Rejection
No Calculation
After Cat. Limit