Xylem wtw MIQ/IDS, Руководство по эксплуатации

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MIQ/IDS pH
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ba77277d01 01/2024
4.2.6 Calibration result
Calibration evalua
-
tion
After calibrating, the calibration data and current state of the sensor are evalu-
ated automatically. The asymmetry and slope are evaluated separately. The val-
ues must be within the following ranges:
Slope: - 50 ... -62 mV/pH
Asymmetry: -45 ... +45 mV
If one of the two values is outside the specified range the calibration is evaluated
as not successful, i.e. the sensor could not be calibrated.
A calibration procedure can have the following results:
Possible calibration
results
4.2.7 Calibration history
The calibration history contains the data of the active calibration and the chrono
-
logical list with the last calibrations.
* Enter the pH value of the buf
-
fer solution.
Enter the nominal pH value of the buffer
solution according to the displayed tempera
-
ture with
<

>
and confirm with
<OK>
.
Successfully calibrated.
End of the CAL_CON_1P cali
-
bration.
The values determined for
Slope
and
Asym
-
metry potential
are displayed.
Calibration is finished. Confirm with
<OK>
.
The display returns to the measured value
display.
Display Explanation
Display after calibrating Log book entries
(meaning/actions)
Measured value display Sensor was successfully calibrated.
Calibration data see calibration history.
"----" Sensor could not be calibrated.
Sensor blocked for measurement.
– Carry out maintenance activities immediately
(see operating manual).
– View the calibration history.
– Check the calibration conditions and calibration
standard.
Information on the contents and structure of the log book, and how
to call it up, is given in the Log book chapter of the IQ S
ENSOR
N
ET
system operating manual.