kajaaniMCA
i
– Installation, Operating & Service - 12.9 - W4610201 V2.5 EN
MCAi: MCAI-000
Select:
1
2
Show Values
Edit Values
ABORT
ENTER
Fig. 12.13. Changing the chemicals compensation.
Fig. 12.14. Measured values of a sample.
MCAi: MCAI-000
Measurements
Cal in Use
Lab Cons
Conduct
MCA Cons
Temp
Mlevel
ABORT
1 dd-mm-yy
3.2 %Cs
1.2 mS/cm
3.1 %Cs
55.2 degC
58.7 u
OK
MCAi: MCAI-000
Compensation Values
MCA-Lab
Chem Comp
Tot Comp
ABORT OK
-0.10 %Cs
0.00 %Cs
0.10 %Cs
Fig. 12.15. Correction of chemical compensation.
• Changing the compensation
Chemicals compensation can be changed by either
changing the values of existing calibration points, or by
determining new calibration samples as instructed above.
When taking new calibration samples, remember that
the MCAi treats the calibration samples as a sample pair
– the compensation will not change before values are
determined for BOTH samples!
Existing calibration points can be edited as follows:
The calibration samples are stored in tables C
AL IN USE
1 and CAL IN USE 2 (Fig. 12.13).
To view data on the existing calibration points, use
function S
HOW VALUES and the measured values will
appear on the screen (Fig. 12.14).
Press OK to view the correction values calculated by
the MCAi (Fig. 12.15).
where
• MCA – Lab = consistency error of MCA.
• Chem comp = chemicals compensation value (%).
• Total comp = total compensation calculated from
the above values.
Press ABORT to exit.
Press E
DIT VALUES to change the values of the
calibration samples. The MCAi will then ask for the
calibration point data, in the same way as in the menu
L
ATEST SAMPLE. Only change the laboratory consisten-
cy so that the difference between MCAi and Laboratory
at that signal level is correct, and press OK to accept the
other values.
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